motor starter protection

161©2005 Cooper Bussmann

Motor Starter Protection

Motor controllers are highly susceptible to damage due to short circuits. Evenfor moderate or low-level faults, extensive damage may occur if the short circuit protective device is not carefully selected. The most vulnerable partsare the starter contacts and heater elements. Fault currents can weld the contacts and cause the heater elements to vaporize or be critically damaged.The metalized vapors from such damage then can initiate further starterdestruction in the enclosure.

Often, after a fault, no apparent damage is visible (i.e., the contacts are notwelded and the heater elements are not burnt up). However, the heat energyfrom the fault may have caused too high of a heat excursion for the heaterelements or overload relay sensing element to withstand, with the result beinga permanently altered and degradated level of overload protection.

The question is, what can be done to obtain the highest degree of short circuitprotection for motor controllers? The solution is to use short circuit protectivedevices that are current-limiting and size them as close as practical. A current-limiting fuse can cut off the short-circuit current before it reaches damaginglevels. Even for potentially high short-circuit currents, the quick clearing of thefuse can limit the current passed through the starter to safe levels. Dual-element Class RK5 and RK1 fuses are recommended since they can be sizedat 125% of the motor full-load current, rather than 300% sizing for non-time-delay fuses.

The branch circuit protective device size cannot exceed the maximum ratingshown on equipment labels or controller manufacturer’s tables. 430.53requires observance of the requirements of 430.52 plus, for circuits under430.53(C) the motor running overload device and controller must be approvedfor group installation with a specified maximum rating protective device. Under430.54 for multi-motor and combination-load equipment, the rating of thebranch circuit protective device cannot exceed the rating marked on the equipment. Therefore, be sure to check labels, controller overload relay tables,equipment nameplates, etc. In no case can the manufacturer’s specified ratingbe exceeded. This would constitute a violation of NEC® 110.3(B). When thelabel, table, etc. is marked with a “Maximum Fuse Amp Rating” rather thanmarked with a “Maximum Overcurrent Device” this then means only fuses canbe used for the branch circuit protective device.

Achieving Short Circuit Protection

In order to properly select an overcurrent device for a motor starter, four areasrequire particular attention:

1. Withstand rating of the contactor.

2. Wire Damage,

3. Cross-over point of the fuse and relay curve,

4. Motor Damage.

Please refer to the following graph.

Contactor Withstand Rating

The first area of concern is the withstand rating of the contactor. In order toprevent damage to the contactor, the maximum peak let-through current (Ip )and maximum clearing energy (I2t) (amps2 seconds) of the fuse must be lessthan the equivalent ratings for the contactor. The clearing time and let-throughcharacteristics of the fuse must be considered when verifying adequate protection of the contactor.

Wire Damage

Secondly, motor circuit conductors have a withstand rating that must not beexceeded. If the overcurrent protective device is not capable of limiting theshort-circuit current to a value below the wire with-stand, the wire may bedamaged, or destroyed.

Cross Over Point

Thirdly, the cross-over point (I c ) is the point where the fuse curve intersectsthe overload relay curve. For current levels less than the cross-over point theoverload relay opens the circuit. For current values greater than the cross-overpoint the fuses open the circuit and prevent thermal damage to the overloadrelay, contacts, and the motor circuit. This point of intersection should beapproximately 7-10 times Ie, where Ie is rated current. Ideally the fuse shouldallow the overload relay to function under overload conditions, and operatebefore the overcurrent reaches the contactor’s breaking capacity.

Motor Damage

Finally, all motors have an associated motor damage curve. Single phasing,overworking, and locked rotor conditions are just a few of the situations thatcause excessive currents in motor circuits. Excessive currents cause motorsto overheat, which in turn causes the motor winding insulation to deteriorateand ultimately fail. Overload relays and dual-element, time-delay fuses, aredesigned to open the motor circuit before current levels reach the motor damage curve.

IEC and UL Standards for Allowable Damage

IEC 947-4-1 and UL508E differentiate between two different types of coordination, or damage levels.

— Type “1” Considerable damage, requiring replacement. No external damage to theenclosure. short circuit protective devices interrupt intermediate to high short-circuit currents which exceed the withstand rating of the motor starter. A non-current- limiting device will interrupt these high currents, but this type of damagewill typically result.

— Type “2” “No Damage” is allowed to either the contactor or overload relay. Lightcontact welding is allowed, but must be easily separable. (Note: If access is notpossible and the contacts cannot be separated, Type “2” protection cannot beachieved.) This level of protection typically can only be provided by a current-limiting device, that is, one which limits the available short-circuit current to a significantly lower value.


Graphic Explanation

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Motor and Motor Circuit Damage Protection10 H.P @ 460V

Legend:

Motor Start

Overload Relay

Motor Damage

12 AWG Wire Damage

Thermal Withstand Limit

Contactor Breaking CurrentContactor Withstand 30Ie

2

162 ©2005 Cooper Bussmann

Five Choices — 1 Solution

IEC Motor Starter Protection

Five methods of providing motor starter overcurrent protection are delineatedin the five examples that follow. In noting the levels of protection provided byeach method, it becomes apparent that the use of dual-element, time-delayfuses (Example 5) is the only one that gives protection at all levels whether itbe “Type 2,” “Back-up Overload,” “Back-up Single-Phase,” etc.

These examples are based on a typical motor circuit consisting of an IECStarter, and a 10 HP, 460V motor (Service factor = 1.15). These “Level ofProtection” examples reflect the branch circuit protective device operating incombination with the IEC starter overload relays sized at approximately 115%of motor FLA and contactor Ie = 18 amps.


Graphic Explanation

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Motor Circuit Protector(700% FLA)

Legend:

Overload Relay

Motor Damage

12 AWG Wire Damage



2

CrossoverPointIc = 5.5 ≈ Ie

Motor Start

MCP (700%)

Level of Protection:Type "2" Single-Phase Back-up Single-Phase OverloadBack-up Overload Meets 110.10 Meets 430.52

NoYesNo YesNoNoYes

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Fast-Acting Fuse(300% FLA)

Legend:

Overload Relay

Motor Damage

12 AWG Wire Damage



2

CrossoverPointIc = 10 ≈ Ie

Motor Start

Fast-Acting Fuse 45A


YesYesNoYesNoYesYes

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Molded Case Circuit Breaker(250% FLA)

Legend:

Overload Relay

Motor Damage

12 AWG Wire Damage



2

Motor Start

MCCB 40A


NoYesNo YesNoNoYes

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10 100

1,00

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CURRENT IN AMPERES

Dual-Element, Time-Delay Fuse(175% FLA)

Legend:

Overload Relay

Motor Damage

12 AWG Wire Damage



2

CrossoverPointIc = 10 Ie

Motor Start

Low-Peak, Dual-Element, Time-Delay 25A


YesYesNoYesNoYesYes

X

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10 100

1,00

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Dual-Element, Time-Delay Fuse(125% ) - Class RK1 or J

Legend:

Overload Relay

Motor Damage

12 AWG Wire Damage



2

CrossoverPointIc = 8 Ie

Motor Start

Low-Peak, Dual-Element, Time-Delay 17 A


YesYesYesYesYesYesYes

1 2

X

Example 3

Example 4

Example 5

Example 1

Example 2


Motor Controller Marking

A new 2005 NEC® 430.8 requirement is that most motor controllers bemarked with their short-circuit current rating (SCCR). Controller manufacturershave the discretion to test, list, and mark their controllers at the standard faultlevels of UL 508 (shown in the table below) or the manufacturer can choose totest, list and mark for higher levels of short-circuit currents. A controller with amarked SCCR makes it easier to establish the short-circuit current rating foran industrial control panel as is now required in NEC® 409.110.

Motor Controller Protection

The diagram below shows a Size 2, combination motor controller supplying a460 volt, 3Ø, 20Hp motor. The short-circuit withstand of this and other motorcontrollers are established so that they may be properly protected from shortcircuit damage.

Short Circuit Protection of Motor Controller

A paragraph in NEC® 430.52 states:

Where maximum branch circuit short circuit and ground fault protectivedevice ratings are shown in the manufacturer’s overload relay table for usewith a motor controller or are otherwise marked on the equipment, theyshall not be exceeded even if higher values are allowed as shown above.**

** “Above” refers to other portions of 430-52 not shown here.

This paragraph means that the branch circuit overcurrent protection for overload relays in motor controllers must be no greater than the maximumsize as shown in the manufacturer’s overload relay table. These maximumbranch circuit sizes must be observed even though other portions of 430.52allow larger sizing of branch circuit overcurrent protection.

The reason for this maximum overcurrent device size is to provide short circuitprotection for the overload relays and motor controller.


Low Voltage Motor Controllers

M

Typical Size 2 ControllerLow-PeakDual-Element,Time-Delay Fuse

20HP3Ø, 460V27 F.L.A.

40,000 RMS Symmetrical Available3Ø, 460V

There are several independent organizations engaged in regular testing ofmotor controllers under short circuit conditions. One of these, Underwriter’sLaboratories, tests controllers rated one horsepower or less and 300V or lesswith 1000 amps short-circuit current available to the controller test circuit.Controllers rated 50Hp or less are tested with 5000 amps available and controllers rated above 50Hp to 200Hp are tested with 10,000 amps available.See the table below for these values.*

Motor Controller Test Short CircuitHP Rating Current Available*

1Hp or less and 300V or less 1000A50Hp or less 5000AGreater than 50Hp to 200Hp 10,000A201Hp to 400Hp 18,000A401Hp to 600Hp 30,000A601Hp to 900Hp 42,000A901Hp to 1600Hp 85,000A

* From Industrial Control Equipment, UL508.

It should be noted that these are basic short circuit requirements. Higher, combination ratings are attainable if tested to an applicable standard.However, damage is usually allowed.

430.52 of the National Electrical Code® allows dual-element, time-delay fusesand other overcurrent protective devices to be sized for branch circuit protection (short circuit protection only). Controller manufacturers often affixlabels to the inside of the motor starter cover which recommend the maximumsize fuse for each overload relay size.


UL has developed a short circuit test procedure designed to verify that motorcontrollers will not be a safety hazard and will not cause a fire.

Compliance to the standard allows deformation of the enclosure, but the doormust not be blown open and it must be possible to open the door after thetest. In the standard short circuit tests, the contacts must not disintegrate, butwelding of the contacts is considered acceptable. Tests allow the overloadrelay to be dam-aged with burnout of the current element completely accept-able. For short circuit ratings in excess of the standard levels listed in UL508,the damage allowed is even more severe. Welding or complete disintegrationof contacts is acceptable and complete burnout of the overload relay isallowed. Therefore, a user cannot be certain that the motor starter will not bedamaged just because it has been UL Listed for use with a specific branch circuit protective device. UL tests are for safety, with the doors closed but doallow a significant amount of damage as long as it is contained within theenclosure.

In order to properly select a branch circuit protective device that not only provides motor branch circuit protection, but also protects the circuit compo-nents from damage, the designer must look beyond mere safety standards.Coordination (protection) of the branch circuit protective device and the motorstarter is necessary to insure that there will be no damage or danger to eitherthe starter or the surrounding equipment. There is an “Outline of Investigation,”(UL508E) and an IEC (International Electrotechnical Commission) StandardIEC Publication 60947, “Low Voltage Switchgear and Control, Part 4-1:Contactors and Motor Starters,” that offer guidance in evaluating the level ofdamage likely to occur during a short circuit with various branch circuit protective devices. These standards address the coordination (protection)between the branch circuit protective device and the motor starter. They provide a method to measure the performance of these devices should a shortcircuit occur. They define two levels of protection (coordination) for the motorstarter:Type 1. Considerable damage to the contactor and overload relay

is acceptable. Replacement of components or a

completely new starter may be needed. There must be no

discharge of parts beyond the enclosure.

