high voltage fuse technology - cable joints

For more information visit our website www.bussmann.com 1

High Voltage Fuse Technology

End cap Porcelain barrel

Fuse elements Granular Quartz Striker coil Expelled striker

Star core Moisture tight seal

GranularQuartz

Fuse elements

Porcelain barrel

Cross Section

Current Limiting

For the protection of equipment operating above 1000 volts AC

Silver ceramicpoint contact

Star coreStriker coil

Current l imit ing HV fuse l inks spl it into threeinternationally recognised types: back-up (or partialrange) fuse links, which will interrupt any currentfrom their rated breaking capacity down to a minimumbreaking current specified by the manufacturer; andgeneral purpose fuse links, which will interrupt allcurrents from rated breaking capacity down to acurrent that will melt the elements within one hour.A third type is the full range fuse. This term appliesto fuse links that can interrupt any current belowthe rated breaking capacity that melts the fuseelements satisfactorily.

Current limiting back-up fuse links are the closest inconstruction to LV cartridge types. However, a longer stripelement with many more restrictions is necessary toproduce the large number of series arcs needed tointerrupt a high voltage. Fuse manufacturers achievethis by coiling the element around a ceramic core with astar shaped cross section. In this way, a 1m long elementcan be fitted into a 250mm long fuse body. If the adjacentcoils are too close, there will be a flashover betweenthem and this sets a practical limit on how long anelement can be crammed into a particular cartridge, andhow many elements can be used in parallel.

Like an LV cartridge fuse link, an HV fuse link of thistype has a ceramic body.

Many HV current limiting fuse links are also fitted witha striker mechanism. This not only provides the userwith a visual indication that the fuse link has operated,but can also be used to operate other switchgear. Inthis way, a fuse on a single phase system can cut off allthree phases if a fault occurs.

Striker mechanisms are driven by explosive charges orcompressed springs. Both are triggered by a thin fusewire running the length of the fuse, usually through thecentre of the star shaped core. The wire is connected

in parallel with the elements, so a current flowsthrough it when the elements melt. The currentheats up the wire and detonates the explosivecharge, or melts the wire andreleases the spring,pushing the striker pin out of the fuse link’s endcap. A lock washer mechanism makes it impossibleto push the pin back into the fuse body.

There are several variations on this design for specificapplications. For example, the elements in three-phase motor protection fuse links are corrugated towithstand the cyclical mechanical stresses inducedby the high starting and stopping currents drawnby the motor.

Adam Rowe

LARGE POWER 3

2

High Voltage Fuse Technology

For more information visit our website www.bussmann.com

M- effect

Bussmann high voltage fuse links include M-effect as a design feature to enhance performance. M-effect

(named after its discoverer, Prof. Metcalf, in the late 1930s) consists of applying overlay spots of special low

melting alloy onto the fuse element strips. Its effect is to ensure that the fuse link runs cooler in service and

that the maximum temperature reached during fuse operation is kept down to a modest 160 deg. C

(compared with 300 - 400 deg C for fuse links which do not employ this feature).

M-effect has been in widespread use in both low voltage and high voltage fuse links of British design for

many years and is now coming into use in many other countries. Cooler running M-effect fuse links have

longer service life since lower surface temperature on the elements ensures against long term embrittlement

of the material. The M-effect spots are stable and have been proved by many tests to remain inert for

periods of 30 years or more.

The low maximum operating temperature of M-effect fuse links ensures safe operation of Back-up types in

striker tripped switchgear under low fault conditions. Whereas non M-effect types are known to have a risk

of body fracture because of their much higher body temperature under such conditions. The low maximum

operating temperature also ensures against damage to heat sensitive fuse enclosures such as cast resin

fuse pods.

In short, M-effect fuse links are safer, give better protection and are longer lasting than alternative designs

which do not employ this valuable feature.

Essentially, non-current limiting fuse links have shortelements and incorporate some means of lengtheningthe arc after the element melts, extinguishing the arcand preventing re-ignition. There are two distinct types:expulsion fuse links and liquid fuse links.Expulsion fuses are an effective way of protectingoverhead distribution lines and transformers. They aredesigned for outdoor use only and comprise a tin orcopper fuse element in series with a flexible braid in atube. The tube forms one side of a triangle, with alatched connection at the top and a hinge at thebottom. The braid emerges from one end of the fuselink and is held in tension by a spring.When the element melts, the braid is no longer undertension, the latch is released and the fuse swings

downwards under gravity, breaking the circuit. As thefuse swings downwards, the arc is lengthened,extinguished and prevented from restriking.Liquid fuse links are based on early non-currentlimiting fuse links which use liquids to quench the arc.The fuse element is anchored to the top ferrule of aglass tube filled with a quenching liquid - usually ahydrocarbon. The rest of the tube is filled with aspring that holds the element - or a strain wire in veryhigh voltage fuse links - in tension.When the element melts, the spring pulls the twoparts of the element apart, extending the arc andquenching it in the liquid.

Non- Current Limiting

For the protection of equipment operating above 1000 volts AC

3

DIN - Fuse Links

Fuse Links comply with DIN dimensional standard DIN43625.

‘F’ range, high performance full range fuse link.

‘S’ range, high performance back-up fuse link, with striker tripping.

‘A’ range, including high current rating back-up fuse link.

Comply with IEC 60282-1 and VDE 0670 part 4.

Wide variety of ratings, 3.6 kV to 36 kV.

Versions suitable for indoor and outdoor use.

Motor circuit fuse link option.

Bussmann DIN ‘S’ Fuse Links

The time current characteristics of the ‘S’ range is optimised to ensure improved discrimination with upstream devices and to give fast clearance of earth faults in the secondary terminal zones. The breaking performance with low over currents is adequate to cater for all normal distribution applications, where low voltage fuse links on the secondary side take care of low overload faults, leaving the high voltage fuse links to clear major faults ahead of LV protection. The fuse links are suitable for use even where there is no secondary LV protection, provided that they are used in fuse switches fitted with instantaneous striker tripping.

Bussmann DIN ‘F’ Fuse Links

The ‘F’ range fuse links have ‘full range’ clearing capability. Bussmann ‘F’ types are designed to clear all overloads right down to fuse’s rated current in accordance with latest IEC 282-1 requirements. They are thus suitable for use as a sole form of protection. ‘F’ range time current characteristics are especially advantageous for transformer protection applications.

Bussmann DIN ‘A’ Fuse Links

This earlier, well proven design, has values of minimum breaking current between the ‘S’ and ‘F’ range including higher current ratings.


4

DIN - Fuse Links

Part Number

CurrentRating

Length Diameter

ø

Un

kV

In

A

I1

kA mmm Ω W

A2s

mm

WeightBreakingCapacity

I3

A

MinimumBreaking Current

Cold resistance and watts loss in free air at rated current

JouleIntergral

(I2t)