Type 2. No damage is allowed to either the contactor or over-load

relay. Light contact welding is allowed, but must be easily

separable.

Where Type 2 protection is desired, the controller manufacturer must verifythat Type 2 protection can be achieved by using a specified protective device.US manufacturers have both their NEMA and IEC motor controllers verified tomeet the Type 2 requirements outlined in UL508E and IEC 60947-4. As of thiswriting only current-limiting devices have been able to provide the current limitation necessary to provide verified Type 2 protection. In many cases,Class J, Class RK1, or Class CC fuses are required, because Class RK5fuses and circuit breakers aren’t fast enough under short circuit conditions toprovide Type 2 protection.

Tables: Type 2 Motor Starter/Cooper Bussmann Fuses

On the following pages are motor starters of several manufacturers that havebeen verified by testing for Type 2 protection using the fuses denoted. Theseare maximum fuse sizes; for specific applications, it may be desirable to sizecloser. In some cases, the fuse type/amp rating shown is greater than thatpermitted for branch circuit protection for a single motor per 430.52 (footnoted); however, the size may be applicable for group motor protectionapplications. In a few cases, the fuse type/amp rating may be too small fortypical motor starting applications (footnoted). It is recommended to use thesefuse types/amp ratings in conjunction with the fuse type/sizing philosophy(backup motor overload, optimal or maximum branch circuit protection - seeMotor Protection Table explanation in Motor Circuit Protection Section of thisbook.) This data was obtained from the manufacturers or their web sites.

The following pages have Fuse/Starter (IEC & NEMA) Type 2 “no damage”Tables for:


Type 1 Versus Type 2 Protection

Photo 1 Before Test: MCP as motorbranch circuit protection for 10HP, IECStarter with 22,000 amps available at 480V.

Photo 2: Same as Photo 1, but duringthe test with MCP as the motor branchcircuit protection. The heater elementsvaporized and the contacts were severely welded. Extensive starterrepair or total starter replacementwould be required. This level of damage is permissible by UL508 orUL508E/IEC60947-4-1 Type 1 protection.

Photo 3 During Test: same test circuitand same type starter during short circuit interruption. The difference iscurrent-limiting fuses provide the motorbranch circuit protection. This illustrates the level of protectionrequired by UL508E and IEC 60947-4-1 for Type 2 “no damage” protection.The heaters and overload relays maintained calibration, which isextremely important to retain circuitoverload protection. This starter couldbe put back into service without anyrepair.

General Electric 165 to 169

Rockwell Automation/Allen-Bradley 170 to 171

Square D Co. 172 to 175

Siemens 176 to 177

Cutler-Hammer 178 to 180


Motor Controller & Fuse Selection For Type 2 Protection

General Electric Company — IEC (UL & CSA Verified)

230 Volt, Three-Phase MotorsMAX FUSE

HP (FLC) CONTACTOR OLR LPJ_SPCLASS J

0.5 (2.2) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1J 40.75 (3.2) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1K 8†1 (4.2) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1L 101.5 (6.0) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1L 102 (6.8) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1M 123 (9.6) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1N 205 (15.2) CL02, CL03, CL04, CL25, CL45 RT*1S 35†5 (15.2) CL06, CL07, CL08, CL09, CL10 RT*2B 35†7.5 (22.0) CL03, CL04, CL45 RT*1T 457.5 (22.0) CL06, CL07, CL08, CL09, CL10 RT*2C 457.5 (22.0) CL03, CL04, CL45 RT*1U 4510 (28.0) CL04 RT*1V 6010 (28.0) CL45 RT*1V 6010 (28.0) CL06, CL07, CL08, CL09, CL10 RT*2D 6015 (42.0) CL06, CL07, CL08, CL09, CL10 RT*2F 9020 (54.0) CL07, CL08, CL09, CL10 RT*2G 10020 (54.0) CL07, CL08, CL09, CL10 RT*2H 125†25 (68.0) CK08, CK09, CK95 RT*3B 12525 (68.0) CL08, CL09, CL10 RT*2J 12530 (80.0) CK08, CK09, CK95 RT*3B 12525 (68.0) CK08, CK09 RT*3C 150



0.5 (2.5) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1J 40.5 (2.5) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1K 8†0.75 (3.7) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1K 81 (4.8) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1L 101.5 (6.9) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1M 122 (7.8) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1N 20†3 (11.0) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1P 205 (17.5) CL02, CL03, CL04, CL25, CL45 RT*1S 355 (17.5) CL06, CL07, CL08, CL09, CL10 RT*2B 355 (17.5) CL03, CL04, CL45 RT*1T 45†7.5 (25.3) CL04, CL05 RT*1U 457.5 (25.3) CL06, CL07, CL08, CL09, CL10 RT*2D 60†7.5 (25.3) CL04, CL45 RT*1V 60†10 (32.2) CL45 RT*1W 7010 (32.2) CL06, CL07, CL08, CL09, CL10 RT*2E 7015 (48.3) CL07, CL08, CL09, CL10 RT*2G 10020 (62.1) CL08, CL09, CL10 RT*2H 12520 (62.1) CK08, CK09, CK95 RT*3B 12525 (78.2) CK08, CK09 RT*3C 150

* Replace * with “A” or “M”† Sized larger than code max for single motor.



General Electric Company — IEC (UL & CSA Verified)



0.5 (1.1) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1F 1.5††0.5 (1.1) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1G 20.75 (1.6) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1H 4†1 (2.1) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1J 41.5 (3.0) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1K 8†2 (3.4) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1K 8†3 (4.8) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1L 105 (7.6) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1N 20†7.5 (11.0) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1P 2010 (14.0) CL02, CL03, CL04, CL25, CL45 RT*1R 2510 (14.0) CL06, CL07, CL08, CL09, CL10 RT*2A 3015 (21.0) CL03, CL04, CL45 RT*1T 4515 (21.0) CL06, CL07, CL08, CL09, CL10 RT*2C 4520 (27.0) CL04, CL45 RT*1V 6020 (27.0) CL06, CL07, CL08, CL09, CL10 RT*2D 6025 (34.0) CL45 RT*1W 7025 (34.0) CL06, CL07, CL08, CL09, CL10 RT*2E 7030 (40.0) CL06, CL07, CL08, CL09, CL10 RT*2E 7030 (40.0) CL06, CL07, CL08, CL09, CL10 RT*2F 9040 (52.0) CL07, CL08, CL09, CL10 RT*2G 10050 (65.0) CL08, CL09, CL10 RT*2H 12550 (65.0) CL08, CL09, CL10 RT*3B 12550 (65.0) CL08, CL09, CL10 RT*2J 12560 (77.0) CL09, CL10 RT*3B 12560 (77.0) CL09, CL10 RT*2K 150



0.5 (0.9) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1F 1.50.75 (1.3) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1G 20.75 (1.3) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1H 4†1 (1.7) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1H 4†1.5 (2.4) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1J 42 (2.7) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1J 42 (2.7) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1K 8†3 (3.9) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1K 85 (6.1) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1L 105 (6.1) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1M 127.5 (9.0) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1N 2010 (11.0) CL00, CL01, CL02, CL03, CL04, CL25, CL45 RT*1P 2015 (17.0) CL02, CL03, CL04, CL25, CL45 RT*1S 3515 (17.0) CL06, CL07, CL08, CL09, CL10 RT*2B 3520 (22.0) CL03, CL04, CL45 RT*1T 4520 (22.0) CL06, CL07, CL08, CL09, CL10 RT*2C 4520 (22.0) CL03, CL04, CL45 RT*1U 4525 (27.0) CL04, CL45 RT*1V 6025 (27.0) CL06, CL07, CL08, CL09, CL10 RT*2D 6030 (32.0) CL04, CL45 RT*1V 6030 (32.0) CL06, CL07, CL08, CL09, CL10 RT*2D 6030 (32.0) CL45 RT*1W 7030 (32.0) CL06, CL07, CL08, CL09, CL10 RT*2E 7040 (41.0) CL06, CL07, CL08, CL09, CL10 RT*2E 7040 (41.0) CL06, CL07, CL08, CL09, CL10 RT*2F 9050 (52.0) CL07, CL08, CL09, CL10 RT*2G 10060 (62.0) CL07, CL08, CL09, CL10 RT*2H 12560 (62.0) CK08, CK09, CK95 RT*3B 12575 (77.0) CK08, CK09, CK95 RT*3B 12575 (77.0) CK08, CK09 RT*3C 150

* Replace * with “A” or “M”†† May be too small to allow some motors to start.† Sized larger than code max for single motor.



General Electric Company — NEMA (UL & CSA Verified)


LPJ_SPHP (FLC) OLR CLASS J0.5 (1.1) CR123C131A 2.50.5 (1.1) CR324CXD 30.75 (1.6) CR324CXD 3.50.75 (1.6) CR123C196A 3.51 (2.1) CR123C268A 51 (2.1) CR324CXE 61.5 (3.0) CR324CXE 61.5 (3.0) CR123C356A 62 (3.4) CR324CXF 72 (3.4) CR123C379A 73 (4.8) CR324CXF 103 (4.8) CR123C526A 105 (7.6) CR324CXG 155 (7.6) CR324DXG 155 (7.6) CR123C867A 157.5 (11.0) CR324CXG 207.5 (11.0) CR324DXG 207.5 (11.0) CR123C125B 2010 (14.0) CR234CXH 3010 (14.0) CR234DXH 3010 (14.0) CR123C163B 3015 (21.0) CR324CXH 4515 (21.0) CR324DXH 4515 (21.0) CR324FXK 4515 (21.0) CR123C228B 4515 (21.0) CR123F243B 45


LPJ_SPHP (FLC) OLR CLASS J0.5 (0.9) CR123C109A 20.5 (0.9) CR324CXD 30.75 (1.3) CR324CXD 30.75 (1.3) CR123C163A 31 (1.7) CR324CXD 3.51 (1.7) CR123C196A 3.51 (1.7) CR324CXE 3.51.5 (2.4) CR324CXE 61.5 (2.4) CR123C301A 62 (2.7) CR324CXE 62 (2.7) CR123C326A 63 (3.9) CR324CXF 103 (3.9) CR123C419A 105 (6.1) CR324CXF 155 (6.1) CR123C695A 157.5 (9.0) CR324CXG 207.5 (9.0) CR324DXG 207.5 (9.0) CR123C104B 207.5 (9.0) CR123C955A 2010 (11.0) CR123C125B 2010 (11.0) CR324CXG 2010 (11.0) CR324DXG 2015 (17.0) CR234DXH 3515 (17.0) CR234FXK 3515 (17.0) CR123C180B 3520 (22.0) CR324DXH 4520 (22.0) CR324FXK 4520 (22.0) CR123C228B 4520 (22.0) CR123C250B 4520 (22.0) CR123C270B 45


LPJ_SPHP (FLC) OLR CLASS J0.5 (2.5) CR324CXE 60.5 (2.5) CR123C326A 60.75 (3.7) CR123C356A 80.75 (3.7) CR324CXF 101 (4.8) CR324CXF 101 (4.8) CR123C526A 101.5 (6.9) CR324CXG 151.5 (6.9) CR123C778A 151.5 (6.9) CR123C695A 152 (7.8) CR324CXG 17.52 (7.8) CR123C867A 17.53 (11.0) CR324CXG 203 (11.0) CR123C125B 205 (17.5) CR234CXH 355 (17.5) CR234FXK 355 (17.5) CR123C180B 355 (17.5) CR123C198B 355 (17.5) CR123F233B 35


LPJ_SPHP (FLC) OLR CLASS J0.5 (2.2) CR123C268A 50.5 (2.2) CR324CXE 60.75 (3.2) CR324CXF 70.75 (3.2) CR123C356A 71 (4.2) CR324CXF 101 (4.2) CR123C466A 101.5 (6.0) CR324CXF 151.5 (6.0) CR123C695A 152 (6.8) CR324CXG 152 (6.8) CR324DXG 152 (6.8) CR123C778A 153 (9.6) CR324CXG 203 (9.6) CR324DXG 203 (9.6) CR123C104B 205 (15.2) CR234CXH 305 (15.2) CR234DXH 305 (15.2) CR123C163B 307.5 (22.0) CR324DXH 457.5 (22.0) CR324FXK 457.5 (22.0) CR123C228B 457.5 (22.0) CR123C250B 457.5 (22.0) CR123C270B 45





LPJ_SP KRP-C_SPHP (FLC) OLR CLASS J CLASS L7.5 (25.3) CR324DXH 507.5 (25.3) CR324FXK 507.5 (25.3) CR123C273B 507.5 (25.3) CR123C303B 507.5 (25.3) CR123F300B 5010 (32.2) CR324DXJ 7010 (32.2) CR324FXK 7010 (32.2) CR123C330B 7010 (32.2) CR123F395B 7015 (48.3) CR324DXJ 10015 (48.3) CR324FXL 10015 (48.3) CR123F614B 10020 (62.1) CR324FXL 12520 (62.1) CR123F772B 12525 (78.2) CR234FXM 17525 (78.2) CR324GXP 17525 (78.2) CR123F104C 17530 (92.0) CR234FXM 20030 (92.0) CR324GXP 20030 (92.0) CR123F118C 20040 (120.0) CR234FXM 25040 (120.0) CR324GXP 25040 (120.0) CR123F161C 25050 (150.0) CR324GXQ 30050 (150.0) CR324HXS 30060 (177.0) CR324GXQ 35060 (177.0) CR324HXS 35075 (221.0) CR324GXQ 45075 (221.0) CR324HXS 450100 (285.0) CR324HXT 600125 (359.0) CR324HXT 1000150 (414.0) CR324HXT 1000


LPJ_SP KRP-C_SPHP (FLC) OLR CLASS J CLASS L10 (28.0) CR324DXJ 6010 (28.0) CR324FXK 6010 (28.0) CR123C303B 6010 (28.0) CR123F327B 6015 (42.0) CR324DXJ 9015 (42.0) CR324FXL 9015 (42.0) CR123F567B 9015 (42.0) CR123F487B 9015 (42.0) CR123F440B 9020 (54.0) CR324FXL 11020 (54.0) CR123F719B 11025 (68.2) CR324FXL 15025 (68.2) CR324FXM 15025 (68.2) CR324GXP 15025 (68.2) CR123F848B 15025 (68.2) CR123F914B 15030 (80.0) CR234FXM 17530 (80.0) CR324GXP 17530 (80.0) CR123F104C 17540 (104.0) CR234FXM 22540 (104.0) CR324GXP 22540 (104.0) CR123F133C 22550 (130.0) CR234FXM 25050 (130.0) CR324GXP 25050 (130.0) CR123F161C 25060 (145.0) CR324GXQ 30060 (145.0) CR324HXS 30075 (192.0) CR324GXQ 40075 (192.0) CR324HXS 400100 (248.0) CR324GXQ 500100 (248.0) CR324HXS 500125 (312.0) CR324HXT 900150 (360.0) CR324HXT 1000200 (480.0) CR324HXT 1000





LPJ_SP KRP-C_SPHP (FLC) OLR CLASS J CLASS L20 (27.0) CR324DXH 6020 (27.0) CR324DXJ 6020 (27.0) CR324FXK 6020 (27.0) CR123C303B 6020 (27.0) CR123F327B 6020 (27.0) CR123C330B 6025 (34.0) CR324DXJ 7025 (34.0) CR324FXK 7025 (34.0) CR123C366B 7025 (34.0) CR123F430B 7030 (40.0) CR324DXJ 9030 (40.0) CR324FXL 9030 (40.0) CR123C400B 9030 (40.0) CR123F487B (SIZE 3) 9030 (40.0) CR123F487B (SIZE 4) 9040 (52.0) CR324FXL 11040 (52.0) CR123F658B (SIZE 3) 11040 (52.0) CR123F658B (SIZE 4) 11050 (65.0) CR324FXL 12550 (65.0) CR123F772B 12550 (65.0) CR324FXM 12550 (65.0) CR324GXP 12550 (65.0) CR123F848B 12560 (77.0) CR324FXM 15060 (77.0) CR324GXP 15060 (77.0) R123F104C (SIZE 3) 15060 (77.0) R123F104C (SIZE 4) 15075 (96.0) CR234FXM 20075 (96.0) CR324GXP 20075 (96.0) CR123F118C 200100 (124.0) CR234FXM 250100 (124.0) CR324GXP 250100 (124.0) CR123F161C 250125 (156.0) CR324GXQ 350125 (156.0) CR324HXS 350150 (180.0) CR324GXQ 400150 (180.0) CR324HXS 400200 (240.0) CR324GXQ 500200 (240.0) CR324HXS 500250 (302.0) CR324HXT 900300 (361.0) CR324HXT 1000350 (414.0) CR324HXT 1000400 (477.0) CR324HXT 1000450 (515.0) CR324HXT 1000


LPJ_SP KRP-C_SPHP (FLC) OLR CLASS J CLASS L25 (27.0) CR324DXH 6025 (27.0) CR324DXJ 6025 (27.0) CR324FXK 6025 (27.0) CR123C303B 6025 (27.0) CR123F327B 6025 (27.0) CR123C330B 6030 (32.0) CR324DXJ 7030 (32.0) CR324FXK 7030 (32.0) CR123C330B 7030 (32.0) CR123F395B 7040 (41.0) CR324DXJ 9040 (41.0) CR324FXL 9040 (41.0) CR123C400B 9040 (41.0) CR123F567B 9040 (41.0) CR123F487B 9050 (52.0) CR324FXL 11050 (52.0) CR123F658B (SIZE 3) 11050 (52.0) CR123F658B (SIZE 4) 11060 (62.0) CR324FXL 12560 (62.0) CR123F772B 12575 (77.0) CR324FXM 15075 (77.0) CR324GXP 15075 (77.0) R123F104C (SIZE 3) 15075 (77.0) R123F104C (SIZE 4) 150100 (99.0) CR234FXM 200100 (99.0) CR324GXP 200100 (99.0) CR123F118C 200125 (125.0) CR234FXM 250125 (125.0) CR324GXP 250125 (125.0) CR123F161C 250150 (144.0) CR324GXQ 300150 (144.0) CR324HXS 300200 (192.0) CR324GXQ 400200 (192.0) CR324HXS 400250 (242.0) CR324GXQ 500250 (242.0) CR324HXS 500300 (289.0) CR324HXT 800350 (336.0) CR324HXT 1000400 (382.0) CR324HXT 1000450 (412.0) CR324HXT 1000500 (472.0) CR324HXT 1000



Rockwell Automation, Allen-Bradley — IEC (UL & CSA Verified)

200 Volt, Three-Phase MotorsCONTACTOR OVERLOAD RELAY MAX FUSEBASIC CAT. # BASIC CAT. # LPJ_SP LP-CC

HP (FLC) (a) (b) CLASS J CLASS CC0.5 (2.5) 100-C09 193-E**EB 6 60.75 (3.7) 100-C09 193-E**EB 10 101 (4.8) 100-C09 193-E**FB 15† 151.5 (6.9) 100-C09 193-E**FB 15 152 (7.8) 100-C09 193-E**FB 15 15††3 (11) 100-C12 193-E**FB 20 20††5 (17.5) 100-C23 193-E**GB 30 30††7.5 (25.3) 100-C30 193-E**HC 4010 (32.2) 100-C37 193-E**HC 5015 (48.3) 100-C60 193-E**KE 8020 (62.1) 100-C72 193-E**KE 10025 (78.2) 100-C85 193-E**KE 100††


HP (FLC) (a) (b) CLASS J CLASS CC0.5 (2.2) 100-C09 193-E**DB 6 60.75 (3.2) 100-C09 193-E**EB 10† 101 (4.2) 100-C09 193-E**FB 15† 151.5 (6) 100-C09 193-E**FB 15 152 (6.8) 100-C09 193-E**FB 15 153 (9.6) 100-C12 193-E**FB 20 205 (15.2) 100-C16 193-E**GB 20†† 20††7.5 (22) 100-C23 193-E**GB 30†† 30††10 (28) 100-C30 193-E**HC 40††15 (42) 100-C43 193-E**JD 50††20 (54) 100-C60 193-E**KE 80††25 (68) 100-C72 193-E**KE 10030 (80) 100-C85 193-E**KE 100††


HP (FLC) (a) (b) CLASS J CLASS CC0.5 (0.9) 100-C09 193-E**DB 3 30.75 (1.3) 100-C09 193-E**DB 3 31 (1.7) 100-C09 193-E**DB 6† 61.5 (2.4) 100-C09 193-E**DB 6 62 (2.7) 100-C09 193-E**EB 10† 103 (3.9) 100-C09 193-E**FB 10 105 (6.1) 100-C09 193-E**FB 15 155 (7.6) 100-C09 193-E**FB 15 15††7.5 (9) 100-C09 193-E**FB 15 15††10 (11) 100-C12 193-E**FB 20 20††15 (17) 100-C23 193-E**GB 30 30††20 (22) 100-C30 193-E**HC 4025 (27) 100-C37 193-E**HC 5030 (32) 100-C37 193-E**HC 5040 (41) 100-C60 193-E**KE 8050 (52) 100-C72 193-E**KE 10060 (62) 100-C85 193-E**KE 100


HP (FLC) (a) (b) CLASS J CLASS CC0.5 (1.1) 100-C09 193-E**DB 3 30.75 (1.6) 100-C09 193-E**DB 6† 61 (2.1) 100-C09 193-E**DB 6 61.5 (3) 100-C09 193-E**EB 10† 102 (3.4) 100-C09 193-E**EB 10† 103 (4.8) 100-C09 193-E**FB 15† 155 (7.6) 100-C09 193-E**FB 15 15††7.5 (11) 100-C12 193-E**FB 20 20††10 (14) 100-C16 193-E**GB 20†† 20††15 (21) 100-C23 193-E**GB 30†† 30††20 (27) 100-C30 193-E**HC 4025 (34) 100-C37 193-E**HC 5030 (40) 100-C43 193-E**JD 50††40 (52) 100-C60 193-E**KE 8050 (65) 100-C72 193-E**KE 10060 (77) 100-C85 193-E**KE 100††

(a) Catalog number is not complete, add coil voltage code and auxiliary contact description.(b) Catalog number is not complete, replace ** with trip class and reset mode.†† May be too small to allow some motors to start.† Sized larger than code max for single motor.