7.2SDLSJ6.37.2SDLSJ107.2SDLSJ167.2SDLSJ207.2SDLSJ257.2SDLSJ31.57.2SDLSJ407.2SDLSJ507.2SDLSJ63

7.2SFLSJ807.2SFLSJ1007.2SFLSJ1257.2SFLSJ160

12SDLSJ6.312SDLSJ1012SDLSJ1612SDLSJ2012SDLSJ2512SDLSJ31.512SDLSJ4012SDLSJ5012SDLSJ63

12SFLSJ5012SFLSJ6312SFLSJ8012SFLSJ100

12SKLSJ12512SXLEJ16012SXLEJ200

15.5SFMSJ10015.5SKMSJ125

17.5SDLSJ6.317.5SDLSJ1017.5SDLSJ1617.5SDLSJ2017.5SDLSJ2517.5SDLSJ31.517.5SDLSJ40

17.5SFLSJ31.517.5SFLSJ4017.5SFLSJ50

17.5SDMSJ6.317.5SDMSJ1017.5SDMSJ1617.5SDMSJ2017.5SDMSJ2517.5SDMSJ31.517.5SDMSJ40

17.5SFMSJ5017.5SFMSJ6317.5SFMSJ80

24SDMSJ6.324SDMSJ1024SDMSJ1624SDMSJ2024SDMSJ2524SDMSJ31.524SDMSJ40

24SFMSJ4024SFMSJ5024SFMSJ6324SFMSJ7124SHMEJ8024SHMEJ10024SKMEJ12524SXMEJ160

36SDQSJ3.1536SDQSJ6.336SDQSJ1036SDQSJ1636SDQSJ2036SDQSJ25

36SFQSJ31.536SFQSJ4036SFQSJ5036SXQEJ63

7.27.27.27.27.27.27.27.27.2

7.27.27.27.2

121212121212121212

12121212

121212

15.515.5

17.517.517.517.517.517.517.5

17.517.517.5

17.517.517.517.517.517.517.5

17.517.517.5

24242424242424

2424242424242424

363636363636

36363636

6.310162025

31.5405063

80100125160

6.310162025

31.5405063

506380100

125160200

100125

6.310162025

31.540

31.54050

6.310162025

31.540

506380

6.310162025

31.540

4050637180100125160

3.156.310162025

31.5405063

404040404040404040

40404040

505050505050505050

50505050

506363

2525

35.535.535.535.535.535.535.5

35.535.535.5

35.535.535.535.535.535.535.5

353535

50505050505050

5050505063636363

2035.535.535.535.535.5

35.535.535.520

2031494980100114143180

264338375525

202835729090128196275

160227256446

870500610

707990

23195980100118148

118132225

16275780100100143

180240270

1928478084105140

119225306350300350420320

-23357098112

116178255280

20599.765.148.932.626.016.012.98.14

6.014.653.602.73

28514381.454.643.732.821.615.112.1

17.112.18.975.61

4.604.303.80

8.235.61

31318510469.255.441.431.1

30.321.917.3

50921511279.863.847.931.6

25.017.813.1

48928716579.362.046.534.0

38.027.121.617.720.518.016.714.0

-68440216511798.0

73.452.436.835.0

111923272836364645

54647997

141826283543495975

61698883

115200330

119126

15233438485876

375162

26283738526166

88102128

24356038495679

8596128134250350171279

-3444526285

96116133271

292292292292292292292292292

292292292292

292292292292292292292292292

292292292292

292292292

442442

292292292292292292292

292292292

442442442442442442442

442442442

442442442442442442442

442442442442442442442442

537537537537537537

537537537537

4.8X101

2.5X102

5.5X102

9.7X102

5.7X102

8.9X102

2.0X102

3.2X102

8.0X102

5.0X103

9.1X103

1.5X104

3.0X104

7.0X101

3.1X102

9.8X102

5.7X102

8.9X102

1.6X103

3.2X103

1.3X103

2.3X103

5.2X103

1.0X104

1.9X104

1.4X104

2.8X104

1.1X105

1.5X105

1.2X104

2.4X104

4.8X101

2.8X102

2.9X102

5.7X102

8.9X102

5.1X102

8.0X102

2.6X103

5.1X103

8.1X103

4.8X101

3.1X102

2.9X102

5.7X102

8.9X102

1.6X103

3.2X103

5.2X103

1.0X104

1.9X104

8.1X101

3.1X102

9.8X102

8.1X102

1.3X103

2.1X103

3.2X103

5.1X103

8.1X103

3.8X103

5.0X103

1.7X104

2.8X104

2.4X104

4.4X104

-1.0X102

3.1X102

4.6X102

8.9X102

1.2X103

2.1X103

4.1X103

8.3X103

1.1X104

6.5X102

2.7X103

8.2X103

1.1X104

8.0X103

1.0X104

2.2X104

3.2X104

7.5X104

6.5X104

1.1X105

1.7X105

3.1X105

6.5X102

2.7X103

8.6X103

5.1X103

8.1X104

1.5X104

2.7X104

3.2X104

5.7X104

4.1X104

8.8X104

1.5X105

2.2X105

2.3X105

5.0X105

6.5X105

1.4X105

2.2X105

6.1X102

4.0X103

2.0X103

4.4X103

6.6X103

1.1X104

1.8X104

1.9X104

3.8X104

6.0X104

6.0X102

3.8X103

1.2X104

6.7X103

1.1X104

2.0X104

3.6X104

5.5X104

1.2X105

1.9X105

1.3X103

5.5X103

1.5X104

1.1X104

2.0X104

2.9X104

4.4X104

6.9X104

9.0X104

5.0X104

6.6X104

8.4X104

9.3X104

8.7X104

1.7X105

-1.2X103

3.6X103

5.1X103

8.2X104

1.5X104

2.3X104

3.9X104

8.1X104

6.2X104

50.850.850.850.850.850.850.850.850.8

76.276.276.276.2

50.850.850.850.850.850.850.850.850.8

76.276.276.276.2

76.28888

76.276.2

50.850.850.850.850.850.850.8

76.276.276.2

50.850.850.850.850.850.850.8

76.276.276.2

50.850.850.850.850.850.850.8

76.276.276.276.264647888

50.850.850.850.850.850.8

76.276.276.288

1.631.631.631.631.631.631.631.631.63

3.13.13.13.1

1.631.631.631.631.631.631.631.631.63

3.13.13.13.1

3.13.73.7

4.54.5

1.631.631.631.631.631.631.63

3.13.13.1

2.22.22.22.22.22.22.2

4.54.54.5

2.22.22.22.22.22.22.2

4.54.54.54.53.13.13.74.2

2.92.92.92.92.92.9

6.06.06.06.5

VoltageRating

MaximumTotal Clearing

Minimum Pre-Arcing kg

Selection Tables

Table of ratings for ‘S’ range 7.2 - 36kV to DIN dimensions

Rat

ing

at 6

4%


5

DIN - Fuse Links

3.6ADOSJ6.33.6ADOSJ103.6ADOSJ163.6ADOSJ203.6ADOSJ253.6ADOSJ31.53.6ADOSJ40

3.6ADLSJ6.33.6ADLSJ103.6ADLSJ163.6ADLSJ203.6ADLSJ253.6ADLSJ31.53.6ADLSJ40

12AILSJ100

17.5AILSJ4017.5AILSJ5017.5AILSJ63

17.5AIMSJ100

24AFMSJ5024AFMSJ6324AIMSJ71

3.63.63.63.63.63.63.6

3.63.63.63.63.63.63.6

12

17.517.517.5

17.5

242424

6.310162025

31.540

6.310162025

31.540

100

405063

100

506371

40404040404040

40404040404040

31.5

252525

25

202020

13314949106106106

13132031106106106

176

7898156

176

137125176

15879.250.838.128.919.211.6

15895.663.345.928.719.111.4

5.03

26.321.112.3

7.33

29.523.615.1

9111821252626

9132225252625

70

587368

102

102130106

192192192192192192192

292292292292292292292

292

292292292

442

442442442

4.5X101

2.3X102

5.5X102

9.8X102

1.3X102

2.9X102

8.0X102

4.5X101

1.3X102

3.0X102

6.3X102

1.3X102

2.9X102

8.0X102

1.4X104

1.3X103

2.0X103

5.0X103

1.4X104

1.8X103

3.2X103

6.3X103

1.9X102

9.7X102

2.4X103

4.2X103

1.2X103

2.7X103

7.5X103

1.9X102

5.4X102

1.3X103

2.7X103

1.2X103

2.7X103

7.5X103

2.0X105

1.8X104

2.7X104

7.0X104

2.0X105

2.9X104

4.5X104

8.5X104

50.850.850.850.850.850.850.8

50.850.850.850.850.850.850.8

76.2

76.276.276.2

76.2

76.276.276.2

1.11.11.11.11.11.11.1

1.631.631.631.631.631.631.63

3.3

3.33.33.3

4.5

4.54.54.5

Part Number

CurrentRating

Length Diameter

ø

Un

kV

In

A

I1

kA mmm Ω W

A2s

mm


I3

A



JouleIntergral

(I2t)

VoltageRating



Selection Tables

Table of ratings for ‘A’ range 3.6 - 24kV to DIN dimensions

Table of ratings for ‘F’ range 12 - 24kV to DIN dimensions

12FDLSJ6.312FDLSJ1012FDLSJ1612FDLSJ2012FDLSJ2512FDLSJ31.5

12FFLSJ4012FFLSJ5012FFLSJ6312FXLSJ8012FXLSJ100

24FDMSJ6.324FDMSJ1024FDMSJ1624FDMSJ2024FDMSJ2524FDMSJ31.5

24FFMSJ2524FFMSJ31.524FFMSJ4024FFMSJ45

121212121212

1212121212

242424242424

24242424

6.310162025

31.5

40506380

100

6.310162025

31.5

2531.54045

505050505050

5050505050

35.535.535.535.535.535.5

35.535.535.535.5

6.310162025

31.5

40506380100

6.310162025

31.5

2531.54045

20811655.439.631.226.4

19.714.812.47.945.64

43721811882.254.748.6

58.648.838.431.4

101517202636

4251727282

212939434871

47708592

292292292292292292

292292292292292

442442442442442442

442442442442

6.9X101

2.2X102

8.8X102

1.7X103

2.8X103

2.6X103

3.8X103

6.8X103

5.1X103

2.2X104

4.2X104

6.8X101

2.7X102

8.2X102

1.6X103

3.4X103

3.2X103

3.4X103

4.7X103

7.6X103

7.2X103

6.3X102

2.1X103

3.9X103

7.6X103

1.3X104

1.3X104

3.8X104

5.6X104

5.4X104

1.1X105

2.0X105

5.4X102

2.1X103

2.7X103

5.1X103

1.2X104

1.2X104

1.1X104

1.5X104

2.5X104

3.0X104

50.850.850.850.825.850.8

76.276.276.28888

50.850.850.850.850.850.8

76.276.276.276.2

1.631.631.631.631.631.63

3.163.163.16

44

2.22.22.22.22.22.2

4.54.54.54.5

Part Number

CurrentRating

Length Diameter

ø

Un

kV

In

A

I1

kA mmm Ω W

A2s

mm


I3

A



JouleIntergral

(I2t)

VoltageRating



Notes

a) 17.5kV fuse links in 10/12 dimensions are offered, since some switchgear in the 10/12 series is suitable for use at higher voltages.

b) Fuse links listed are normally for indoor use but versions suitable for outdoor use are olso available in the same ratings and dimensions. For outdoor versions of the ‘S’ range, replace the ‘S’ with a ‘T’ when ordering - for example ‘TDLSJ’

c) * All the fuse link code references listed in the proceeding tables are for striker fitted versions, for non-striker versions please replace the letter ‘S’ with the letter ‘N’ in the code - for example ‘SDLNJ’. For further information on our parts referencing system, please refer to section 10 of this catalogue.


6

DIN - Fuse Links

6.3A

10A

16A

20A

25A

31.5A

40A

50A

63A

80A

100A

125A

160A

5

Time current characteristics for 7.2kV DIN Fuse Links, ‘S’ range, fuse types SDL, SFL


PRE - ARCING TIME IN SECONDS

CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

7

DIN - Fuse Links

6.3A

10A

16A

20A

25A

31.5A

40A

50A (S

DL

)

63A (S

DL

)

80A

100A

125A

160A

200A

5

Time current characteristics for 12kV DIN Fuse Links, ‘S’ range, fuse types SDL, SFL, SKL and SXL



CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

8

6.3A

10A

16A

20A

25A

31.5A (S

DM

)

40A (S

DM

)

50A (S

FM

)

63A

80A/75A

100A (15.5kV

ON

LY)

125A (15.5kV

ON

LY)

5

DIN - Fuse LinksTime current characteristics for 15.5, 17.5kV DIN Fuse Links, ‘S’ range, fuse types SDL, SFL, SDM, SFM and SKM


CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S


9

DIN - Fuse Links

Time current characteristics for 24kV DIN Fuse Links, ‘S’ range, fuse types SDM, SXM and SFM


6.3A

10A

16A

20A

25A

31.5A

40A (S

DM

)

50A

63A

71A

80A

100A

125A

160A

5


CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

10

DIN - Fuse LinksTime current characteristics for 36kV DIN Fuse Links, ‘S’ range, fuse types SDQ, SFQ and SXQ

5

6.3A

10A

16A

20A

25A

31.5A

40A

50A

63A (S

XQ

)


CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S


11

DIN - Fuse Links

Time current characteristics for 12kV DIN Fuse Links, ‘F’ range, fuse types FDL, FFL and FXL

1 HO

UR

100A

80A

63A

50A

40A

31.5A

25A

20A

16A

10A

6.3A

5



CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

12

DIN - Fuse LinksTime current characteristics for 24kV DIN Fuse Links, ‘F’ range, fuse types FDM and FFM

1 HO

UR

45A

40A

31.5A

25A

20A

16A

10A

6.3A

5

43


CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S


13

DIN - Fuse Links

Dimensions (mm)

Please refer to the ‘how to order’ page 61 of this catalogue for further details of how ordering codes are formatted

Forc

e (N

)

Forc

e (N

)

60

50

40

0

20

0

0 5 10 15 20 25 30

Travel (mm)Travel (mm)

PRODUCT CODE

ADOSJSDOSJADLSJFDLSJSDLSJFDMSJSDMSJSDQSJSFOSJAILSJFFLSJSFLSJSKLSJAIMSJFFMSJSFMSJSKMSJSFQSJSXLSJSXMSJSXQSJFXLSJ

A

192192292292292442442537192292292292292442442442442537292442537292

D

51515151515151517676767676767676767688888888

60

70

80

90

50

40

30

20

10

0 5 10 15 20 25 30

26mm maximum travel after operation

Striker characteristics

E = Spring Striker 80N to IEC 60282-1designation ‘medium’

S = Spring Striker 50N to DIN 43625 and IEC 60282-1 designation ‘medium’


14

DIN - Fuse Links

Min Max Min Max Min Max

Transformer Primary Voltage

TranformerRating

(kVA)

10(kV)

20(kV)

30(kV)

Rated Current of theHigh Voltage Fuse Link



50100125160200250315400500630800

1000

80125160200250315400500630800

10001250

10162025

31.540506380

100125125

101625

31.531.550638080

100125125

6.3101016162025

31.540505063

6.31616162025

31.54050505071

3.156.36.3101616162025

31.54050

3.1510101016162025

31.5404050

Low Voltage

NH Fuse Size

gG/gL

(A)

General guide to the selection of DIN Fuse Links for use in the primary circuit of three phase transformers

1. The fuse link should withstand transformer magnetising inrush currents, taken as 12 times full load current for 0.1 seconds.

2. The fuse link should discriminate with the rating of secondary fuse link stated or where only individual cable exit protection exists, the highest rating likely to be used.

3. The fuse link should operate within 2 seconds for transformers complying with IEC60076 - 5 in respect of impedance, voltage and short circuit withstand current.

4. The fuse link should operate reasonably quickly in the event of a transformer internal fault, or an earth fault in the secondary terminal zone of the transformer.

5. In the case where there is no secondary fuse link for overload protection, the minimum recommended HV fuse link rating applies to the use of fuse links in encapsulated enclosures where permissible continuous overload is generally limited to 20% of transformer full load current. However if greater overload currents are permissible a higher rating of fuse link may be required. Where the fuse link is used in open air or conditions of unrestrictedventilation a higher permissible overload may be possible.

6. In most cases more than one rating of HV fuse link is recommendedfor a particular transformer size. Choice of fuse link will then depend on which fuse offers the best protection e.g. having one fuse for several transformer sizes.

Recommendations for other voltages are available on request.

For HV DIN Fuse Links type SXLSJ, SDLSJ, SFLSJ, SKLSJ, SDMSJ, SFMSJ, SXMSJ SDQSJ, SFQSJ. Selection guideusing LV Fuse Links operating class gG/gL on the low voltage side for overload protection of the transformer.