Rockwell Automation, Allen-Bradley — NEMA (UL & CSA Verified)


STARTER† HEATER LPN-RK_SP/LPJ_SPHP (FLC) SIZE CAT. # # ELEMENT CLASS RK1/J1.5 (6.9) 0 509-A W48 152 (7.8) 0 509-A W50 153 (11.0) 0 509-A W53 205 (17.5) 1 509-B W59 307.5 (25.3) 2 509-C W63 5010 (32.2) 3 509-D W65 6015 (48.3) 3 509-D W68 10020 (62.1) 3 509-D W71 10025 (78.2) 3 509-D W75 15030 (92.0) 4 509-E W77 17540 (120.0) 4 509-E W81 20050 (150.0) 5 509-F W37 200††60 (177.1) 5 509-F W39 250††75 (221.0) 5 509-F W41 350


STARTER† HEATER LPS-RK_SP/LPJ_SPHP (FLC) SIZE CAT. # ELEMENT CLASS RK1/J5 (6.1) 0 509-A W47 127.5 (9.0) 1 509-B W51 2010 (11.0) 1 509-B W53 2015 (17.0) 2 509-C W58 3525 (27.0) 2 509-C W63 6030 (32.0) 3 509-D W64 7040 (41.0) 3 509-D W66 9050 (52.0) 3 509-D W69 10060 (62.0) 4 509-E W71 10075 (77.0) 4 509-E W74 125100 (99.0) 4 509-E W78 175125 (125.0) 5 509-F W35 200150 (144.0) 5 509-F W36 200††200 (192.0) 5 509-F W40 300


STARTER† HEATER LPS-RK_SP/LPJ_SPHP (FLC) SIZE CAT. # ELEMENT CLASS RK1/J5 (7.6) 0 509-A W49 157.5 (11.0) 1 509-B W53 2010 (14.0) 1 509-B W56 3015 (21.0) 2 509-C W61 4520 (27.0) 2 509-C W63 6025 (34.0) 3 509-D W66 6030 (40.0) 3 509-D W66 9040 (52.0) 3 509-D W69 10050 (65.0) 3 509-D W72 10060 (77.0) 4 509-E W74 12575 (96.0) 4 509-E W77 175100 (124.0) 4 509-E W82 200125 (156.0) 5 509-F W37 200††150 (180.0) 5 509-F W39 250††200 (240.0) 5 509-F W42 400


STARTER† HEATER LPN-RK_SP/LPJ_SPHP (FLC) SIZE CAT. # ELEMENT CLASS RK1/J2 (6.8) 0 509-A W48 153 (9.6) 0 509-A W52 205 (15.2) 1 509-B W57 307.5 (22.0) 2 509-C W61 4510 (28.0) 3 509-C W64 6015 (42.0) 3 509-D W66 9020 (54.0) 3 509-D W69 10025 (68.2) 3 509-D W73 100††30 (80.0) 3 509-D W75 15040 (104.0) 4 509-E W79 17550 (130.0) 4 509-E W83 20060 (154.0) 5 509-F W37 200††75 (192.0) 5 509-F W40 300100 (248.0) 5 509-F W43 400

† Catalog number is not complete. Refer to Bulletin 509 Section of A-B Industrial ControlCatalog to specify complete catalog starter number.†† May be too small to allow some motors to start.



Square D Company — IEC (UL & CSA Verified)


HP (FLC) CONTACTOR OLR LPJ_SP LPS-RK_SP KRP-C_SPCLASS J CLASS RK1 CLASS L

0.75 (1.3) LC1D09 LR2D1306 31 (1.7) LC1D09 LR2D1306 31.5 (2.4) LC1D09 LR2D1307 42 (2.7) LC1D09 LR2D1308 63 (3.9) LC1D09 LR2D1308 65 (6.1) LC1D09 LR2D1312 107.5 (9.0) LC1D012 LR2D1314 157.5 (9.0) LC1D018 LR2D1316 2010 (11.0) LC1D018 LR2D1316 2015 (17.0) LC1D025 LR2D1321 2515 (17.0) LC1D032 LR2D1322 3520 (22.0) LC1D032 LR2D1322 3530 (32.0) LC1D040 LR2D3355 45††40 (41.0) LC1D050 LR2D3357 7050 (52.0) LC1D065 LR2D3359 8050 (52.0) LC1D080 LR2D3359 9060 (62.0) LC1D065 LR2D3359 80††60 (62.0) LC1D080 LR2D3359 90††75 (77.0) LC1F115 LR2D3363 150 125100 (99.0) LC1F115 LR2F5367 200 200125 (125.0) LC1F150 LR2F5569 250 250150 (144.0) LC1F185 LR2F5569 300 250150 (144.0) LC1F185 LR2F5571 300 300200 (192.0) LC1F265 LR2F5571 400 350200 (192.0) LC1F265 LR2F6573 400 400250 (242.0) LC1F400 LR2F6575 500 500300 (289.0) LC1F400 LR2F6575 500 500300 (289.0) LC1F400 LR2F6577 600 601350 (336.0) LC1F500 LR2F6577 600 700400 (382.0) LC1F500 LR2F6577 600 800500 (472.0) LC1F500 LR2F7579 1000600 (576.0) LC1F630 LR2F7581 1200800 (770.0) LC1F630 LR2F8583 1600


HP (FLC) CONTACTOR OLR LPJ_SP LPS-RK_SP KRP-C_SPCLASS J CLASS RK1 CLASS L

0.5 (1.1) LC1D09 LR2D1306 30.75 (1.6) LC1D09 LR2D1306 31 (2.1) LC1D09 LR2D1307 41.5 (3.0) LC1D09 LR2D1308 62 (3.4) LC1D09 LR2D1308 63 (4.8) LC1D09 LR2D1310 105 (7.6) LC1D09 LR2D1312 155 (7.6) LC1D09 LR2D1314 157.5 (11.0) LC1D012 LR2D1316 2010 (14.0) LC1D018 LR2D1321 2515 (21.0) LC1D032 LR2D1322 3520 (27.0) LC1D032 LR2D2353 4025 (34.0) LC1D040 LR2D3355 6030 (40.0) LC1D040 LR2D3355 6030 (40.0) LC1D050 LR2D3357 7040 (52.0) LC1D050 LR2D3359 8040 (52.0) LC1D065 LR2D3359 10050 (65.0) LC1D050 LR2D3359 80††50 (65.0) LC1D065 LR2D3359 10075 (96.0) LC1F115 LR2F5367 200 200100 (124.0) LC1F150 LR2F5569 250 250125 (156.0) LC1F185 LR2F5569 300 250125 (156.0) LC1F185 LR2F5571 350 350150 (180.0) LC1F265 LR2F6571 400 350150 (180.0) LC1F265 LR2F6573 400 400200 (240.0) LC1F400 LR2F6573 450 500200 (240.0) LC1F400 LR2F6575 500 500250 (302.0) LC1F400 LR2F6575 500 500250 (302.0) LC1F400 LR2F6577 600 650300 (361.0) LC1F500 LR2F6577 600 800350 (414.0) LC1F500 LR2F7579 800400 (477.0) LC1F500 LR2F7579 1000500 (590.0) LC1F630 LR2F7581 1350600 (720.0) LC1F630 LR2F8583 1600


HP (FLC) CONTACTOR OLR LPJ_SP LPN-RK_SP KRP-C_SPCLASS J CLASS RK1 CLASS L

0.5 (2.5) LC1D09 LR2D1307 40.75 (3.7) LC1D09 LR2D1308 61 (4.8) LC1D09 LR2D1310 101.5 (6.9) LC1D09 LR2D1312 152 (7.8) LC1D09 LR2D1312 152 (7.8) LC1D09 LR2D1314 153 (11.0) LC1D012 LR2D1316 205 (17.5) LC1D018 LR2D1321 25††5 (17.5) LC1D025 LR2D1322 357.5 (25.3) LC1D032 LR2D2353 4010 (32.2) LC1D040 LR2D3355 6015 (48.3) LC1D050 LR2D3357 70††15 (48.3) LC1D050 LR2D3359 8015 (48.3) LC1D065 LR2D3359 10020 (62.1) LC1D050 LR2D3359 80††20 (62.1) LC1D065 LR2D3359 10030 (92.0) LC1F115 LR2F5367 200 20040 (120.0) LC1F150 LR2F5569 250 25050 (150.0) LC1F185 LR2F5569 300 25050 (150.0) LC1F185 LR2F5571 300 30060 (177.0) LC1F265 LR2F6573 35060 (177.0) LC1F265 LR2F5571 350 35075 (221.0) LC1F400 LR2F6575 450100 (285.0) LC1F400 LR2F6575 500 500100 (285.0) LC1F400 LR2F6577 600 601125 (359.0) LC1F500 LR2F6577 600 800


HP (FLC) CONTACTOR OLR LPJ_SP LPN-RK_SP KRP-C_SPCLASS J CLASS RK1 CLASS L

0.5 (2.2) LC1D09 LR2D1307 40.75 (3.2) LC1D09 LR2D1308 61 (4.2) LC1D09 LR2D1310 101.5 (6.0) LC1D09 LR2D1310 101.5 (6.0) LC1D09 LR2D1312 152 (6.8) LC1D09 LR2D1312 153 (9.6) LC1D09 LR2D1314 153 (9.6) LC1D012 LR2D1316 205 (15.2) LC1D018 LR2D1321 257.5 (22.0) LC1D032 LR2D1322 3510 (28.0) LC1D032 LR2D2353 40††15 (42.0) LC1D050 LR2D3357 7020 (54.0) LC1D050 LR2D3359 80††20 (54.0) LC1D065 LR2D3359 10040 (104.0) LC1F115 LR2F5367 225 20040 (104.0) LC1F115 LR2F5369 225 22550 (130.0) LC1F150 LR2F5569 250 25060 (154.0) LC1F185 LR2F5569 300 25060 (154.0) LC1F185 LR2F5571 300 30075 (192.0) LC1F265 LR2F6571 400 35075 (192.0) LC1F265 LR2F6573 400 400100 (248.0) LC1F400 LR2F6575 500 500125 (312.0) LC1F400 LR2F6575 500 500125 (312.0) LC1F400 LR2F6577 600 700150 (360.0) LC1F500 LR2F6577 600 800200 (480.0) LC1F500 LR2F7579 1000250 (600.0) LC1F630 LR2F7581 1350300 (720.0) LC1F630 LR2F8583 1600

†† May be too small to allow some motors to start.





HP (FLC) CONTACTOR OLR LP-CC LPJ_SP TCFCLASS CC CLASS J CUBEFuse

2 (2.7) LC1D09 LRD1508 8 6 63 (3.9) LC1D09 LRD1508 8 6 65 (6.1) LC1D09 LRD1512 25 20 207.5 (9.0) LC1D09 LRD1514 25 20 2010 (11.0) LC1D12 LRD1516 25 20 2010 (11.0) LC1D18 LRD1516 30 20 2015 (17.0) LC1D18 LRD1522 25 2520 (22.0) LC1D25 LRD1522 35 3525 (27.0) LC1D40 LRD1530 50 5030 (32.0) LC1D40 LRD3555 60 6040 (41.0) LC1D50 LRD3557 70 7050 (52.0) LC1D65 LRD3559 100 10060 (62.0) LC1D80 LRD3561 12575 (77.0) LC1D115 LR9D5567 150100 (99.0) LC1D115 LR9D5569 175125 (125) LC1D150 LR9D5569 200



1.5 (3.0) LC1D09 LRD1508 8 6 62 (3.4) LC1D09 LRD1508 8 6 63 (4.8) LC1D09 LRD1510 25 20 205 (7.6) LC1D09 LRD1512 25 20 207.5 (11.0) LC1D12 LRD1516 25 20 2010 (14.0) LC1D18 LRD1521 25 2515 (21.0) LC1D25 LRD1522 35 3520 (27.0) LC1D40 LRD1530 50 5025 (34.0) LC1D40 LRD3555 60 6030 (40.0) LC1D40 LRD3555 60 6030 (40.0) LC1D50 LRD3557 70 7040 (52.0) LC1D50 LRD3559 80 8050 (65.0) LC1D65 LRD3559 80* 80*50 (65.0) LC1D65 LRD3559 100 10060 (77.0) LC1D80 LRD3563 12575 (96.0) LC1D115 LRD5569 175100 (124) LC1D125 LRD5569 200



0.5 (2.5) LC1D09 LRD1508 8 6 60.75 (3.7) LC1D09 LRD1508 8 6 61 (4.8) LC1D09 LRD1510 25 20 201.5 (6.4) LC1D09 LRD1512 25 20 202 (7.8) LC1D09 LRD1512 25 20 203 (11.0) LC1D12 LRD1516 25 20 205 (17.5) LC1D18 LRD1522 25* 25*7.5 (25.3) LC1D40 LRD1530 50 5010 (32.2) LC1D40 LRD3555 60 6015 (48.3) LC1D50 LRD3557 70* 70*20 (62.1) LC1D65 LRD3559 100 10025 (78.2) LC1D80 LRD3563 12530 (92.0) LC1D115 LRD5569 17540 (120) LC1D150 LRD5569 200



0.75 (3.4) LC1D09 LRD1508 8 6 61 (4.2) LC1D09 LRD1510 25 20 201.5 (6.0) LC1D09 LRD1512 25 20 202 (6.8) LC1D09 LRD1512 25 20 203 (9.5) LC1D12 LRD1516 25 20 205 (15.2) LC1D18 LRD1521 25 257.5 (22.0) LC1D25 LRD1522 35 3510 (28.0) LC1D40 LRD1530 50 5015 (42.0) LC1D50 LRD3557 70 7020 (54.0) LC1D65 LRD3559 100 10025 (68.0) LC1D80 LRD3563 12530 (80.0) LC1D80 LRD3560 12540 (104) LC1D115 LRD5569 175

* May be too small to allow some motors to start.