Selection of these HV fuse links has been based on the following:



TranformerRating

(kVA)

10(kV)

20(kV)

30(kV)




50100125160200250315400500630800

1000125016002000

6.31616162025

31.540506380

100125160200

101625

31.531.550638080

100125125200200200

6.36.310101616202025

31.540506371100

6.31616162025

31.54050505071

100100160

3.156.36.36.310101616162025

31.5405063

3.1510101016161625

31.5404050506363

For HV DIN Fuse Links type SXLSJ, SDLSJ, SFLSJ, SKLSJ, SDMSJ, SFMSJ, SXMSJ SDQSJ, SFQSJ. Selection guideusing LV Fuse Links operating class gG/gL on low voltage side for individual cable exit protection.


Sel

ecti

on

Tab

le f

or

Bac

k-up

Fus

e Li

nks

Sel

ecti

on

Tab

le f

or

Bac

k-up

Fus

e Li

nks

15

DIN - Fuse Links

Min Max Min Max


TranformerRating

(kVA)

10(kV)

20(kV)



50100125160200250315400500630800

1000

6.31016162025

31.540506380

100

102025

31.540506380

100100100100

6.36.36.3101016162025

31.54045

6.31016162025

31.54045454545


For HV DIN fuse links type FDLSJ, FFLSJ, FXLSJ, FDMSJ, FFMSJ. Selection guide using LV fuse links operatingclass gG/gL on low voltage side for individual cable exit protection.




TranformerRating

(kVA)

10(kV)

20(kV)

30(kV)




Low Voltage

NH Fuse Size

gTr

(A)

100125160200250315400500630800

1000

1001251602002503154005006308001000

16162025

31.540506380100125

161625

31.540506380

100125160

10101616162525

31.5406363

101016162525

31.540506380

6.310101616202525

31.54040

6.3101016202525

31.5405050

For HV DIN fuse links type SXLSJ, SDLSJ, SFLSJ, SKLSJ, SDMSJ, SFMSJ, SXMSJ SDQSJ, SFQSJ. Selection guideaccording to DIN VDE 0670 part 402 using LV fuse links operating class gTr on low voltage side for overloadprotection of the transformer.









Sel

ecti

on

Tab

le f

or

Bac

k-up

Fus

e Li

nks

Sel

ecti

on

Tab

le f

or

Full

Ran

ge

Fuse

Lin

ks

16

DIN - Fuse Links

Min Max Min Max


TranformerRating

(kVA)

10(kV)

20(kV)



100125160200250315400500630800

1000

100125160200250315400500630800

1000

101616202540405080

100100

2025

31.540506380100100100100

6.3101016202025

31.54045-

1016162025

31.540454545-

Low Voltage

NH Fuse Size

gTr

(kVA)


For fuse links type FDLSJ, FFLSJ, FXLSJ, FDMSJ, FFMSJ. Selection guide according to DIN VDE O670 part 402using LV fuse links operating class gTr on low voltage side for overload protection of the transformer.

Min Max Min Max


TranformerRating

(kVA)

10(kV)

20(kV)



50100125160200250315400500630800

801251602002503154005006308001000

6.310161620

31.5404050100100

6.3101620

31.540406363

100100

6.310101616162025

31.540-

6.3101016162020

31.54045-

Low Voltage

NH Fuse Size

gG/gL

(A)

For HV DIN fuse links type FDLSJ, FFLSJ, FXLSJ, FDMSJ, FFMSJ. Selection guide using LV fuse links operatingclass gG/gL on low voltage side for overload protection of the transformer.










Sel

ecti

on

Tab

le f

or

Full

Ran

ge

Fuse

Lin

ksS

elec

tio

n Ta

ble

fo

r Fu

ll R

ang

e Fu

se L

inks

17

Motor Fuse Links

Bussmann Motor Fuse Links

The Bussmann range of motor fuse links are designed to meet the specific requirements necessary for motor protection. During the starting cycle of direct on-line motors, the fuse elements will reach a considerably higher temperature than during normal operation; (this is due to the the high amount of current the motor will draw as it starts,typically, 6 times its normal load current value). This results in expansion and contraction of the fuse elements and could cause premature operation of the fuse.

Bussmann motor fuse links encompass an advanced design to minimise this effect. This therefore, negates the need to over specify the fuse rating due to high values of of motor starting current.

Bussmann motor fuse links operate extremely quickly under heavy fault currents, resulting from the time / current characteristic. Low power dissipation ensures low temperature rise, important in multi-tier starters for example. Switching (Arc), voltages are lower than permitted values, therefore, 5.5kV fuses are also suitable for 4.8kV and 2.4kV circuits.

Motor fuse links comply with IEC60282-1, IEC644 and BS5907.

Available in DIN 43625 and BS2692 dimensions.

Sold in a wide range of ratings from: 3.6 kV – 5 to 450 A 7.2 kV – 5 to 355 A

North American dimensioned products also available. 2R to 24R ratings.

DIN Dimensioned Motor Fuse Links

British Standard Motor Fuse Links North American Motor Fuse Links


Application

Fuse Links provide short circuit protection in motor circuits to both the motor starter and cables from the starter to the motor.Overload protection is provided by the motor starter, generally by an overload relay and contactor. Combination striker trippingmay also form part of associated equipment which houses the fuse links and motor starters.

Application Procedure

For any motor the fuse current rating is determined by magnitude and duration of starting current, except in a few situationswhere the starting currents are very light. The fuse current rating should therefore be selected as follows:

Direct-on-line Starting

In the absence of specific information the starting current can usually be taken to be six times the motor’s full load current.The starting time will depend on the type of the drive but will be approximately as follows:

Pump Motors - 6 seconds

Mill Motors - 10 to 15 seconds

Fan Motors - 60 seconds

These are average values and the appropriate figures for starting current and starting time for actual installation should be obtainedwherever possible.

Multiply the starting current by 1.7 and using this value of current and the starting time, (it is recommended that a minimumtime of 5 seconds be adopted), plot this point on the time-current characteristics of the fuse link. The correct current ratingof the fuse is then chosen as being the one immediately to the right of the point so plotted. The chosen fuse must also havea current rating of at least 1.3 times the full-load current of the associated motor.

The rating chosen will be adequate for normal applications where the associated motor is not started more than twice in givenperiod of one hour.

For applications using more frequent starting duties, a greater derating factor must be applied as shown in the following table.

Assisted Starting

A similar method of fuse selection may be used as for direct-on-line starting (see above), but it must be noted that thenormal running current of the motor is likely to be closer in value to the nominal current rating of the fuse than for direct-on-line applications.

The rating of fuse chosen will need to be appreciably greater than the motor running current to allow for restricted cooling insidecontrol gear cubicles, particularly where multi-tier starters are involved. In case of doubt refer to Bussmann for further guidance.

Note

For applications involving more frequent starting duties than 16 times per hour or where unusual duty cycles are involved,consult Bussmann application engineers for advice.

18

Motor Fuse Links

Maximum 2 starts per hour - Derating factor 1.7 Maximum 8 starts per hour - Derating factor 2.1

Maximum 4 starts per hour - Derating factor 1.9 Maximum 16 starts per hour - Derating factor 2.4


19

Motor Fuse Links

WDOH6 fuse links also available in the range 6.3 to 40A as code ADOH6.

3.6WJON653.6WJON66.33.6WJON6103.6WJON6163.6WJON6203.6WJON6253.6WJON631.53.6WJON6403.6WJON650

3.6WDOH6503.6WDOH6633.6WDOH6803.6WDOH61003.6WDOH6125

3.6WFOH61603.6WFOH6200

3.6WDFHO503.6WDFHO633.6WDFHO803.6WDFHO1003.6WDFHO125

3.6WFFHO1603.6WFFHO200

3.6WKFHO2503.6WKFHO3153.6WKFHO3553.6WKFHO400

3.6WFGHO31.53.6WFGHO403.6WFGHO503.6WFGHO633.6WFGHO803.6WFGHO1003.6WFGHO1253.6WFGHO1603.6WFGHO2003.6WFGHO250

3.6WKGHO3153.6WKGHO3553.6WKGHO4003.6WKGHO450

7.2WFNHO257.2WFNHO31.57.2WFNHO407.2WFNHO507.2WFNHO637.2WFNHO807.2WFNHO1007.2WFNHO1257.2WFNHO160

7.2WKNHO2007.2WKNHO2247.2WKNHO2507.2WKNHO315

3.63.63.63.63.63.63.63.63.6

3.63.63.63.63.6

3.63.6

3.63.63.63.63.6

3.63.6

3.63.63.63.6

3.63.63.63.63.63.63.63.63.63.6

3.63.63.63.6

7.27.27.27.27.27.27.27.27.2

7.27.27.27.2

56.310162025

31.54050

506380

100125

160200

506380

100125

160200

250315355400

31.540506380

100125160200250

315355400450

2531.540506380

100125160

200224250315

505050505050505050

5050505050

5050

5050505050

5050

50505050

50505050505050505050

50505050

404040404040404040

40404040

132424565670112112140

180225288360450

600600

152171190190190

300300

520650820820

151151151151170212212300300500

852852960

1150

8496107122133133262300337

500500960960

14856.356.333.122.117.710.17.546.03

5.363.682.882.161.73

1.280.938

6.615.033.522.872.44

1.531.24

0.6530.4350.3450.345

18.413.99.246.935.474.403.602.161.771.13

0.6460.5120.4540.379

38.725.518.213.310.47.304.922.942.05

1.631.441.110.779

588121215141721

2021273139

4752

2128313953

5467

57605976

25313238486279759596

8990

100108

343540465665696372

9098

105107

192192192192192192192192192

192192192192192

192192

254254254254254

254254

254254254254

359359359359359359359359359359

359359359359

403403403403403403403403403

403403403403

2.0X101

1.6X102

1.6X102

1.7X102

3.9X102

6.1X102

1.2X103

2.1X103

3.2X103

1.8X103

3.8X103

6.3X103

9.8X103

1.5X104

3.1X104

5.7X104

1.8X103

3.1X103

6.3X103

9.5X103

1.3X104

3.4X104

5.1X104

1.8X105

4.1X105

6.4X105

6.4X105

4.5X102

8.0X102

1.8X103

3.2X103

5.1X103

7.9X103

1.2X104

3.4X104

5.1X104

1.3X105

4.5X105

6.4X105

8.2X105

1.2X106

1.4X102

3.1X102

6.1X102

1.2X103

1.9X103

3.8X103

9.8X103

2.4X104

5.0X104

8.8X104

1.1X105

2.2X105

4.5X105

1.6X103

1.3X103

1.3X103

1.4X103

3.2X103

4.9X103

9.8X103

1.7X104

2.6X104

2.4X104

4.5X104

8.0X104

1.1X105

2.2X105

6.2X105

1.1X106

2.4X104

4.5X104

8.0X104

1.2X105

1.8X105

4.1X105

7.2X105

2.4X106

5.0X106

7.0X106

7.0X106

6.0X103

1.2X104

2.2X104

4.5X104

7.5X104

1.2X105

1.7X105

4.2X105

7.0X105

1.9X106

6.0X106

8.5X106

1.1X107

1.5X107

2.1X103

4.7X103

8.0X103

1.5X104

3.0X104

5.8X104

1.3X105

2.4X105

7.0X105

1.3X106

1.6X106

1.6X106

3.1X106

353535353535353535

5151515151

7676

5151515151

7676

76767676

76767676767676767676

76767676

767676767676767676

76767676

0.540.540.540.540.540.540.540.540.54

1.11.11.11.11.1

2.12.1

1.461.461.461.461.46

3.23.2

3.23.23.23.2

4.14.14.14.14.14.14.14.14.14.1

3.93.93.93.9

4.44.44.44.44.44.44.44.44.4

4.44.44.44.4

Part Number

CurrentRating

Length Diameter

ø

In

A

Un

kV

I1

kA mmm Ω W

A2s

mm


I3

A



JouleIntergral

(I2t)

VoltageRating



Selection Tables

Table of ratings for motor fuses 3.6 - 7.2kV to British Standard dimensions


20

Motor Fuse Links

Higher Current Ratings

Higher ratings than those tabulated above can be obtained by using fuse links connected in parallel. Special fixing arrangements forconnecting up to 3 fuse links in parallel, are available. Please contact Bussmann application engineers for more details. The codedesignations for these arrangements are given in ‘How to Order’ (page 61), dimensional drawings are given on page 26.

Selection Tables

Table of ratings for motor fuses 3.6 - 7.2kV to DIN dimensions

3.6WDOSJ503.6WDOSJ633.6WDOSJ803.6WDOSJ1003.6WDOSJ125

3.6WFOSJ1603.6WFOSJ200

3.6WDLSJ503.6WDLSJ633.6WDLSJ803.6WDLSJ1003.6WDLSJ1253.6WFLSJ1603.6WFLSJ200

3.6WKLSJ2503.6WKLSJ3153.6WKLSJ400

7.2WFMSJ257.2WFMSJ31.57.2WFMSJ407.2WFMSJ507.2WFMSJ637.2WFMSJ807.2WFMSJ1007.2WFMSJ1257.2WFMSJ160

7.2WKMSJ2007.2WKMSJ2247.2WKMSJ2507.2WKMSJ3157.2WKMSJ355

3.63.63.63.63.6

3.63.6

3.63.63.63.63.63.63.6

3.63.63.6

7.27.27.27.27.27.27.27.27.2

7.27.27.27.27.2

506380

100125

160200

506380

100125160200

250315400

2531.540506380

100125160

200224250315355

5050505050

5050

50505050505050

505050

636363636363636363

6363636363

180225288360450

600600

152171190190190300300

820820820

8496

107122133133262300337

500500960960

1000

5.363.682.882.161.73

1.280.938

7.735.94.123.382.851.741.42

0.7410.5070.401

33.925.417.814.811.68.125.333.192.23

1.791.591.23

0.8690.724

2021273139

4752

27323746616180

676990

334056536172747079

99110107120125

192192192192192

192192

292292292292292292292

292292292

442442442442442442442442442

442442442442442

1.8X103

3.8X103

6.3X103

9.8X103

1.5X104

3.1X104

5.7X104

1.8X103

3.1X103

6.3X103

9.5X103

1.3X104

3.4X104

5.1X104

1.9X105

4.0X105

6.4X105

1.4X102

3.1X102

6.1X102

1.2X103

1.9X103

3.8X103

9.8X103

2.4X104

5.0X104

8.8X104

1.1X105

2.2X105

4.5X105

6.4X105

2.4X104

4.5X104

8.0X104

1.1X105

2.2X105

6.2X105

1.1X106

2.4X104

4.5X104

8.0X104

1.2X105

1.8X105

4.1X105

7.2X105

2.4X106

5.0X106

7.0X106

2.1X103

4.7X103

8.0X103

1.5X104

3.0X104

5.8X104

1.3X105

2.4X105

7.0X105

1.3X106

1.6X106

1.6X106

3.1X106

3.9X106

5151515151

7676

51515151517676

767676

767676767676767676

7676767676

1.11.11.11.11.1

2.12.1

1.631.631.631.631.633.163.16

3.163.163.16

5.25.25.25.25.25.25.25.25.2

5.25.25.25.25.2

Part Number

CurrentRating

Length Diameter

ø

In

A

Un

kV

I1

kA mmm Ω W

A2s

mm


I3

A



JouleIntergral

(I2t)

VoltageRating



Table of ratings for motor fuses 2.75 - 5.5kV to USA dimensions

2.75VFRHA*R2.75VFRHA*R2.75VFRHA*R2.75VFRHA*R

2.75VKRHA*R2.75VKRHA*R

2.75VKRHK*R2.75VKRHK*R

5.5VFNHA*R5.5VFNHA*R5.5VFNHA*R5.5VFNHA*R

5.5VKNHA*R5.5VKNHA*R

5.5VKNHK*R5.5VKNHK*R

2.752.752.752.75

2.752.75

2.752.75

5.55.55.55.5

5.55.5

5.55.5

2R3R4R6R

9R12R

18R24R

2R3R4R6R

9R12R

18R24R

60606060

6060

6060

60606060

6060

6060

180229257525

500500

500500

180229257525

500500

500500

6.154.042.691.62

1.151.03

0.5770.514

8.355.483.652.31

1.631.45

0.8150.725

52576265

7080

140156

70778591

99110

198220

276276276276

276276

276276

403403403403

403403

403403

8.1x103

1.9x104

4.2x104

3.9x104

8.8x104

1.1x105

3.5x105

4.5x105

8.1x103

1.9x104

4.2x104

3.9x104

8.8x104

1.1x105

3.5x105

4.5x105

2.8x104

7.5x104

1.4x105

3.4x105

8.4x105

1.2x106

3.2x106

5.5x106

2.8x104

7.9x104

1.6x105

3.6x105

8.8x105

1.3x106

3.4x106

5.8x106

76767676

7676

7676

76767676

7676

7676

2.52.52.52.5

2.52.5

5.25.2

3.83.83.83.8

3.83.8

7.87.8

Part Number

CurrentRating

Length Diameter

ø

In

A

Un

kV

I1

kA mmm Ω W

A2s

mm


I3

A



JouleIntergral

(I2t)

VoltageRating




21

Motor Fuse Links

Time current characteristics for 3.6kV Motor Fuse Links, fuse types ADL, WDL, WFL and WKL

6.3A

10A

16A

20A

25A

31.5A

40A

50A

63A

80A

100A

125A

160A

200A

250A

315A

400A

5



CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

22

Motor Fuse LinksTime current characteristics for 3.6kV Motor Fuse Links, fuse types WDF, WFF and WKF

50A

63A

80A

100A

125A

160A

200A

250A

315A

400A

5


CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S


23

Motor Fuse Links

Time current characteristics for 3.6kV Motor Fuse Links, fuse types WFG and WKG


31.5A

40A

50A

63A

80A

100A

125A

160A

200A

250A

315A

355A

400A

450A

5


CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

24

Motor Fuse LinksTime current characteristics for 7.2kV Motor Fuse Links, fuse types WFN, WKN, WFM and WKM (* only WKM)

25A

31.5A

40A

50A

63A

80A

100A

125A

160A

200A

224A

250A

315A

355A (W

KM

)*

5


CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S


25

Motor Fuse Links

Dimensions (mm)

FUSE LINK TYPE

WDOSJWDLSJWFOSJWFLSJWKLSJWFMSJWKMSJ

A

192292192292292442442

D

51517676767676

Fuse Link type: DIN

FUSE LINK TYPE

+WJON6 WDO*H6WFO*H6

A

257261261

B

235235235

C

192192192

D

365176

E

9.510.510.5

F

131320

G

252564

H

232942

J

2.42.62.6

Fuse Link type: Tag Type “6” - BS 2692 Standard

+ Fuse type not available withstriker

26mm maximum travel after operation

Fuse type: WJO

min 10 to max 16mm travel after operation

Fuse type: WDO, WFO

Dimensions in mm


26

Motor Fuse Links

Fuse Link type: Tag Type “0” - BS 2692 Standard

FUSE LINK TYPE

WDFHOWFFHOWKFHOWFGHOWKGHOWFNHOWKNHO

A

337337337442442486486

B

305305305410410454454

C

254254254359359403403

D

51767676767676

Triple barrel fuse link (3rd barrel shown dotted) with 03 tags.

Double barrel fuse link with 02 tagsshown in full lines.

Dimensions (mm)




For more information visit our website www.bussmann.com27

Motor Fuse Links

Fuse Link type: USA Motor

FUSE LINK TYPE

VFRHAVKRHAVKRHKVFNHAVKNHAVKNHK

A

276276276403403403

76

A

80 M

ax10 Min - 16 Max striker travel after operation if fitted

76

K Tags (Double barrel fuse links)

76

A

85 160

10 Min - 16 Max striker travel after operation if fitted10 Min - 16 Max striker travel after operation if fitted

A Tags (ferrule)

K Tags (Double barrel fuse links)

FUSE LINK TYPE

VFRHAVKRHAVKRHKVFNHAVKNHAVKNHK

A

276276276403403403

Dimensions (mm)

28

Voltage and Auxiliary Transformer Fuse Links


Bussmann manufacture a wide range of voltage transformer (VT) fuse links. In North America they are referred to as Potential Transformer fuses. These fuse links are designed for use in the primary side of voltage transformers to provide system isolation in the event of faults occurring in the transformer circuit.

Voltage transformer fuse links, have a preferred current rating of 3.15A. Experience has shown that there is a risk of spurious operation by transient overcurrents where lower current ratings are used. In addition, in order to minimise the risk of deterioration of the fine fuse elements caused by corona, it is desirable to mount the fuse links so that the earthed metal is not in the immediate vicinity of the part of the barrel between the ferrules.

Higher current and ‘E’ ratings are available for special applications, including auxiliary transformers.

A range of VT fuse links with a breaking capacity of 200kA for use at the output terminals of large turbo alternators can also be ordered. For further information, please contact Bussmann application engineers.

Types prefixed ‘A’ or ‘N’ are suitable for use in Air only. Types prefixed ‘O’ may be used under oil.

For DIN dimensioned voltage transformer and auxiliary transformer fuse links, please refer to DIN dimensioned fuse link section.

British Standard VT Fuse Links.

A range of voltage transformer primary Fuse Links to BS2692-1 and IEC60282-1.

Wide range of ratings from 1 kV to 36 kV.

3.15 Amp industry standard current ratings.

CAV range with ratings from 3.6kV to 38kV.

Bussmann Voltage and Auxiliary Transformer Fuse Links



The last letter of the ordering code on these items is normally either ‘A’ or ‘22’, please refer to ‘how to order’ page 61 for an explanation.

1.1NBUN*21.1NBUN*3.151.1NBUN*6.3

3.6ABWN*3.153.6ABWN*6.3

3.6ABCN*3.153.6ABCN*6.33.6ABCN*10

5.5AMWNA0.5E5.5AMWNA1E5.5AMWNA2E5.5AMWNA3E5.5AMWNA4E5.5AMWNA5E

5.5ABWNA0.5E5.5ABWNA1E5.5ABWNA2E5.5ABWNA3E5.5ABWNA5E

7.2ABWN*3.157.2ABWN*6.3

7.2ABCN*3.157.2ABCN*6.3

7.2OBCN*3.157.2OBCN*6.3

7.2OBWN*3.157.2OBWN*6.3

12ABCN*3.1512OBCN*3.15

15.5ABFN*3.1515.5OBFN*3.15

17.5ABGN*3.1517.5OBGN*3.15

24ABGN*3.1524OBGN*3.15

36OBGN*3.15

1.11.11.1

3.63.6

3.63.63.6

5.55.55.55.55.55.5

5.55.55.55.55.5

7.27.2

7.27.2

7.27.2

7.27.2

1212

15.515.5

17.517.5

2424

36

23.156.3

3.156.3

3.156.310

0.512345

0.51235

3.156.3

3.156.3

3.156.3

3.156.3

3.153.15

3.153.15

3.153.15

3.153.15

3.15

505050

5050

505050

505050505050

5050505050

4545

4545

4545

4545

4545

3232

3535

2525

31.5

0.1450.1070.065

0.3580.120

0.3580.1200.080

32.516.0

0.5840.3200.1900.147

50.225.11.08

0.4690.199

0.6140.240

0.6140.240

0.6140.240

0.6140.240

1.211.21

1.241.24

1.451.45

2.002.00

2.05

868686

142142

195195195

142142142142142142

142142142142142

142142

195195

195195

142142

195195

254254

359359

359359

359

6.3X100

1.2X101

3.2X101

6.3X100

4.8X101

6.3X100

4.8X101

1.1X102

1.2X100

5.0X100

4.0X100

1.8X101

4.6X101

7.9X101

0.49X100

2.0X100

1.2X100

6.3X100

3.2X101

6.3X100

4.8X101

6.3X100

4.8X101

6.3X100

4.8X101

6.3X100

4.8X101

6.3X100

6.3X100

6.3X100

6.3X100

6.3X100

6.3X100

6.3X100

6.3X100

1.2X101

1.8X101

3.4X101

9.2X101

1.8X101

3.1X102

1.8X101

3.1X102

7.0X102

3.5X100

1.4X101

1.2X101

1.1X102

3.0X102

5.1X102

1.4X100

5.7X100

3.4X100

1.8X101

2.0X102

4.0X101

3.1X102

4.0X101

3.1X102

4.0X103.1X102

4.0X103.1X102

1.8X101

1.8X101

4.0X101

4.0X101

4.0X101

4.0X101

4.0X101

4.0X101

7.7X101

25.425.425.4

25.425.4

25.425.425.4

20.620.620.620.620.620.6

25.425.425.425.425.4

25.425.4

25.425.4

25.425.4

25.425.4

25.425.4

25.425.4

25.425.4

25.425.4

25.4

0.120.120.12

0.190.19

0.2450.2450.245

0.1140.1140.1140.1140.1140.114

0.190.190.190.190.19

0.190.19

0.2450.245

0.2450.245

0.190.19

0.2450.245

0.310.31

0.430.43

0.430.43

0.43

Part Number

CurrentRating

Length Diameter

ø

In

A

Un

kV

I1

kA mmΩ

A2s

mm


Cold Resistance JouleIntergral

(I2t)

VoltageRating



A 36kV AGBN* 3.15A is also available for certain indoor applications. Please contact Bussmann’s application engineersfor further information.