0.75 (1.3) LC1D09 LRD06 8 3 31 (1.7) LC1D09 LRD07 8 6 61.5 (2.4) LC1D09 LRD07 8 6 62 (2.7) LC1D09 LRD08 8 6 63 (3.9) LC1D09 LRD08 25 6 65 (6.1) LC1D09 LRD12 25 17.5 17.57.5 (9.0) LC1D09 LRD14 25 17.5 17.510 (11.0) LC1D12 LRD16 25 17.5 17.510 (11.0) LC1D18 LRD16 30 17.5 17.515 (17.0) LC1D18 LRD21 25* 25*20 (22.0) LC1D25 LRD22 35 3525 (27.0) LC1D40 LRD32 50 5030 (32.0) LC1D40 LRD3355 60 6040 (41.0) LC1D50 LRD3357 70 7050 (52.0) LC1D65 LRD3359 100 10060 (62.0) LC1D80 LRD3361 12575 (77.0) LC1D115 LR9D5367 150100 (99.0) LC1D115 LR9D5369 175125 (125) LC1D150 LR9D5369 225



0.75 (1.6) LC1D09 LRD06 8 3 31 (2.1) LC1D09 LRD07 8 6 61.5 (3.0) LC1D09 LRD08 8 6 62 (3.4) LC1D09 LRD08 8 6 63 (4.8) LC1D09 LRD10 25 17.5 17.55 (7.6) LC1D09 LRD12 25 17.5 17.57.5 (11.0) LC1D12 LRD16 25 17.5 17.510 (14.0) LC1D18 LRD21 25 2515 (21.0) LC1D25 LRD22 35 3520 (27.0) LC1D40 LRD32 50 5025 (34.0) LC1D40 LRD3355 60 6030 (40.0) LC1D40 LRD3355 60 6030 (40.0) LC1D50 LRD3357 70 7040 (52.0) LC1D50 LRD3359 80 8050 (65.0) LC1D65 LRD3359 100 10060 (77.0) LC1D80 LRD3363 12575 (96.0) LC1D115 LRD5369 175100 (124) LC1D125 LRD5369 225



0.5 (2.5) LC1D09 LRD07 8 6 60.75 (3.7) LC1D09 LRD08 8 6 61 (4.8) LC1D09 LRD10 25 17.5 17.51.5 (6.9) LC1D09 LRD12 25 17.5 17.52 (7.8) LC1D09 LRD12 25 17.5 17.53 (11.0) LC1D12 LRD16 25 17.5 17.55 (17.5) LC1D18 LRD21 25* 25*7.5 (25.3) LC1D40 LRD40 50 5010 (32.2) LC1D40 LRD3555 60 6015 (48.3) LC1D50 LRD3557 70 7020 (62.1) LC1D65 LRD3559 100 10025 (78.2) LC1D80 LRD3563 12530 (92.0) LC1D115 LRD5569 17540 (120) LC1D150 LRD5569 225



0.5 (2.2) LC1D09 LRD07 8 6 60.75 (3.2) LC1D09 LRD08 8 6 61 (4.2) LC1D09 LRD10 25 17.5 17.51.5 (6.0) LC1D09 LRD12 25 17.5 17.52 (6.8) LC1D09 LRD12 25 17.5 17.53 (9.6) LC1D12 LRD16 25 17.5 17.55 (15.5) LC1D18 LRD21 25 257.5 (22.0) LC1D25 LRD22 35 3510 (28.0) LC1D40 LRD32 50 5015 (42.0) LC1D50 LRD3357 70 7020 (54.0) LC1D65 LRD3359 100 10025 (68.0) LC1D80 LRD3363 12530 (80.0) LC1D80 LRD3363 12540 (104) LC1D115 LRD5369 175

* May be too small to allow some motors to start.



Square D Company — NEMA (UL & CSA Verified)


HP (FLC) STARTER CAT. # HEATER LPN-RK_SP LPJ_SPSIZE CLASS RK1 CLASS J

1.5 (6.9) 0 SB02V02S B11.5* 12 152 (7.8) 0 SB02V02S B12.8 15 153 (11.0) 0 SB02V02S B19.5 17.5 205 (17.5) 1 SC03V02S B32 25 307.5 (25.3) 1 SC03V02S B50 40 4510 (32.2) 2 SD01V02S B62 50 6015 (48.3) 3 SE01V02S CC81.5 70 8020 (62.1) 3 SE01V02S CC112 100 10025 (78.2) 3 SE01V02S CC180 125 12530 (92.0) 4 SF01V02S CC156 150 15040 (120.0) 4 SF01V02S CC208 175 20050 (150.0) 5 SG01V02S** B3.70 225 25060 (177.0) 5 SG01V02S** B4.15 300 30075 (221.0) 5 SG01V02S** B5.50 350 400


HP (FLC) STARTER CAT. # HEATER LPS-RK_SP LPJ _SPSIZE CLASS RK1 CLASS J

3 (3.9) 0 SB02V02S B6.25 6 85 (6.1) 0 SB02V02S B10.2 10 127.5 (9.0) 1 SC03V02S B15.5 15 17.510 (11.0) 1 SC03V02S B19.5 17.5 2015 (17.0) 2 SD01V02S B28.0 25 3020 (22.0) 2 SD01V02S B40 35 4025 (27.0) 2 SD01V02S B45 40 4530 (32.0) 3 SE01V02S CC50.1 50 5040 (41.0) 3 SE01V02S CC68.5 60 7050 (52.0) 3 SE01V02S CC87.7 80 9060 (62.0) 4 SF01V02S CC103 100 10075 (77.0) 4 SF01V02S CC121 125 125100 (99.0) 4 SF01V02S CC167 150 175125 (125.0) 5 SG01V02S** B3.00 200 200150 (144.0) 5 SG01V02S** B3.70 225 250200 (192.0) 5 SG01V02S** B4.15 300 300


HP (FLC) STARTER CAT. # HEATER LPS-RK_SP LPJ _SPSIZE CLASS RK1 CLASS J

3 (4.8) 0 SB02V02S B7.70* 8 95 (7.6) 0 SB02V02S B12.8 15 157.5 (11.0) 1 SC03V02S B19.5 17.5 2010 (14.0) 1 SC03V02S B25 20 2515 (21.0) 2 SD01V02S B36 30 3520 (27.0) 2 SD01V02S B45 40 4525 (34.0) 2 SD01V02S B70 50 6030 (40.0) 3 SE01V02S CC64.3 60 7040 (52.0) 3 SE01V02S CC87.7 80 9050 (65.0) 3 SE01V02S CC121 100 11060 (77.0) 4 SF01V02S CC121 125 12575 (96.0) 4 SF01V02S CC167 150 175100 (124.0) 5 SG01V02S** B3.00 200 200125 (156.0) 5 SG01V02S** B3.70 225 250150 (180.0) 5 SG01V02S** B4.15 300 300200 (240.0) 5 SG01V02S** B6.25 400 400


HP (FLC) STARTER CAT. # HEATER LPN-RK_SP LPJ _SPSIZE CLASS RK1 CLASS J

1.5 (6.0) 0 SB02V02S B10.2 10 122 (6.8) 0 SB02V02S B11.5* 12 153 (9.6) 0 SB02V02S B15.5 17.5 17.55 (15.2) 1 SC03V02S B28.0 25 307.5 (22.0) 1 SC03V02S B45 35 50†10 (28.0) 2 SD01V02S B50 45 5015 (42.0) 3 SE01V02S CC68.5 70 7020 (54.0) 3 SE01V02S CC94.0 80 9025 (68.0) 3 SE01V02S CC132 110 12530 (80.0) 3 SE01V02S CC196 125 15040 (104.0) 4 SF01V02S CC180 175 17550 (130.0) 5 SG01V02S** B3.30 200 20060 (154.0) 5 SG01V02S** B3.70 225 25075 (192.0) 5 SG01V02S** B4.15 300 300100 (248.0) 5 SG01V02S** B6.25 400 400

* These overloads were not tested. Maximum fuse sizes are for the lower value of over-load which was tested.** Y500† Sized larger than code max for single motor.



Siemens — IEC (UL & CSA Verified)


HP (FLC) STARTER OLR LPN-RK_SP LPJ_SP LP-CCCLASS RK1 CLASS J CLASS CC

0.5 (2.5) 3TF30/40 3UA5000-1D 6 6 60.75 (3.7) 3TF30/40 3UA5000-1E 6 6 6††1 (4.8) 3TF30/40 3UA5000-1F 8 8 101 (4.8) 3TF30/40 3UA5000-1G 10 10 101.5 (6.9) 3TF30/40 3UA5000-1H 15 15 202 (7.8) 3TF30/40 3UA5000-1J 15 15 203 (11.0) 3TF31/41 3UA5000-1K 20 20 303 (11.0) 3TF31/41 3UA5000-2S 25† 25† 305 (17.5) 3TF32/42 3UA5200-2B 30 30 30††7.5 (25.3) 3TF34/44 3UA5500-2D 50 5010 (32.2) 3TF46 3UA5800-2E 60 6015 (48.3) 3TF46 3UA5800-2T 90 9020 (62.1) 3TF47 3UA5800-2V 125 12525 (78.2) 3TF48 3UA5800-8W 175 17530 (92.0) 3TF50 3UA6000-2X 200 20040 (120.0) 3TF50 3UA6000-3J 250 25050 (150.0) 31T52 3UA6200-3L 300 30075 (221.0) 3TF54 3UA6600-3C 400 40075 (221.0) 3TF54 3UA6600-3D 450 450100 (285.2) 3TF56 3UA6600-3D 500 500125 (359.0) 3TF56 3UA6600-3E 500 500††