Fuse Link type: TAG type “A” Ferrule and “22”

FUSE LINK TYPE

NBUN*ABWNAAMWNAOBWN*ABCN*OBCN*ABFN*OBFN*ABGN*OBGN*

A

86142142142195195254254359359

B

17.5301630303030303030

D

25.425.420.525.425.425.425.425.425.425.4

Table of ratings for voltage transformer fuses 1.1 - 36kV

8mm bolt with BSW thread

Selection Table

*

Ferrule Fuse Link Tag type “A” shown in full lines and “22” Tag shown in dotted lines

30



* Curve valid

for all 3.15A ratings show

n in the selection table.

† Curve valid

for all 6.3A ratings show

n in the selection table.

Time current characteristics for 3.6 to 36kV VT Fuse Links of 3.15, 6.3 and 10 Amp ratings

1 HO

UR

10A

6.3A

3.15A*

5

3 4


CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S



Time current characteristics for E rated 5.5kV VT Fuse Links, fuse type ABWNA (minimum melting times)

1

0.5E

1E

2E

3E

4E

5E

10080

605040

30

20

108

54

3

2

1.8

.6

.5

.4

.3

.2

.1.08

.06

.05

.04

.03

.02

.01

2 3 4 5 6 8 10 200

300

400

500

0.5 20 30 40 50 60 80 100

TIME

IN S

EC

ON

DS

RMS SYMMETRICAL CURRENT IN AMPS

32



Time current characteristics for E rated 5.5kV VT Fuse Links, fuse type ABWNA (maximum melting times)

10080

605040

30

20

108

54

3

2

1.8

.6

.5

.4

.3

.2

.1.08

.06

.05

.04

.03

.02

.01

2 3 4 5 6 8 10 200

300

400

500

0.5 20 30 40 50 60 80 100

TIME

IN S

EC

ON

DS


0.5E

1E

2E

3E

4E

5E



Time current characteristics for E rated 5.5kV VT Fuse Links, fuse type AMWNA (minimum melting times)

10080

605040

30

20

108

54

3

2

1.8

.6

.5

.4

.3

.2

.1.08

.06

.05

.04

.03

.02

.01

2 3 4 5 6 8 10 200

300

400

500

0.5 20 30 40 50 60 80 100

TIME

IN S

EC

ON

DS


0.5E

1E

2E

3E

5E

34



Time current characteristics for E rated 5.5kV VT Fuse Links, fuse type AMWNA (maximum melting times)

10080

605040

30

20

108

54

3

2

1.8

.6

.5

.4

.3

.2

.1.08

.06

.05

.04

.03

.02

.01

2 3 4 5 6 8 10 200

300

400

500

0.5 20 30 40 50 60 80 100

TIME

IN S

EC

ON

DS


0.5E

1E

2E

3E

5E



These Voltage Transformer fuse links are available in the ratings shown in the table above. CAV fuse links are suitable forindoor use in air only. Type CAVH Fuse links are fitted with striker pins which may be used for indication purposes.

Selection Table

Fuse Link type: CAV (Shown with striker fitted)

FUSE LINK TYPE

3.6CAV5.5CAV5.5CAVH7.2CAV12CAV15.5CAV15.5CAVH17.5CAV24CAV36CAV38CAV38CAVH

A

220

187

220220

327

220340440

440 max 20mm travel after operation

Table of ratings for voltage transformer fuses, 3.6 - 38kV type CAV

mm

3.6CAV2

5.5 CAV15E

5.5CAVH0.5E5.5CAVH1E5.5CAVH2E

7.2CAV27.2CAV47.2CAV67.2CAV10

12CAV2

15.5CAV0.5E15.5CAV1E15.5CAV2E15.5CAV3E15.5CAV5E15.5CAV7E

15.5CAVH0.5E15.5CAVH1E15.5CAVH2E

17.5CAV217.5CAV417.5CAV617.5CAV10

24CAV224CAV324CAV4

36CAV236CAV4

38CAV4E

38CAVH0.5E38CAVH1E38CAVH2E

3.6

5.5

5.5 5.5 5.5

7.2 7.2 7.2 7.2

12

15.5 15.515.515.515.515.5

15.515.515.5

17.517.517.517.5

242424

3636

38

383838

2

15

0.512

24610

2

0.512357

0.512

24610

234

24

4

0.512

50

50

505050

40404040

40

808080808080

808080

40404040

404040

4040

40

404040

0.492

0.488

12.112.10.388

0.8930.5030.3210.215

1.34

15175.432.316.20.6590.375

30.130.10.947

1.690.6110.3620.239

2.541.430.916

3.121.12

2.42

66.666.62.20

220

187

187187187

220220220220

220

327327327327327327

327327327

220220220220

340340340

440440

440

440440440

6.2X100

5.5X102

1.4X101

1.4X101

1.8X101

6.2X100

2.0X101

4.8X101

1.1X102

6.2X100

0.5X100

2.0X100

1.2X100

4.8X100

2.0X101

7.1X101

1.4X101

1.4X101

1.8X101

6.3X100

4.8X101

1.4X102

3.2X102

6.2X100

2.0X101

4.8X101

6.2X100

4.8X101

1.2X101

1.4X101

1.4X101

1.8X101

1.8X101

3.5X103

9.0X101

9.0X101

1.1X102

1.8X101

5.7X101

1.4X102

3.2X102

1.8X101

1.5X100

5.8X100

3.5X100

1.4X101

1.3X102

4.5X102

9.0X101

9.0X101

1.1X102

1.8X101

1.4X102

4.0X102

9.2X102

1.8X101

5.7X101

1.4X102

1.8X101

1.4X102

3.4X101

9.0X101

9.0X101

1.1X102

41.3

41.3

41.341.341.3

41.341.341.341.3

41.3

41.341.341.341.341.341.3

41.341.341.3

41.341.341.341.3

41.341.341.3

41.341.3

41.3

41.341.341.3

0.7

0.6

0.60.60.6

0.70.70.70.7

0.7

0.90.90.90.90.90.9

0.90.90.9

0.70.70.70.7

1.01.01.0

1.21.2

1.2

1.21.21.2

kg

Part Number

CurrentRating

Length Diameter

ø

In

A

Un

kV

I1

kA mmΩ

A2s

mm


Cold resistance in free air at rated current

JouleIntergral

(I2t)

VoltageRating



36

Current Limiting Fuse Links for use in Oil Switchgear


Fuse Links comply with IEC 282-1, BS2692-1and ESI Standard 12-8.

7.2 and 12kV Fuse Links tested at highestsystem voltage and approved by the UKElectricity Association approvals panel.

Voltage ranges 3.6 to 24kV.

Fitted with powerful pyrotechnic striker pin.

Bussmann under oil Fuse Links

The Bussmann range of oil tight fuse links are designed for use in oil filled switchgear. This type was pioneered inthe U.K. and the Bussmann range has been in continuous manufacture for almost 40 years, being by far the mostwidely used device of its kind in the world. Over 1,000,000 Bussmann branded fuse links have been put into servicewithout a single reported case of oil ingress. A unique triple seal system ensures against long term sealdeterioration. Low power dissipation ensures cool running in oil filled switchgear.

The range is not suitable for use inside oil filled transformer tanks where high oil temperatures may be expected.


Dimensions (mm)



Selection Table

Part Number

CurrentRating

Length Diameter

ø

In

A

Un

kV

I1

kA mmm Ω

A2s

mm



Dimensional Reference

BS 2692

JouleIntergral

(I2t)

VoltageRating



3.6OEFMA6.33.6OEFMA103.6OEFMA163.6OEFMA203.6OEFMA253.6OEFMA31.53.6OEFMA403.6OEFMA503.6OEFMA633.6OEFMA803.6OEFMA1003.6OEFMA1253.6OEFMA1603.6OEFMA2003.6OEGMA633.6OEGMA803.6OEGMA1003.6OEGMA1253.6OEGMA1603.6OEGMA2003.6OLGMA2507.2OEFMA807.2OEFMA1007.2OEFMA1127.2OHGMA1007.2OHGMA1257.2OHGMA1407.2OHGMA16012OEFMA6.312OEFMA1012OEFMA1612OEFMA2012OEFMA2512OEFMA31.512OEFMA4012OEFMA5012OEFMA6312OHFMA7112OHFMA8012OHGMA6.312OHGMA1012OHGMA1612OHGMA2012OHGMA2512OHGMA31.512OHGMA4012OHGMA5012OHGMA6312OHGMA7112OHGMA8012OHGMA9012OHGMA10012OLGMA12515.5OEFMA6.315.5OEFMA1015.5OEFMA1615.5OEFMA2015.5OEFMA2515.5OEFMA31.515.5OEFMA4015.5OEFMA5015.5OEFMA6315.5OHGMA7115.5OHGMA8015.5OHGMA9015.5OLGMA10017.5OHGMA6.317.5OHGMA1017.5OHGMA161 7.5OHGMA2017.5OHGMA2517.5OHGMA31.517.5OHGMA4017.5OHGMA5017.5OHGMA6317.5OHGMA8024OEGMA6.324OEGMA1024OEGMA1624OEGMA2024OEGMA2524OEGMA31.524OEGMA4024OEGMA50

3.63.63.63.63.63.63.63.63.63.63.63.63.63.63.63.63.63.63.63.63.67.27.27.27.27.27.27.212121212121212121212121212121212121212121212121212

15.515.515.515.515.515.515.515.515.515.515.515.515.517.517.517.517.517.517.517.517.517.517.52424242424242424

6.310162025

31.5405063801001251602006380100125160200250801001121001251401606.310162025

31.540506371806.310162025

31.54050637180901001256.310162025

31.54050637180901006.310162025

31.5405063806.310162025

31.54050

505050505050505050505050505050505050505050454545454545454040404040404040404545404040404040404040404040404040404040404040404040404040353535353535353535352525252525252525

20783.642.533.926.517.615.411.57.606.034.023.022.211.7411.08.705.504.593.442.291.728.365.594.576.095.084.353.8152021410877.057.838.528.220.115.112.310.952021410877.057.838.528.222.617.016.613.412.28.757.0939218810178.755.336.929.522.117.817.715.511.610.066528213910074.749.836.526.019.515.560529015311984.555.944.734.0