HP (FLC) STARTER OLR LPS-RK_SP LPJ_SP LP-CCCLASS RK1 CLASS J CLASS CC

0.5 (1.1) 3TF30/40 3UA5000-1A 1.6 2 2.250.75 (1.6) 3TF30/40 3UA5000-1A 1.6†† 2†† 2.25††1 (2.1) 3TF30/40 3UA5000-1C 2.8 3†† 3††1.5 (3.0) 3TF30/40 3UA5000-1D 6 6 62 (3.4) 3TF30/40 3UA5000-1E 6 6 6††3 (4.8) 3TF30/40 3UA5000-1F 8 8 103 (4.8) 3TF30/40 3UA5000-1G 10 10 105 (7.6) 3TF30/40 3UA5000-1H 15 15 205 (7.6) 3TF30/40 3UA5000-1J 15 15 207.5 (11.0) 3TF31/41 3UA5000-1K 20 20 307.5 (11.0) 3TF31/41 3UA5000-2S 25† 25† 3010 (14.0) 3TF32/42 3UA5200-2A 25 25 3015 (21.0) 3TF33/43 3UA5200-2C 40 40 30††20 (27.0) 3TF34/44 3UA5500-2D 50 5025 (34.0) 3TF46 3UA5800-2E 60 6030 (40.0) 3TF46 3UA5800-2F 70 7040 (52.0) 3TF46 3UA5800-2T 90 9050 (65.0) 3TF47 3UA5800-2V 125 12560 (77.0) 3TF48 3UA5800-8W 175† 175†75 (96.0) 3TF50 3UA6000-2X 200 200100 (124.0) 3TF50 3UA6000-3J 250 250125 (156.0) 31T52 3UA6200-3L 300 300150 (180.0) 3TF54 3UA6600-3B 300 300200 (240.0) 3TF54 3UA6600-3C 400 400250 (302.0) 3TF56 3UA6600-3D 500 500300 (361.0) 3TF56 3UA6600-3E 500 500††



0.5 (2.2) 3TF30/40 3UA5000-1C 2.8 3†† 3††0.75 (3.2) 3TF30/40 3UA5000-1E 6 6 6††1 (4.2) 3TF30/40 3UA5000-1F 8 8 101.5 (6.0) 3TF30/40 3UA5000-1G 10 10 10††2 (6.8) 3TF30/40 3UA5000-1H 15 15 203 (9.6) 3TF30/40 3UA5000-1J 15 15 203 (9.6) 3TF31/41 3UA5000-1J 15 15 205 (15.2) 3TF32/42 3UA5200-2A 25 25 307.5 (22.0) 3TF33/43 3UA5200-2C 40 40 30††10 (28.0) 3TF34/44 3UA5500-2D 50 5015 (42.0) 3TF46 3UA5800-2F 70 7020 (54.0) 3TF46 3UA5800-2T 90 9025 (68.0) 3TF47 3UA5800-2V 125 12530 (80.0) 3TF48 3UA5800-8W 175 17540 (104.0) 3TF50 3UA6000-2X 200 20050 (130.0) 3TF50 3UA6000-3J 250 25060 (154.0) 31T52 3UA6200-3L 300 30075 (192.0) 3TF54 3UA6600-3C 400 400100 (248.0) 3TF54 3UA6600-3D 450 450125 (312.0) 3TF56 3UA6600-3D 500 500150 (360.0) 3TF56 3UA6600-3E 500 500††

†† May be too small to allow some motors to start.† Sized larger than code max for single motor.



Siemens — NEMA (UL & CSA Verified)



0.5 (2.5) SXLA 3UA5000-1D 6 6 60.75 (3.7) SXLA 3UA5000-1E 6 6 6††1 (4.8) SXLA 3UA5000-1F 8 8 101.5 (6.9) SXLA 3UA5000-1H 15 15 202 (7.8) SXLB 3UA5400-1J 15 15 203 (11.0) SXLB 3UA5400-1K 20 20 305 (17.5) SXLC 3UA5400-2B 30 30 30††7.5 (25.3) SXLC 3UA5400-2D 50 5010 (32.2) SXLD 3UA5800-2E 60 6015 (48.3) SXLE 3UA5800-2T 90 9020 (62.1) SXLE 3UA5800-2V 125 12525 (78.2) SXLE 3UA5800-8W 175 17530 (92.0) SXLF 3UA6200-2X 200 20040 (120.0) SXLF 3UA6200-3J 250 25050 (150.0) SXLG 3UA6600-3B 300 30060 (177.0) SXLG 3UA6600-3C 400† 400†75 (221.0) SXLG 3UA6600-3D 500† 450


HP (FLC) STARTER OLR LPS-RK_SP LPJ_SP LP-CCCLASS RK1 CLASS J CLASS CC

0.5 (1.1) SXLA 3UA5000-1A 1.6 2 2.250.75 (1.6) SXLA 3UA5000-1A 1.6 2†† 2.25††1 (2.1) SXLA 3UA5000-1C 2.8 3†† 3††1.5 (3.0) SXLA 3UA5000-1D 6 6 62 (3.4) SXLA 3UA5000-1E 6 6 6††3 (4.8) SXLB 3UA5400-1G 10 10 105 (7.6) SXLB 3UA5400-1H 15 15 207.5 (11.0) SXLC 3UA5400-1K 20 20 3010 (14.0) SXLC 3UA5400-2A 25 25 3015 (21.0) SXLD 3UA5800-2C 40 40 30††20 (27.0) SXLD 3UA5800-2D 50 5025 (34.0) SXLD 3UA5800-2E 60 6030 (40.0) SXLE 3UA5800-2F 70 7040 (52.0) SXLE 3UA5800-2T 90 9050 (65.0) SXLE 3UA5800-2V 125 12560 (77.0) SXLF 3UA6200-2W 175† 175†75 (96.0) SXLF 3UA6200-2X 200 200100 (124.0) SXLF 3UA6200-3J 250 250125 (156.0) SXLG 3UA6600-3B 300 300150 (180.0) SXLG 3UA6600-3C 400 400200 (240.0) SXLG 3UA6600-3D 500 450



0.5 (2.2) SXLA 3UA5000-1C 2.8 3†† 3††0.75 (3.2) SXLA 3UA5000-1E 6 6 6††1 (4.2) SXLA 3UA5000-1F 8 8 101.5 (6.0) SXLA 3UA5000-1G 10 10 10††2 (6.8) SXLB 3UA5400-1H 15 15 203 (9.6) SXLB 3UA5400-1K 20 20 305 (15.2) SXLC 3UA5400-2B 30 30 307.5 (22.0) SXLC 3UA5400-2C 40 40 30††10 (28.0) SXLD 3UA5800-2D 50 5015 (42.0) SXLD 3UA5800-2F 70 7020 (54.0) SXLE 3UA5800-2T 90 9025 (68.0) SXLE 3UA5800-2U 150 15030 (80.0) SXLE 3UA5800-8W 175 17540 (104.0) SXLF 3UA6200-3H 225 22550 (130.0) SXLF 3UA6200-3J 250 25060 (154.0) SXLG 3UA6600-3B 300 30075 (192.0) SXLG 3UA6600-3C 400 400100 (248.0) SXLG 3UA6600-3D 500 450

†† May be too small to allow some motors to start.† Sized larger than code max for single motor.



Cutler Hammer Freedom Series — IEC (UL & CSA Verified)


STARTER HEATER LPJ_SP LP-CCHP (FLC) NUMBER ELEMENT CLASS J CLASS CC0.5 (2.5) AE16ANSO_C H2106B-3 6 60.75 (3.7) AE16ANSO_C H2107B-3 6 6†1 (4.8) AE16ANSO_C H2108B-3 10 151.5 (6.9) AE16ANSO_C H2109B-3 15 202 (7.8) AE16BNSO_C H2110B-3 17.5 253 (11.0) AE16CNSO_C H2111B-3 205 (17.5) AE16DNSO_C H2112B-3 357.5 (25.3) AE16ENSO_B H2114B-3 5010 (32.2) AE16HNSO_B H2115B-3 7015 (48.3) AE16JNSO_B H2116B-3 10020 (62.1) AE16KNSO_B H2117B-3 11025 (78.2) AE16LNSO_ H2022-3 15030 (92.0) AE16MNSO_ H2023-3 20040 (119.6) AE16NNSO_ H2024-3 200


STARTER HEATER LPJ_SP LP-CCHP (FLC) NUMBER ELEMENT CLASS J CLASS CC0.75 (1.3) AE16ANSO_C H2104B-3 3 31 (1.7) AE16ANSO_C H2105B-3 3 3†1.5 (2.4) AE16ANSO_C H2106B-3 6 62 (2.7) AE16ANSO_C H2107B-3 6 63 (3.9) AE16ANSO_C H2108B-3 10 155 (6.1) AE16ANSO_C H2109B-3 15 207.5 (9.0) AE16BNSO_C H2110B-3 2010 (11.0) AE16CNSO_C H2111B-3 2015 (17.0) AE16DNSO_C H2112B-3 3520 (22.0) AE16ENSO_C H2113B-3 4525 (27.0) AE16FNSO_B H2114B-3 5030 (32.0) AE16GNSO_B H2115B-3 7040 (41.0) AE16HNSO_B H2116B-3 9050 (52.0) AE16KNSO_B H2116B-3 10060 (62.0) AE16LNSO_ H2021-3 11075 (77.0) AE16LNSO_ H2022-3 150100 (99.0) AE16MNSO_ H2023-3 200125 (125.0) AE16NNSO_ H2024-3 200


STARTER HEATER LPJ_SP LP-CCHP (FLC) NUMBER ELEMENT CLASS J CLASS CC0.5 (1.1) AE16ANSO_C H2104B-3 3 30.75 (1.6) AE16ANSO_C H2105B-3 3 3†1 (2.1) AE16ANSO_C H2106B-3 6 61.5 (3.0) AE16ANSO_C H2106B-3 6 62 (3.4) AE16ANSO_C H2107B-3 6 6†3 (4.8) AE16ANSO_C H2108B-3 10 155 (7.6) AE16BNSO_C H2110B-3 15 257.5 (11.0) AE16CNSO_C H2111B-3 2010 (14.0) AE16DNSO_C H2111B-3 3015 (21.0) AE16ENSO_C H2113B-3 4520 (27.0) AE16FNSO_B H2114B-3 5025 (34.0) AE16GNSO_B H2115B-3 7030 (40.0) AE16HNSO_B H2116B-3 9040 (52.0) AE16JNSO_B H2116B-3 10050 (65.0) AE16KNSO_B H2117B_3 11060 (77.0) AE16LNSO_ H2022-3 15075 (96.0) AE16MNSO_ H2023-3 200100 (124.0) AE16NNSO_ H2024-3 200


STARTER HEATER LPJ_SP LP-CCHP (FLC) NUMBER ELEMENT CLASS J CLASS CC0.5 (2.2) AE16ANSO_C H2106B-3 6 60.75 (3.2) AE16ANSO-C H2107B-3 6 6†1 (4.2) AE16ANSO-C H2108B-3 10 151.5 (6.0) AE16ANSO-C H2109B-3 15 202 (6.8) AE16BNSO_C H2109B-3 15 203 (9.6) AE16BNSO_C H2110B-3 205 (15.2) AE16DNSO_C H2112B-3 307.5 (22.0) AE16ENSO_C H2113B-3 4510 (28.0) AE16FNSO_B H2114B-3 5015 (42.0) AE16HNSO_B H2116B-3 9020 (54.0) AE16JNSO_B H2117B-3 11025 (68.2) AE16KNSO_B H2117B-3 11030 (80.0) AE16LNSO_ H2022-3 15040 (104.0) AE16MNSO_ H2023-3 20050 (130.0) AE16NNSO_ H2024-3 200

“-” Empty space designates where coil suffix must be added.† May be too small to allow some motors to start.



Cutler Hammer Freedom Series — IEC (UL & CSA Verified)

200 Volt, Three-Phase MotorsSTARTER MAX FUSENUMBER LPJ_SP LP-CC

HP (FLC) (Fixed Heaters) CLASS J CLASS CC0.5 (2.5) AE17ANSO_FJ 6 60.75 (3.7) AE17ANSO_FK 6 61 (4.8) AE17ANSO_FL 10 151.5 (6.9) AE17ANSO_FM 15 152 (7.8) AE17BNSO_FP 17.5 253 (11.0) AE17CNSO_FQ 20 20†5 (17.5) AE17DNSO_FR 357.5 (25.3) AE17FNSO_FT 5010 (32.2) AE17HNSO_KC 7015 (48.3) AE17JNSO_KE 10020 (62.1) AE17KNSO_KF 110


HP (FLC) (Fixed Heaters) CLASS J CLASS CC0.75 (1.3) AE17ANSO_FF 2 2†1 (1.7) AE17ANSO_FG 3 3†1.5 (2.4) AE17ANSO_FH 3† 3†2 (2.7) AE17ANSO_FJ 6 63 (3.9) AE17ANSO-FL 10 155 (6.1) AE17ANSO_FM 15 157.5 (9.0) AE17BNSO-FP 20 20†10 (11.0) AE17CNSO_FQ 20 20†15 (17.0) AE17DNSO_FR 3520 (22.0) AE17ENSO_FS 4525 (27.0) AE17FNSO_FT 6030 (32.0) AE17GNSO_KC 7040 (41.0) AE17HNSO_KD 9050 (52.0) AE17KNSO_KE 110


HP (FLC) (Fixed Heaters) CLASS J CLASS CC0.5 (1.0) AE17ANSO_FF 2 20.75 (1.6) AE17ANSO_FG 3 31 (2.1) AE17ANSO_FH 3 3†1.5 (3.0) AE17ANSO_FJ 6 62 (3.4) AE17ANSO_FK 6 6†3 (4.8) AE17ANSO_FM 10 155 (7.6) AE17BNSO_FN 15 157.5 (11.0) AE17CNSO_FQ 20 20†10 (14.0) AE17DNSO_FR 30 30†15 (21.0) AE17ENSO_FS 4520 (27.0) AE17FNSO_FT 6025 (34.0) AE17GNSO_KC 7030 (40.0) AE17HNSO_KD 9040 (52.0) AE17JNSO_KE 11050 (65.0) AE17KNSO_KF 110


HP (FLC) (Fixed Heaters) CLASS J CLASS CC0.5 (2.2) AE17ANSO_FH 3† 3†0.75 (3.2) AE17ANSO_FK 6 6†1 (4.2) AE17ANSO_FK 6† 6†1.5 (6.0) AE17ANSO_FM 15 152 (6.8) AE17BNSO_FN 15 153 (9.6) AE17CNSO_FP 20 20†5 (15.2) AE17DNSO_FR 30 30†7.5 (22.0) AE17ENSO_FS 4510 (28.0) AE17FNSO_FT 6015 (42.0) AE17HNSO_KD 9020 (54.0) AE17JNSO_KE 11025 (68.2) AE17KNSO_KF 110

“-” Empty space designates where coil suffix must be added.† May be too small to allow some motors to start.



Cutler Hammer Freedom Series — NEMA (UL & CSA Verified)


STARTER HEATER LPN-RK_SPHP (FLC) SIZE CAT. # ELEMENT CLASS RK10.5 (2.5) 00 AN16AN0_C H2006B-3 4.50.75 (3.7) 00 AN16ANO_C H2008B-3 81 (4.8) 00 AN16ANO_C H2009B-3 101.5 (6.9) 0 AN16NDO_C H2010B-3 152 (7.8) 0 AN16BNO_C H2010B-3 17.53 (11.0) 0 AN16BNO_C H2011B-3 207.5 (25.3) 1 AN16DNO_B H2013B-3 4510 (32.2) 2 AN16GNO_B H2015B-3 7015 (48.3) 3 AN16KNO_ H2021-3 10020 (62.1) 3 AN16KNO_ H2021-3 11025 (78.2) 3 AN16KNO H2022-3 17540 (119.6) 4 AN16NNO_ H2024-3 20050 (149.5) 5 AN16SNO_B H2007B-3 30060 (166.8) 5 AN16SNO_B H2007B-3 35075 (220.8) 5 AN16SNO_B H2008B-3 400


STARTER HEATER LPS-RK_SPHP (FLC) SIZE CAT. # ELEMENT CLASS RK10.75 (1.3) 00 AN16ANO_C H2005B-3 2.81 (1.7) 00 AN16ANO_C H2005B-3 2.81.5 (2.4) 00 AN16ANO_C H2006B-3 4.52 (2.7) 00 AN16ANO_C H2007B-3 5.63 (3.9) 0 AN16BNO_C H2008B-3 85 (6.1) 0 AN16BNO_C H2009B-3 127.5 (9.0) 1 AN16DNO_B H2010B-3 17.510 (11.0) 1 AN16DNO_B H2011B-3 2015 (17.0) 2 AN16GNO_B H2012B-3 3520 (22.0) 2 AN16GNO_B H2013B-3 4525 (27.0) 2 AN16GNO_B H2014B-3 6030 (32.0) 3 AN16KNO_ H2019-3 6040 (41.0) 3 AN16KNO_ H2020-3 8050 (52.0) 3 AN16KNO_ H2021-3 11060 (62.0) 4 AN16NNO_ H2021-3 11075 (77.0) 4 AN16NNO_ H2022-3 150100 (99.0) 4 AN16NNO_ H2023-3 200125 (125.0) 5 AN16SNO_B H2006B-3 250150 (144.0) 5 AN16SNO_B H2007B-3 300200 (192.0) 5 AN16SNO_B H2007B-3 400


STARTER HEATER LPS-RK_SPHP (FLC) SIZE CAT. # ELEMENT CLASS RK10.5 (1.1) 00 AN16ANO_C H2004B-3 20.75 (1.6) 00 AN16ANO_C H2005B-3 2.81 (2.1) 00 AN16ANO_C H2006B-3 4.51.5 (3.0) 00 AN16ANO_C H2007B-3 5.62 (3.4) 00 AN16ANO_C H2008B-3 73 (4.8) 0 AN16BNO_C H2009B-3 105 (7.6) 0 AN16BNO_C H2010B-3 157.5 (11.0) 1 AN16DNO_B H2011B-3 2010 (14.0) 1 AN16DNO_B H2012B-3 3015 (21.0) 2 AN16GNO_B H2013B-3 4520 (27.0) 2 AN16GNO_B H2014B-3 6025 (34.0) 2 AN16GNO_B H2015B-3 7030 (40.0) 3 AN16KNO_ H2020-3 8040 (52.0) 3 AN16KNO_ H2021-3 11050 (65.0) 3 AN16KNO_ H2022-3 12560 (77.0) 4 AN16NNO_ H2022-3 15075 (96.0) 4 AN16NNO_ H2023-3 200100 (124.0) 4 AN16NNO_ H2024-3 200125 (156.0) 5 AN16SNO_B H2007B-3 350150 (180.0) 5 AN16SNO_B H2007B-3 400200 (240.0) 5 AN16SNO_B H2008B-3 400


STARTER HEATER LPN-RK_SPHP (FLC) SIZE CAT. # ELEMENT CLASS RK10.5 (2.2) 00 AN16ANO_C H2006B-3 4.50.75 (3.2) 00 AN16ANO_C H2007B-3 5.61 (4.2) 00 AN16ANO_C H2008B-3 81.5 (6.0) 00 AN16ANO_C H2009B-3 122 (6.8) 0 AN16BNO_C H2009B-3 123 (9.6) 0 AN16BNO_C H2011B-3 205 (15.2) 1 AN16DNO_B H2012B-3 307.5 (22.0) 1 AN16DNO_B H2013B-3 457.5 (22.0) 2 AN16GNO_B H2013B-3 4510 (28.0) 2 AN16GNO_B H2014B-3 6015 (42.0) 2 AN16GNO_B H2015B-3 7020 (54.0) 3 AN16KNO_ H2021-3 11025 (68.2) 3 AN16KNO_ H2022-3 15030 (80.0) 3 AN16KNO_ H2022-3 17530 (92.0) 4 AN16NNO_ H2023-3 20040 (104.0) 4 AN16NNO_ H2023-3 20050 (130.0) 4 AN16NNO_ H2024-3 20060 (145.0) 5 AN16SNO_B H2007B-3 30075 (192.0) 5 AN16SNO_B H2007B-3 400100 (248.0) 5 AN16SNO_B H2008B-3 400

“_” Empty space designates where coil suffix must be added.


Variable frequency drives, soft starters, and other power electronic devices arebecoming increasingly more common in motor circuits. These power electronic devices are much more sensitive to the damaging effects of short-circuit currents and therefore require a level of protection that may not be provided by circuit breakers or conventional fuses. In the past, manufacturersof these devices provided internal protection in the form of high speed fuses,which are much more current-limiting than conventional branch circuit fuses.However, as drives and soft-starters have grown smaller and smaller, theinternal fuses have been omitted by starter manufacturers in favor of short-circuit testing to UL standards with external protection.

Now, in many cases, drives are shipped without fuses, and it is the responsibility of the installer or owner to provide this protection. During thedesign and installation stages, it is important to check the data sheets, label,or manual of the power electronic device to understand the short-circuit protection options. With the proper fuse selection, a safer installation mayresult, with better power electronic device protection. This can result in moreproductive operation and higher short-circuit current ratings.

Short Circuit Testing

UL 508C, the standard to which drives and soft starters are listed, provides atleast two levels of short-circuit protection. The Standard Fault Current test ismandatory to be listed, and there is an optional High Fault Current test whichcan be performed during the listing of the device.

UL also provides an “Outline of Investigation”, UL 508E, which can be used toverify Type 2 (no damage) protection when protected by a specific current-liming overcurrent protective device.

1. The Standard Fault Current tests evaluate the drives at rather low levelsof fault current, and significant damage to the drive is permitted – i.e. the drivedoes not have to be operational after the testing. Examples of the level of faultcurrents are 5000 amps for 1.5 to 50Hp drives and 10,000 amps for 51 to200Hp drives.

The drive must be marked with the maximum short-circuit current rating (atwhich it was tested). It does not have to be marked with the type overcurrentprotective device if it has followed certain procedures. However, the manufacturer can list the drive with fuse protection only and then the label willbe marked to identify that branch-circuit protection shall be provided by fusesonly (either high speed or branch circuit types).

2. The High Fault Current tests can be at any level of short-circuit currentabove the standard fault current tests. Significant damage to the drive is permitted – i.e. the drive does not have to be operational after the testing.

The drive must be marked with the short-circuit current rating at which it wastested. In addition it must be marked with the type overcurrent protectivedevice(s) that were used for the test. If current-limiting branch circuit fuses(such as Class J, T, CC, etc.) are used, then the tests are conducted with special umbrella fuses. Umbrella fuses have energy let-through levels greaterthan the UL limits for various classes and amp rated fuses. These umbrellafuses have energy let-through levels that are greater than commercially available fuses.

A drive can be listed and marked for either fuses or circuit breakers or both.Typically the drives are marked for protection only by fuses since current-limitation is necessary to meet the requirements set forth in the product standard. If the unit is marked for fuse protection only, then only fuses can beused for protection of that drive unit and the proper type and size must beused. Some drives will be marked for protection by a specific amp and classfuse (for branch circuit fuses).

3. Type 2 (no damage) is the best level of protection. With this protection, thedrive cannot be damaged, and the unit is tested and marked with a high short-

circuit current rating. It must be able to be put into service after the fault hasbeen repaired and the fuses replaced.