F01

F02

F02

F01

F02

F01

F01

F02

F02

F01

F02

F02

F02

F02

254254254254254254254254254254254254254254254254254254254254

254254254254

359359359359254254254254254254254254254254254359359359359359359359359359359359359359359254254254254254254254254254359359359

359359359359359359359359359359359

359359359359359359359359

63.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.5

63.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.5

63.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.563.5

1.91.91.91.91.91.91.91.91.91.91.91.91.91.92.62.62.62.62.62.6

2.61.91.91.92.62.62.62.61.91.91.91.91.91.91.91.91.9

1.91.92.62.62.62.62.62.62.62.62.62.62.62.62.62.61.91.91.91.91.91.91.91.91.92.62.62.62.62.62.62.62.62.62.62.62.62.62.6

2.62.62.62.62.62.62.62.6

2.0X101

1.4X102

1.7X102

2.7X102

4.5X102

1.0X103

8.9X103

1.6X103

3.3X103

5.2X103

1.2X104

2.1X104

1.5X104

2.4X104

3.2X103

5.2X103

5.0X103

7.2X103

1.3X104

2.9X104

5.1X104

3.2X103

6.3X103

9.1X103

5.0X103

7.2X103

9.8X103

1.3X104

2.0X101

1.4X102

1.7X102

3.4X102

4.0X102

8.9X102

1.5X103

2.9X103

5.1X103

3.2X103

4.1X103

2.0X101

1.4X102

1.7X102

3.4X102

4.0X102

8.9X102

1.5X103

2.3X103

4.1X103

2.0X103

3.2X103

3.8X103

6.3X103

1.0X104

4.8X101

4.0X101

2.7X101

4.5X101

5.2X101

1.2X103

1.8X103

3.3X103

2.0X103

2.5X103

3.2X103

5.0X103

7.2X103

2.0X101

1.4X102

1.7X102

3.4X102

4.0X102

9.0X102

1.5X103

2.9X103

5.2X103

3.8X103

4.8X101

2.5X102

2.7X102

4.4X102

5.2X102

1.2X103

1.8X103

1.2X103

4.9X102

1.4X103

2.4X103

3.6X103

4.8X103

8.8X103

1.0X104

1.4X104

2.4X104

3.4X104

6.2X104

9.6X104

1.6X105

2.3X105

1.9X104

2.7X104

4.9X104

6.4X104

1.0X105

1.8X105

2.7X105

5.8X104

9.0X104

1.3X105

7.5X104

9.6X104

1.4X105

1.8X105

6.1X102

1.8X103

3.0X103

5.0X103

6.5X103

1.2X104

1.8X104

2.8X104

4.3X104

5.4X104

7.0X104

6.1X102

1.8X103

3.0X103

5.0X103

6.5X103

1.2X104

1.8X104

2.4X104

3.7X104

3.9X104

5.5X104

6.2X104

8.9X104

1.7X105

1.0X103

3.4X103

3.4X103

4.9X103

1.1X104

1.5X104

2.0X104

3.0X104

3.9X104

4.4X104

5.4X104

7.5X104

9.6X104

6.1X102

1.8X103

3.0X103

5.0X103

6.5X103

1.2X104

1.9X104

2.9X104

4.5X104

5.7X104

1.0X103

3.4X103

3.4X103

4.9X103

1.1X104

1.5X104

2.0X104

2.4X104

Table of ratings for British Standard Oil tight fuses 3.6 - 24kV

38


Selection of these fuse links has been based on a compromise between the following:

1 Withstand against magnetising inrush current is taken as 12 times full-load current for 0.1 second.

2 Withstand against 150% permissible overload current. Recommendations marked with an asterisk or dagger have the following significance:

* Limited to permissible overload of 130%† Permits use of a 12kV OHFMA 80A fuse with a 1000 kVA transformer where permissible overload does not exceed 130%.

3 For 6.6kV systems, 12kV fuse links are recommended where possible in the interests of standardisation.

4 Wherever possible, 254mm long fuse links are offered rather than equivalent 359mm types.

5 The above recommendations are not generally applicable to transformers feeding motor circuits with starting currents in excess of the transformer full load current. In this event, please consult Bussmann application engineers.

General guide to the selection of Oil tight Fuse Links for use in the primary circuit of three phase transformers

200

250

300/315

400

500

630

750/800

1000

1250

1600

OEFMA

OEFMA

OEFMA

OEFMA

OEFMA

OEFMA

OLGMA

OLGMA

-

-

63

80

100

125

160

200

250

250*

-

-

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

-

-

OEFMA

OEFMA

OEFMA

OEFMA

OEFMA

OEFMA

OHGMA

OHGMA

OHGMA

-

31.5

40

50

63

71

100

125

140

160*

-

12

12

12

12

12

7.2

7.2

7.2

7.2

-

01

-

02

-

03

-

04

05

-

-

OEFMA

OEFMA

OEFMA

OEFMA

OEFMA

OEFMA

OHFMA

OGFMA

OGFMA

OLGMA

25

25

31.5

40

50

63

80

90†

100

125*

12

12

12

12

12

12

12

12

12

12

OEFMA

OEFMA

OEFMA

OEFMA

OEFMA

OEFMA

OEFMA

OHGMA

OHGMA

OLGMA

16

20

25

31.5

40

50

63

71

90

100*

15.5

15.5

15.5

15.5

15.5

15.5

15.5

15.5

15.5

15.5

TransformerkVA Product

CodeRating kV

3.3kV

Transformer Priority Voltage

CurrentRating (A)

ProductCode

Rating kV

6.6kV

CurrentRating (A)

ProductCode

ESI 12-8Ref.

Rating kV

11kV

CurrentRating (A)

ProductCode

Rating kV

13.8kV

CurrentRating (A)


39

Current Limiting Fuse Links for use in Oil SwitchgearTime current characteristics for 7.2kV Oil Fuse Links, fuse type OEF



CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

40

Current Limiting Fuse Links for use in Oil SwitchgearTime current characteristics for 7.2kV Oil Fuse Links, fuse type OHG


CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S


41

Current Limiting Fuse Links for use in Oil SwitchgearTime current characteristics for 12kV Oil Fuse Links, fuse types OEF and OHF



CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

42

Current Limiting Fuse Links for use in Oil SwitchgearTime current characteristics for 12kV Oil Fuse Links, fuse types OHG and OLG


CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S


43

Current Limiting Fuse Links for use in Oil SwitchgearTime current characteristics for 15.5kV Oil Fuse Links, fuse types OEF, OHG and OLG



CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

44

Current Limiting Fuse Links for use in Oil SwitchgearTime current characteristics for 17.5kV Oil Fuse Links, fuse type OHG


CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S


45

Current Limiting Fuse Links for use in Oil SwitchgearTime current characteristics for 24kV Oil Fuse Links, fuse type OEG



CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

46

Current Limiting Fuse Links for use in Air


High Voltage fuse links for use in Air, comply with BS 2962-1 dimensions.

Available in voltage ranges 3.6 to 72.5kV.

Full range performance option available at12kV and 24kV.

Wide variety of fixing arrangements available.

Powerful pyrotechnic striker fitted.

E-rated North American dimension productsalso available.

Suitable for indoor or outdoor use.

British Standard Range

Bussmann Fuse Links for use in air

The Bussmann range of fuse links for use in air are available in British Standard form, BS 2692, Part 1 1975. A numberof options are available, including full range capability, and alternative fixing arrangements such as different types oftag, studs and collars etc. Details are available on application. Higher current ratings can be obtained by using fuse linksin parallel and special fixing arrangements are available for this purpose.

Bussmann Air Range - USA Dimensions

A comprehensive range of 'E' rated North American Dimension fuse links for industrial applications is also available.These are the latest technology full range fuse links in USA Industrial Standard 2 inch and 3 inch diameter ferrule style.Extended ratings in double barrel assemblies; striker, indicator and tag versions are also available.

47

Current Limiting Fuse links for use in Air


Selection Tables

Part Number *

CurrentRating

Length Diameter

ø

In

A

Un

kV

I1

kA mmm Ω

A2s

mm



JouleIntergral

(I2t)