A clear understanding of semiconductor device types is needed when considering Type 2 coordination with variable speed drives. Only silicon controlled rectifier (SCR), gate turn-off thyristor (GTO) and diode baseddevices can achieve Type 2 protection, and it is only possible with properlyselected high speed fuses. Thyristor type devices can effectively share energyequally across the PN junction. They have short-circuit energy withstand levelsthat are lower than conventional branch circuit fuse let-throughs, however,Type 2 protection can be achieved with properly selected high-speed fuses.

Equipment that use insulated gate bipolar transistors (IGBT) high frequencydevices cannot presently achieve Type 2 protection levels. IGBTs do not haveenough surface area contact with the actual junction to help share energyevenly. IGBTs share energy very well during long duration pulses, but duringshort duration, high amplitude faults most of the energy is being carried by anindividual bonding wire or contact. Current fuse technology cannot effectivelyprotect the bonding wires of IGBT based equipment from overcurrent conditions, and therefore Type 2 no damage protection is not possible.However, current high speed fuse technology can protect IGBTs from caserupture under short-circuit conditions.

Protecting Drives and Soft Starters

There are two important considerations when selecting protective devices fordrives and soft starters:

1. The device must be able to withstand the starting current and duty cycle of themotor circuit without melting.

2. The device must be able to clear a fault quickly enough to minimize damage tothe drive or soft starter.

The melting time current characteristic curve can be used to verify a fuse’sability to withstand starting currents and duty cycle, while clearing I2t at theavailable fault current can be used to verify the various levels of protectiondescribed earlier. For more information on proper sizing of high speed fuses,please see the High Speed Application Guide, available on www.cooperbussmann.com.

There are two types of faults that can occur with drives and soft starters –internal faults and external faults. Internal faults are caused by failures of components within the drive or soft starter, such as failure of the switchingcomponents (SCRs, thyristors, IGBTs, etc.) External faults occur elsewhere inthe circuit, such as a motor winding faulting to the grounded case.

Most soft starters utilize either silicon-controlled rectifiers (SCRs) or gate turn-off thyristors (GTOs) for power conversion. These devices depend on highspeed fuses for protection from both internal and external faults. If high speedfuses are properly selected, Type 2 protection may be achieved.

Modern adjustable speed drives often utilize insulated gate bipolar transistors(IGBTs) as the main switching components. IGBTs have drastically lower energy withstands than SCRs and GTOs, which makes protection of thesecomponents very difficult. For external faults, drives using IGBTs incorporateelectronic protection that shut off the switching components when fault currents are detected. However, over time, transient voltage surges can leadto the electronics’ inability to shut off the IGBT switching. This can lead tointernal faults as the IGBTs fail and rupture. The violent rupture of IGBTs cancause additional faults to adjacent components as a result of the expelling ofgases and shrapnel. High speed fuses may not be able to prevent the IGBTfrom failing, but properly selected high speed fuses can prevent the violentrupture of IGBT devices and the resultant additional faults and safety hazard.

Large adjustable speed drives often include internal high speed fusing in orderto protect against rupturing of components. However, small drives (below

Motor Circuits With Power Electronic Devices

Power Electronic Device Circuit Protection


200Hp) often do not include internal fusing, so the user must supply protection. It is important to note that Type 2 or “no damage” protection ofdevices utilizing IGBTs is not possible with current fuse technology. However,with properly sized and applied high speed fuses, repair, replacement and lostproductivity costs will be minimized.

Fuses for Specific Drives

Selection tables for various manufacturers’ drives with Cooper Bussmann fuserecommendations by specific drive model / part # are available onwww.cooperbussmann.com.

Complying with the NEC®

Traditional high speed fuses come in many different shapes and sizes. Theycan be recognized to UL and CSA standard 248-13. This standard does notcontain requirements for overload performance or dimensions, therefore, thesefuses are not considered branch circuit protection per the NEC®. However,NEC® article 430, which covers motor circuits, does allow high speed fuses tobe used in lieu of branch circuit protection when certain conditions are met.

New: Cooper Bussmann

Series DFJ (Class J) Drive Fuse

The Cooper Bussmann Drive Fuse (Series DFJ) provides the performance ofa high speed fuse for protection of semiconductor devices and meets ULlisting requirements for Class J fuses. Unlike traditional high speed fuses, theCooper Bussmann DFJ Drive Fuse is suitable for branch circuit protection (perthe NEC®), and fits in standard Class J fuse clips, holders and disconnects.



The use of high speed fuses for protection of power electronic devices in lieuof normal branch circuit overcurrent protective devices is allowed per NEC®

430.52(C)(5), which states that “suitable fuses shall be permitted in lieu ofdevices listed in Table 430.52 for power electronic devices in a solid statemotor controller system, provided that the marking for replacement fuses isprovided adjacent to the fuses.” Please note that this only allows the use ofhigh speed fuses in lieu of branch circuit protection.

Per NEC® 430.124(A), if the adjustable speed drive unit is marked that itincludes overload protection, additional overload protection is not required.

NEC® 430.128 states that the disconnecting means for an adjustable speeddrive system shall have a rating not less than 115% of the rated input currenton the drive unit. This means that the disconnect required in front of eachdrive unit must be sized in accordance with the drive unit rated input current,not the motor current. When connecting conductors between the disconnecting means and the drive, NEC® 430.122(A) states that “Circuit conductors supplying power conversion equipment included as part of anadjustable speed drive system shall have an ampacity not less than 125% ofthe rated input to the power conversion equip-ment.” This means that the conductors shall be sized to the rated current on the conversion unit nameplate and not the motor rating.

Figure 1 - The above comparison of time-current characteristics

shows the superior performance of the Cooper

Bussmann DFJ Drive Fuse at three critical performance

points.

Figure 1 represents the typical starting parameters of an AC drive, as well asthe melting characteristics of a traditional, non-time delay, Class J fuse andthe new DFJ Drive Fuse from Cooper Bussmann. There are three critical performance points that are shown:

A: Continuous Region (Amp Rating) – The continuous current-carrying capacity ofthe DFJ Drive Fuse is identical to the tradition Class J fuse. This is key to meetingUL branch circuit opening time requirements.

B: Overload Region – Traditional, non-time delay Class J fuses have far less overload withstand than the new DFJ Drive Fuse from Cooper Bussmann. Thisextended withstand allows for more reliable protection without nuisance openings.

C: Short-Circuit Region – The DFJ Drive Fuse has far lower required melting current and clearing I2t than the traditional Class J fuse, allowing for greater cur-rent limitation and lower energy let-through.


Figure 2 – The graph shown above is a representation of the ener-

gy let-through by a circuit breaker, a standard, non-time

delay Class J fuse, and the new Cooper Bussmann DFJ

Drive Fuse during the same magnitude fault.

Under fault conditions, the DFJ Drive Fuses clear the fault much faster, andare much more current-limiting, than circuit breakers and standard, non-timedelay Class J fuses. The DFJ Drive Fuse has high speed fuse performanceunder fault conditions, which means high speed fuse protection for powerelectronic devices.




Group Fusing

430.53 covers the requirements for group motor installations. Two or moremotors, or one or more motors and other loads may be protected by the samebranch circuit overcurrent protective device if:

(A) All motors are 1Hp or less, protected at not over 20A at 120V or at 15A at 600V or less, the full load amp rating of each motor does not exceed 6 amps, the device rating marked on the controller is not exceeded, and individual overload protection conforms to 430.32.

or (B) The circuit for the smallest motor is protected per 430.52; i.e. the branch circuit overcurrent protective device protecting the group meets 430.52 for the circuit with the smallest motor.

or (C) The complete assembly of properly sized branch circuit overcurrent protective device, controller, and overload devices is tested, listed, and marked for a group installation.

and one of the following:

(D)(1) the ampacity of conductors to motors are no less than the ampacity of the branch circuit conductors

or (D)(2) the conductors to motors have at least 1⁄3 the ampacity of the branch circuit conductors, are protected from physical damage and are not more than 25 feet long before being connected to the motor overload device.

or (D)(3) The tap conductors from the branch circuit overcurrent protective device (OCPD) to each manual motor controller* marked “Suitable for Tap Conductor Protection in Group Installations” shall have an ampacity of at least 1⁄10** the amp rating of the branch circuit OCPD. These tap conductors shall be 10 feet or less, enclosed and protected from physical damage; if not, then these conductors shall have an ampacity of at least the same as the branch circuit conductors. The conductor ampacity from the controller to the motor shall be per 430.22.

Another Approach

Typically, group motor installations protected by one branch circuit OCPDand group switching are considered for cost savings. However, cautionshould be taken where a conductor is expected to be protected by an overcurrent protective device significantly greater than the conductorampacity. The NEC® implies this caution in 430.53(C) FPN, referring backto 110.10. Under short circuit conditions, smaller conductors are difficult toprotect, especially by non current-limiting protective devices. Also, groupprotection sacrifices selective coordination; a fault on one circuit shuts downall the loads on the group circuit. As a better alternative, consider groupswitching with fuses/fuse holders for each motor or other type load. Seepage 144 on group switching. Use holders such a OPM-NG, OPM1038SW,OPM1038, CH Series, JT Series or TCFH & TCF.

* If a manual motor controller is utilized for this application, it must:

1. Be marked “Suitable for Tap Conductor Protection in Group Installations”.

2. Be applied within its voltage limitations (slash voltage rating), if applicable.

3. Be protected by a branch circuit protective device that meets all limitations of themanual motor controller listing criteria. For instance, it may be required to be protected by a fuse no greater than a specified amp rating.

** Even though permitted by this section, the branch circuit overcurrent protective device may not be able to provide adequate short-circuit protectionfor a conductor having an ampacity 1/10 the rating of the branch circuit overcurrent protective device. This is especially the case with non current-limiting branch circuit protective devices. It is suggested an engineering conductor protection analysis be conducted for this application (110.10).

Motor Circuit Protection

Group Motor Protection

Group Motor Installation (Group Fusing) NEC® 430.53

M M

Branch CircuitFuse

Branch CircuitConductor

Taps

Single MotorBranch Circuit

Must Meet 430.52

Group Motor Protection

YES

Ok to use GroupMotor Protection

but must still meetGroup Switching430.112. (Motorsserved by a single

disconnecting means)

[430.53 (D)(2)]Are tapped

conductors toeach overloaddevice 25 feet

or less?

[430.53 (D)(2)]Do tapped conductors

to each motor havean ampacity of at

least 1/3 of theincoming branchcircuit conductor?

Group Motorinstallation not

possible. Each motorbranch circuit must beindividually protected

by a branch circuitovercurrent device.

[430.53 (C)]Is the entire assemblyof Branch Circuit Over

current Devices andmotor controllerstested, listed and

marked for a groupinstallation?

[430.53 (B)]Is smallest motor

protected accordingto 430.52?

[430.53 (A)]Are all motors1 HP or less?

Group MotorApplication

(Group Fusing)Must Meet 430.53

NO

[430.53(D)(3)]Do tap conductors from branch

circuit OCPD that supplymanual motor controller* which

is marked "Suitable for TapConductor Protection in Group Installations" have an ampacityof at least 1/10** the rating of

the branch circuit OCPD?

[430.53(D)(3)]Are these tap conductors

(lineside of controller) 10 feetor less, enclosed, and protected from physical

damage?

[430.53(D)(3)]Is the ampacity of each tap

conductor from controller to motor per 430.22?

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

NO

NO

YES

[430.53(D)(1)Do conductors to motors have

same ampacity as branch circuit conductors?

NOYES

motor starter protection

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