VoltageRating



3.6ADFH*6.33.6ADFH*103.6ADFH*163.6ADFH*203.6ADFH*253.6ADFH*31.53.6ADFH*40

3.6ADGH*6.33.6ADGH*103.6ADGH*163.6ADGH*203.6ADGH*253.6ADGH*31.53.6ADGH*403.6ADGH*503.6ADGH*633.6ADGH*803.6ADGH*100

7.2ADFH*6.37.2ADFH*107.2ADFH*167.2ADFH*207.2ADFH*257.2ADFH*31.57.2ADFH*407.2ADFH*507.2ADFH*63

7.2AFFH*807.2AFFH*100

7.2BDGH*6.37.2BDGH*107.2BDGH*167.2BDGH*207.2BDGH*257.2BDGH*31.57.2BDGH*407.2BDGH*507.2BDGH*637.2BDGH*80

7.2BFGH*907.2BFGH*1007.2BFGH*1257.2BFGH*1407.2BFGH*160

12ADFH*6.312ADFH*1012ADFH*1612ADFH*2012ADFH*2512ADFH*31.5

12AFFH*4012AFFH*5012AFFH*63

12BDGH*6.312BDGH*1012BDGH*1612BDGH*2012BDGH*22.412BDGH*2512BDGH*31.512BDGH*35.512BDGH*4012BDGH*4512BDGH*50

12BFGH*5612BFGH*6312BFGH*7112BFGH*8012BFGH*9012BFGH*100

12AKGH*11212AKGH*125

3.63.63.63.63.63.63.6

3.63.63.63.63.63.63.63.63.63.63.6

7.27.27.27.27.27.27.27.27.2

7.27.2

7.27.27.27.27.27.27.27.27.27.2

7.27.27.27.27.2

121212121212

121212

1212121212121212121212

121212121212

1212

6.310162025

31.540

6.310162025

31.540506380100

6.310162025

31.5405063

80100

6.310162025

31.540506380

90100125140160

6.310162025

31.5

405063

6.3101620

22.425

31.535.5404550

5663718090100

112125

40404040404040

2525252525252525252525

202020202020202020

2020

40404040404040404040

4040404040

121212121212

121212

4040404040404040404040

404040404040

2020

20891.831.124.918.614.910.0

18577.158.644.036.924.613.99.917.054.943.96

20683.052.341.831.522.815.611.88.41

5.834.38

20683.052.341.831.422.815.711.87.485.82

4.724.053.152.572.35

35689.856.536.228.322.6

21.815.712.5

35613887.063.349.743.532.624.521.817.514.5

14.612.810.69.738.376.88

5.254.92

50.850.850.850.850.850.850.8

50.850.850.850.850.850.850.850.850.850.850.8

50.850.850.850.850.850.850.850.850.8

76.276.2

50.850.850.850.850.850.850.850.850.850.8

76.276.276.276.276.2

50.850.850.850.850.850.8

76.276.276.2

50.850.850.850.850.850.850.850.850.850.850.8

76.276.276.276.276.276.2

76.276.2

254254254254254254254

359359359359359359359359359359359

254254254254254254254254254

254254

359359359359359359359359359359

359359359359359

254254254254254254

254254254

359359359359359359359359359359359

359359359359359359

359359

4.8x101

2.3x102

7.2x101

1.1x102

2.0x102

3.1x102

7.1x102

4.8x101

3.1x102

5.5x102

9.8x102

1.3x102

2.9x102

8.0x102

1.6x103

3.1x103

6.3x103

9.8x103

4.8x101

7.2x101

7.2x101

1.1x102

2.0x102

3.8x102

8.0x102

1.3x103

2.5x103

6.3x103

9.8x103

5.1x101

1.0x102

8.4x101

1.1x102

2.0x102

4.6x102

8.0x102

1.6x103

3.6x103

6.4x103

1.0x104

1.3x104

1.6x104

2.4x104

2.9x104

4.8x101

1.3x102

1.3x102

3.1x102

5.1x102

8.0x102

1.2x103

2.0x103

3.1x103

5.2x101

6.4x101

6.4x101

1.6x102

2.4x102

3.2x102

5.8x102

9.0x102

1.2x103

1.8x103

2.5x103

2.9x103

3.4x103

4.6x103

6.1x103

8.1x103

1.1x103

1.5x104

2.1x104

7.2x102

2.3x103

1.0x103

1.5x103

2.1x103

2.8x103

7.7x103

7.2x102

4.7x103

8.3x103

1.5x104

1.5x103

3.5x103

9.6x103

1.9x104

3.7x104

7.6x104

1.2x105

5.6x102

9.4x102

8.6x102

1.5x103

2.6x103

4.8x103

1.1x104

1.4x104

2.9x104

6.9x104

1.4x105

6.0x102

1.3x103

1.0x103

1.5x103

2.6x103

5.8x103

1.1x104

1.8x104

4.3x104

7.0x104

1.4x105

1.9x105

1.9x105

3.3x105

4.0x105

5.0x102

2.0x103

2.0x103

3.5x103

6.1x103

9.0x103

1.5x104

2.5x104

3.9x104

5.0x102

1.0x103

1.0x103

1.8x103

3.0x103

3.8x103

6.5x103

1.1x104

1.5x104

2.3x104

3.2x104

3.7x104

4.5x104

6.3x104

7.8x104

1.0x105

1.4x105

1.9x105

2.4x105

1.51.51.51.51.51.51.5

2.12.12.12.12.12.12.12.12.12.12.1

1.51.51.51.51.51.51.51.51.5

2.82.8

2.12.12.12.12.12.12.12.12.12.1

4.24.24.24.24.2

1.51.51.51.51.51.5

2.82.82.8

2.12.12.12.12.12.12.12.12.12.12.1

4.24.24.24.24.24.2

4.34.3

Table of ratings for British Standard air fuses 3.6 - 72.5kV

*The last letter of the ordering code on these items describes the tag required, please refer to “How to order” (page 61)for an explanation.

48



Notes

a) The fifth letter or number of the part reference denotes the end fixing arrangement.

b) There are a wide variety of end terminations available, the most popular types, some of which have dimensional references to BS2692: Part 1, are:

A No Tags - Ferrule - BS Ref. FA3 - ADIHA / BS Ref. FA4 - AFIHA / BS Ref. FA5 - AFKHA B Offset Tag, single bolt fixingC & D Special Offset Tags, two hole fixings for Brush fuse switch equipment, BS Ref. TA3.F & O Offset Tags two bolt fixing.49 Centre Tags, single bolt fixing for use in Fused End Boxes.6 Tags to BS2692-1 ref. TA3

Selection Tables

Fullrange12FFGN491012FFGN491612FFGN492012FFGN492512FFGN4931.512FFGN494012FFGN495012FFGN496315.5BDGH*6.315.5BDGH*1015.5BDGH*1615.5BDGH*2015.5BDGH*2515.5BDGH*31.515.5BDGH*4015.5BFGH*5015.5BFGH*6315.5BFGH*8015.5BFGH*8524ADIHA6.324ADIHA1024ADIHA1624ADIHA2024ADIHA2524ADIHA31.524AFIHA4024AFIHA5024AFIHA6324AFIHA8024AFIHA90Fullrange24FDIHA3.1524FDIHA524FDIHA6.324FDIHA1024FDIHA1624FDIHA2024FDIHA31.536ADIHA3.1536ADIHA536ADIHA6.336ADIHA1036ADIHA1636ADIHA2036ADIHA2536ADIHA31.536AFIHA4036AFKHA5036AFKHA6336AFKHA7172.5AFKHA3.1572.5AFKHA572.5AFKHA6.372.5AFKHA1072.5AFKHA1672.5AFKHA2072.5AFKHA2572.5AFKHA31.572.5AFKHA40

1212121212121212

15.515.515.515.515.515.515.515.515.515.515.515.515.515.515.515.515.52424242424

24242424242424363636363636363636363636

72.572.572.572.572.572.572.572.572.5

10162025

31.5405063

6.310162025

31.540506380856.310162025

31.54050638090

3.155

6.3101620

31.53.15

56.310162025

31.540506371

3.155

6.310162025

31.540

4040404040404040

20202020202020202020201212121212121616161616

35.535.535.535.535.535.535.5161616161616161625252525121212121212121212

90.669.145.636.525.419.714.712.6

48515899.174.654.238.227.222.215.59.739.4552017312910482.766.246.533.223.517.914.7

89341241220510388.256.0146097378137819014211581.561.554.540.632.542301600120051938924919513092.7

76.276.276.276.276.276.276.276.276.250.850.850.850.850.850.850.876.276.276.276.250.850.850.850.850.850.876.276.276.276.276.2

50.850.850.850.850.850.850.850.850.850.850.850.850.850.850.8

76.2

76.276.276.276.276.276.276.276.276.276.276.276.2

359359359359359359359359359359359359359359359359359359359359565565565565565565565565565565565

565565565565565565565565565565565565565565565

565914914914

914914914914914914914914914

2.7x102

4.2x102

9.5x102

1.6x103

3.1x103

4.7x103

8.4x103

6.3x103

4.8x101

7.2x101

7.2x101

1.3x102

2.4x102

4.9x102

9.6x102

1.6x103

3.2x103

7.2x103

7.2x103

7.9x101

7.2x101

1.3x102

2.0x102

3.1x102

4.9x102

1.2x103

2.4x103

3.2x103

5.5x103

7.2x103

3.1x101

5.9x101

5.9x101

2.7x102

1.1x103

1.3x103

5.3x103

2.0x101

4.4x101

7.1x101

7.2x101

1.1x102

2.0x102

3.1x102

6.1x102

1.2x103

1.9x103

3.5x103

5.5x103

1.4x101

1.1x102

1.9x102

7.2x101

1.3x102

3.1x102

5.1x102

1.0x103

2.0x103

4.7x103

6.1x103

1.1x104

1.5x104

2.5x104

3.8x104

5.6x104

5.4x104

8.5x102

1.2x103

1.2x103

2.8x103

4.3x103

7.0x103

1.2x104

3.2x104

4.6x104

1.0x105

1.0x105

8.5x102

1.1x102

1.7x103

2.8x103

4.1x103

6.8x103

1.1x104

2.2x104

5.2x104

8.2x104

1.0x105

9.8x101

4.5x102

4.5x102

2.1x103

8.3x103

4.8x103

2.0x104

2.5x102

5.5x102

8.9x102

1.1x103

1.7x103

2.8x103

4.5x103

8.1x103

1.9x104

2.8x104

5.0x104

8.2x104

1.8x102

1.4x103

2.5x103

9.3x102

1.7x103

4.0x103

6.6x103

1.3x104

2.6x104

4.14.14.14.14.14.14.14.14.12.12.12.12.12.12.12.14.24.24.24.23.03.03.03.03.03.06.16.16.16.16.1

3.03.03.03.03.03.03.03.03.03.03.03.03.03.03.0

6.1

9.79.79.79.79.79.79.79.79.79.79.79.7

Part Number

CurrentRating

Length Diameter

ø

In

A

Un

kV

I1

kA mmm Ω

A2s

mm



JouleIntergral

(I2t)

VoltageRating



Table of ratings for British Standard air fuses 3.6 - 72.5kV

49

Selection of these fuse links has been based on a compromise between the following:

1 The fuse links should withstand transformer magnetising inrush currents, taken as 12 times full load current for 0.1 seconds.

2 The fuse links should discriminate with the highest rating of secondary fuse link.

3 The fuse links should withstand periodic over-currents of up to 150% of transformer full load current.

4 The fuse links should operate reasonably quickly in the event of a transformer inter-turn fault or a fault in the secondary terminal zone of the transformer.

Notes

a) The above recommendations are not generally applicable to transformers feeding motor circuits with starting currents in excess of the rated current of the fuse. In this event, please consult Bussmann.

b) For 6.6kV transformers, 12kV Fuse Links are recommended, where the required current rating is available.

c) Where the transformer is not subjected to periodic over-currents, a lower fuse rating may be suitable, fuse ratings marked thus‚ ‘3’ are only suitable for use with the transformer sizes quoted, where significant over loading does not occur.

Fuse links for use in transformers with primary voltages of 3.3kV, 22kV and 33kV are available, please consultBussmann application engineers for further details and a recommendation.

General guide to the selection of Air Fuse Links for use in the primary circuit of three phase transformers



200

250

300/315

400

500

630

750/800

1000

1250

1500

BDG

BDG

BDG

BFG

BFG

BFG

BFG

BFG

BFG

BFG

31.5

40

50

63

80

90

125

140

160

1603

12

12

12

12

12

12

7.2

7.2

7.2

7.2

BDG

BDG

BDG

BDG

BDG

BFG

BFG

BFG

AKG

AKG

20

25

31.5

40

50

63

71

90

112

1253

12

12

12

12

12

12

12

12

12

12

BDG

BDG

BDG

BDG

BFG

BFG

BFG

BFG

BFG

-

20

25

31.5

40

50

63

63

85

853

-

15.5

15.5

15.5

15.5

15.5

15.5

15.5

15.5

15.5

-

TransformerkVA Fuse Type Rating kV

6.6kV

Transformer Priority Voltage

Current Rating(A)

Fuse Type Rating kV

11kV

Current Rating(A)

Fuse Type Rating kV

13.8kV

Current Rating(A)

50

Time current characteristics for 7.2kV Air Fuse Links, fuse types BDG and BFG



CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S


51

Time current characteristics for 12kV Air Fuse Links, fuse types BDG, BFG and AKG




CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

52

Time current characteristics for 12kV Air Fuse Links, fuse type FFGN



CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S


53

Time current characteristics for 24kV Air Fuse Links, fuse types ADI and AFI




CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

54

Time current characteristics for 24kV Air Fuse Links, fuse type FDI



CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S


55

Current Limiting Fuse Links for use in AirTime current characteristics for 36kV Air Fuse Links, fuse types ADI, AFI and AFK



CU

RV

ES

RE

LATE TO

ME

AN

PR

E-A

RC

ING

TIME

WITH

TOLE

RA

NC

E +

10% O

N C

UR

RE

NT

RM

S S

YM

ME

TICA

L PR

OS

PE

CTIV

E C

UR

RE

NT IN

AM

PE

RE

S

56


Dimensions (mm)

CODE

ADFHCADGHCBDGHCAFFHDAKGHDBFGHD

A

356461461356461461

B

314419419314419419

C

254359359254359359

DØ

515151767676

CODE

ADGHABDGHAADIHAFDIHAAKGHABFGHAAFIHAAKKHA

A

359359565565359359565914

DØ

5151515176767676

CODE

ADFHFADGHFBDGHFADIHFFDIHFAFFHFAKGHFBFGHFAFIHFAFKHF

A

3564614616666663564614616661016

C

254359359565565254359359565914

DØ

51515151517676767676

B

314419419624624314419419624974

10 Min - 16 Max striker travel after operation if fitted



C & D Tags

A Tags (ferrule)

F Tags


57

Liquid Fuse Links

Replacement liquid fuse links sizes 1, 2and 3.

Wide range of voltages 6.6kV up to75kV.

Current ratings from 2 up to 75 amps(including‚ ‘E’ rated option).

Standard and slow blow elementsavailable.

Rewiring kits available for sizes 2 and 3.

Size 1 full range cartridge fuse availabletype FDSH48.

Bussmann Liquid Fuse Links

Bussmann manufacture a range of liquid filled fuse links for use outdoors, on pole mounted equipment. Theyprovide a simple yet effective means of protection in distribution applications. However, it should be noted thatliquid filled fuse links were first put into service before HV fuse standards were introduced and are therefore notcovered by any present standard. They are principally for replacement purposes on existing systems.

General Description

The fuse body is of clear toughened glass to allow visual identification of a blown fuse element. Plated contactferrules are hermetically sealed onto each end of the tube. The replacement fuse element assembly is held undertension within the tube, which is filled with fuse arc quenching liquid. (A data sheet on this product is available,please contact Bussmann for details.) The upper end of the fuse link is sealed by a tin diaphragm. This is designedto rupture during operation, permitting venting of arc products.

The fuse link is sealed against the weather and has an indefinite service life, under normal conditions. The elementassembly is enclosed by a fibre sleeve. This assists in the process of arc extinguishing during operation.

Operation

When a fuse link operates under fault conditions, the element and connecting strain wire melt, the tension springthen pulls the lower contact and element assembly through the arc quenching liquid to the bottom of the fuse linkassembly. A specially shaped liquid director cone, fitted on the assembly, creates a turbulence in the liquid toensure rapid dispersal of arc products.

Replacement of the Fuse Element

Element replacement kits, complete with instructions, are available from Bussmann. We also advise that a minimumof one replacement kit be purchased with each order.

Note that Size 1 fuse links do not have replaceable elements.


58

Liquid Fuse Links

Selection Tables

The part number would be 33L3S25 meaning a fuse with a rated voltage of 33kV; L denoting a Liquid typefuse; 3 denoting size; S denoting slow blow and 25 indicating rated current in Amps.


Selection Table Dimensions

Ordering codes

33

-

-

-

-

Rating VoltageLiquid FuseDesignation SIze Characteristic Current

Meaning

Symbol

-

L

-

-

-

-

-

3

-

-

-

-

-

S

-

-

-

-

-

25

Fuse is rated at 33kV for use on 33kV systems

Denotes a Liquid fuse link

Indicates size

Indicates characteristics (F = standard; S = slow blow)

Current rating of the fuse link in Amps

1

2

2

3

3

Size Type Current Rating (Amps)

Table of Ratings

Standard

Standard

Slow

Standard

Slow

2E 3E 5E 7E 10E 20E

3 5 10 15 20 25

5 10 15 20 25

3 5 10 15 20 25 30 40 50 60 75

5 10 15 20 25 30 40 50 60 75

SizekV A B C ØD

6.6

7.5

11/12

15/23

33

44

66

3

1

2

3

1

2

3

3

3

249

238

338

338

327

427

427

503

655

38.1

-

-

38.1

-

-

38.1

38.1

38.1

203

203

292

292

292

381

381

457

609

42.8

23.9

30.2

42.8

23.9

30.2

42.8

42.8

42.8

59

Fuse Clips

Bussmann Fuse Clips

To complement the range of tag fixings offered by Bussmann, a range of fuse clips. These are suitable for use withBritish Standard, DIN dimensioned and VT ferrule style fuse links. The BS and DIN clips are rated up to 200 Amps.They are designed to be fitted onto insulated studs or directly onto a busbar.

Selection Table


DIN fuse links to 43 625

Voltage transformer and auxiliarytype fuse links

British standard fuse links

50.8mm (2”) dia

63.5mm (2.5”) dia

76.2mm (3”) dia

270303 or A3354745

A3354705

A3354710

A3354720

A3354730

Fuse Type Clip Reference

VT Fuse Clips for 25.4mm diameter.

DIN Standard Clips for ‘F’ and‚ ‘S’range fuse links.

BS Mounting Clips suitable for 50.8mmand 76.2mm Oil, Air and Motor FuseLinks up to 200A.

60

Fuse Clips

Dimensions (mm)

Material: Nickel silver alloyOrder as part number: A3354705

Dimensions (mm)

Material: Nickel plated copperOrder as part number: 270303

Dimensions (mm)

Suitable for use with all Bussmann DIN fuse links.Also suitable for use with other Bussmann fuselinks having type‚ ‘J’ end tags, to DIN 43 625,with maximum current rating of 200 amps.

Material: Nickel plated copperOrder as part number:

A3354745 for 45mm dia.A3354710 for 50.8mm dia.A3354720 for 63.5 mm dia.A3354730 for 76.2 mm dia.


Clips for 25.4mm VT fuse links

Clips for DIN fuse links

Clips for British Standard and DIN style fuse links

Dimensions (mm)

Fusedia. (D)

H W C

45

50.8

63.5

76.2

86

86

95

100

112

112

124

140

48

48

54

58

61

How to Order - Parts Referencing System

Introduction

Bussmann employ a common referencing system for all their current limiting HV powder fuses. Liquid Fuse Links, CAV fuse links,and fuse clips have their own reference. Please refer to the appropriate section for the applicable code reference.

This reference number should be quoted in all correspondence. For example, when ordering orprogressing an order or when making a technical enquiry.

kV 2nd Letter Barrel

Diameter (mm)

M = 20,6

B = 25,4

D = 50,8

E, H, L = 63,5

F, I, K = 76,2

X = 88

3rd Letter Barrel

Length (mm)

U = 86

W = 142

O = 192

C = 195

D = 203

F = 254

L = 292

G = 359

N = 403

M = 442

Q = 537

I = 565

K = 914

4th Letter Striker (mm)

S = Striker toDIN43625, form C, 50N

E= Striker toDIN43625, 80N

H or M = Striker toBS2692-1

N = None fitted

5th/6th letter and or digit - termination or fixing

A = No Tags. Ferrule diameter as the 2nd letter

B = Offset tag, single boltfixing

C and D = Tags toBS2692-1

F = Offset tag, double bolt fixing

J = Ferrule to DIN 43625

O = Tags to BS2692-1

6 = Tags to BS2692-1

22 = 5/16-BSW stud one end only

02/03 double and triple barrel fuse link

F2/F3 double and triple barrel varients

Amps A

A / B / D / N

V or W

F

O

S

T

fuse links for usein air

fuse links primarilyfor use in motorcircuits

fuse links with FullRangecharacteristics

fuse links sealedfor use in oilswitches

DIN Range

DIN Outdoor Range

Note:Most of these fuse types are suitable for outdoor use, refer toBussmann application engineers for further information.A variety of alternative tag arrangements are also available,details on request from Bussmann application engineers.

Part referencing system for current limiting fuse links

1st Letter General Type


62


Ordering Key

Part number 12BDGHC50 represents a fuse rated at 12 kV for use in Air (B), with a body diameter of 50.8mm (D), a barrellength of 359mm (G), a striker to BS2692-1 (H), a tag arrangement to BS2692-1 (C) and an Amp rating of 50A

1 > Voltage 5 > Striker information* * H or M = Pyrotechnic striker

2 > Type designation letter 6 > Tag information S = Spring striker 50N

3 > Barrel diameter 7 > Rated current E = Spring striker 80N

4 > Barrel length N = No striker fitted

Ordering code information Type designation

Rated voltage of the fuse link 12 · · · · · ·

Type of fuse link · B · · · · ·

Body diameter · · D · · · ·

Body length · · · G · · ·

Type of striker · · · · H · ·

Type of tag · · · · · C ·

Current rating · · · · · · 50

Complete Part Number 12 B D G H C 50

Rated voltage of the fuse in kV

The type of fuse link given by a single letter

Diameter of the fuse link barrel in mm denoted by a letter

Length of the fuse link barrel denoted by a letter

Striker information: type of striker (if fitted) denoted by a letter*

Tag information: type, if fitted, denoted by a letter

Current rating of the fuse link given in Amperes

MeaningSymbol

1 2 3 4 5 6 7

xx

xx

xx

x


For more information visit our website www.bussmann.com 63


Code ReferenceDescription Page No.

FFMSJ DIN 'F' Range (Full range fuse) 3

NBUN* Voltage and Auxiliary Transformer fuse link 29

OBCN* Voltage and Auxiliary Transformer fuse link 29

OBFN* Voltage and Auxiliary Transformer fuse link 29

OBGN* Voltage and Auxiliary Transformer fuse link 29

OBWN* Voltage and Auxiliary Transformer fuse link 29

OEFMA Current Limiting fuse link for use in oil switchgear 36

OEGMA Current Limiting fuse link for use in oil switchgear 36

OHFMA Current Limiting fuse link for use in oil switchgear 36

OHGMA Current Limiting fuse link for use in oil switchgear 36

OLGMA Current Limiting fuse link for use in oil switchgear 36

SDLSJ DIN 'S' Range 3

SDMSJ DIN 'S' Range 3

SDOSJ DIN 'S' Range 3

SFLSJ DIN 'S' Range 3

SFMSJ DIN 'S' Range 3

SFQSJ DIN 'S' Range 3

SKLSJ DIN 'S' Range 3

SKMSJ DIN 'S' Range 3

VFNHA Motor fuse link - USA dimensions 17

VKNHA Motor fuse link - USA dimensions 17

VKNHK Motor fuse link - USA dimensions 17

WDFHO Motor fuse link - British dimensions 17

WDLSJ Motor fuse link - DIN Dimensions 17

WDOH6 Motor fuse link - British dimensions 17

WDOSJ Motor fuse link - DIN Dimensions 17

WFFHO Motor fuse link - British dimensions 17

WFGHO Motor fuse link - British dimensions 17

WFLSJ Motor fuse link - DIN Dimensions 17

WFMSJ Motor fuse link - DIN Dimensions 17

WFNHO Motor fuse link - British dimensions 17

WFOH6 Motor fuse link - British dimensions 17

WFOSJ Motor fuse link - DIN Dimensions 17

WJON6 Motor fuse link - British dimensions 17

WKFHO Motor fuse link - British dimensions 17

WKGHO Motor fuse link - British dimensions 17

WKLSJ Motor fuse link - DIN Dimensions 17

* Tag Variations

64



WKMSJ Motor fuse link - DIN Dimensions 17

WKNHO Motor fuse link - British dimensions 17

2703 Fuse clip for DIN dimension fuse links 59

CAV Voltage and Auxiliary Transformer fuse link 35

CAVH Voltage and Auxiliary Transformer fuse link 35

L1,L2,L3,LF Liquid fuse link (standard blow) 57

L1,L2,L3,LS Liquid fuse link (slow blow) 57

A3354705 Fuse clip for VT fuse links 59

A3354710 Fuse clip for British Standard and DIN 50.8mm dia 59

A3354720 Fuse clip for British Standard and DIN 63.5mm dia 59

A3354730 Fuse clip for British Standard and DIN 76.2mm 59

A3354745 Fuse clip for British Standard and DIN 45mm dia 59

ABCNA Voltage and Auxiliary Transformer fuse link, plain ferrule 28

ABCN22 Voltage and Auxiliary Transformer fuse link, BSW 5/18" thread 28

ABFNA Voltage and Auxiliary Transformer fuse link, plain ferrule 28

ABGNA Voltage and Auxiliary Transformer fuse link, plain ferrule 28

ABWNA Voltage and Auxiliary Transformer fuse link, plain ferrule 28

ABWN22 Voltage and Auxiliary Transformer fuse link, BSW 5/18" thread 28

ABWNA Voltage and Auxiliary Transformer fuse link, US standard 28

ADFH* Current limiting fuse link for use in air 46

ADGH* Current limiting fuse link for use in air 46

ADIH* Current limiting fuse link for use in air 46

ADLSJ DIN 'A' range 3

ADOSJ DIN 'A' range 3

AFFH* Current limiting fuse link for use in air 46

AFIH* Current limiting fuse link for use in air 46

AFKH* Current limiting fuse link for use in air 46

AILSJ DIN 'A' range, with striker 3

AIMSJ DIN 'A' range, with striker 3

AKGH* Current limiting fuse link for use in air 46

AMWNA Voltage and Auxiliary Transformer fuse link, US standard 46

BDGH* Currrent limiting fuse link for use in air 46

BFGH* Current limiting fuse link for use in air 46

FDIH* Current limiting fuse link for use in air (full range) 46

FDLSJ DIN 'F' Range (Full range fuse) 3

FDMSJ DIN 'F' Range (Full range fuse) 3

FFGN49 Current limiting fuse link for use in air (full range) 46

FFLSJ DIN 'F' Range (Full range fuse) 3

FXLSJ DIN 'F' Range (Full range fuse) 3

* Tag Variations

high voltage fuse technology - cable joints

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