TYPES DSII AND DSLII METAL ENCLOSEDLOW VOLTAGE POWER CIRCUIT BREAKERS

Cutler-Hammer Products

Ratings

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Low Voltage AC Power Circuit BreakersTypes DSII and DSLII...The Best Has Become Better

Proven Technology with theEnhancements and AdditionalRatings Our Customers Asked For

For over 25 years, Types DS and DSL LowVoltage AC Power Circuit Breakers havecontinually set industry standards for qual-ity, reliability, and extended operating liferesulting in the largest installed base oflow voltage power circuit breakers.

But electrical distribution system require-ments are changing…and our customersasked for enhancements that provide thecapabilities of more accessories, more com-munications, easier wiring, and improvedprotection. And they emphasized that weadd these enhancements without alteringthe breakers’ proven construction and per-formance characteristics.

That’s just what we did…and the enhancedDSII and DSLII Breakers provide exactlywhat our customers require. We even addednew ratings to help meet their expandingdistribution system requirements.

Where They re Used

DSII and DSLII Breakers are designedspecifically for use in metal-enclosed lowvoltage switchgear assemblies appliedat nominal system voltages of 208-240,480, or 600V AC. Six continuous currentframe sizes, 800 through 5,000 amperes arecovered by just three breaker frame sizes.

Above 240V AC, DSII and DSLII Breakershave a short time rating that is equal to theinstantaneous rating. This provides forbetter downstream coordination, allowingthe breaker closest to the fault to trip.

DSII and DSLII Breakers are also fullyinterchangeable, meaning they can beplaced into compartments having thesame dimensions and ratings.

100 Percent Rated

DSII and DSLII Beakers are 100 percentrated, UL listed, and are built and testedto applicable NEMA, ANSI, IEEE, and ULstandards in an ISO 9001 certified facility.

Quality and Reliability

Cutler-Hammer performs consistent en-durance and reliability tests on DSII andDSLII Breakers.

■ Mini-Life Tests. Daily, a breaker israndomly selected from the productionline and tested for an average 150mechanical operations to assureperformance as required.

■ Maxi-Life Tests. MTBF testing con-tinuously tests DSII and DSLII Break-ers until they fail. This identifies anyweak links in the breaker mechanismand also demonstrates how designchanges improve the performanceand quality of the breakers.

➀ Also short time ratings.

➁ Short circuit ratings of nonautomatic breakersexcept the DSII-840 and DSII-850 which are 65,000.

Note: DSLII-308, DSLII-516, and DSLII-620include current limiters integral with drawoutbreaker elements. DSLII-632 includes DSII-632Breaker and DSLII-840 includes DSII-840 Breakerand DSII-FT40 drawout fuse truck, in separateinterlocked compartments.

Type DSII-620 Low Voltage AC Power Circuit Breaker (left) and Type DSLII-308 (right) both shown with optionalDigitrip RMS 910 Trip Units.

➀ Breaker and drawout fuse truck in separate interlocked compartments.

Breaker Weights/Dimensions

Breaker Type Frame Size Dimensions – Inches Weight – PoundsAmperes

Height Width Depth

Type DSII Circuit Breakers

DSII-308 800 18.22 18.38 21.06 150DSII-508 800 18.22 18.38 21.06 195DSII-608 800 18.22 18.38 21.06 200DSII-516 1600 18.22 18.38 21.06 195DSII-616 1600 18.22 18.38 21.06 200DSII-620 2000 18.22 18.38 21.06 200DSII-632 3200 29.56 18.62 21.06 300DSII-840 4000 29.56 30.12 25.93 400DSII-850 5000 29.56 30.12 25.93 400

Type DSLII Circuit Breakers

DSLII-308 800 18.22 18.38 29.06 200DSLII-516 1600 18.22 18.38 29.06 260DSLII-620 2000 29.53 18.62 29.06 275DSLII-632➀ 3200 29.56 18.62 19.68 325DSLII-840➀ 4000 29.56 30.12 24.56 430

Breaker Type Frame Interrupting Ratings, rms Symmetrical AmperesSize

With Instantaneous Trip Without Instantaneous Trip➀➁Amperes

208-240V 480V 600V 208V-240V 480V 600V

Type DSII Circuit Breakers

DSII-308 800 42,000 30,000 30,000 30,000 30,000 30,000DSII-508 800 65,000 50,000 42,000 50,000 50,000 42,000DSII-608 800 65,000 65,000 50,000 65,000 65,000 50,000DSII-516 1600 65,000 50,000 42,000 50,000 50,000 42,000DSII-616 1600 65,000 65,000 50,000 65,000 65,000 50,000DSII-620 2000 65,000 65,000 50,000 65,000 65,000 50,000DSII-632 3200 85,000 65,000 65,000 65,000 65,000 65,000DSII-840 4000 130,000 85,000 85,000 85,000 85,000 85,000DSII-850 5000 130,000 85,000 85,000 85,000 85,000 85,000

Type DSLII Circuit Breakers

DSLII-308 800DSLII-516 1600DSLII-620 2000 All Types 200,000 on System Voltages 600 or BelowDSLII-632 3200DSLII-840 4000

Low Voltage AC Power Circuit Breakers

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New Secondary ContactsProvide for More Accessoriesand Easier Wiring

Up to 60 Contact Points and OnlyOne Standard Connection Drawing

The one standard connection drawingfeature provides significant time savings…because a switchgear builder can prewirea harness prior to installation, making con-nections to the secondary and zone selec-tive interlocking (ZSI) contacts when thebreaker is being installed in the cell.

New Secondary Contacts

DSII and DSLII Breakers are now availablewith up to 48 points of secondary contactin modules of 12 contacts each. Moresecondary contacts facilitate wiring whileproviding for nearly twice the number ofbreaker accessory connections.

Typical Cell Can Be Prewiredand Ready to Accept DSII Circuit Breaker

A typical OEM cell shown prewired and ready toaccept the breaker as delivered from the factory,assuring a positive connection of all contacts. Wiringfor zone selective interlocking and/or IMPACC /PowerNet communications is connected in a pinwhich is easily inserted into the socket plug.

This design also provides for ease of wiring when acustomer’s requirements increase, requiring theaddition of accessories, zone selective interlocking,or IMPACC / PowerNet communications.

Zone Selective Interlocking

Fault 1There are no interlocking signals. The mainbreaker trip unit will initiate the trip instanta-neously.

Fault 2The feeder breaker trip unit will initiate the tripinstantaneously to clear the fault; and Zone 2will send an interlocking signal to the Zone 1 tripunit. The Zone 1 trip unit will begin to time out, andin the event that the feeder breaker in Zone 2would not clear the fault, the main breaker inZone 1 will clear the fault in 0.5 seconds.

Fault 3The branch breaker trip unit will initiate the tripinstantaneously to clear the fault; and Zone 3 willsend an interlocking signal to the Zone 2 tripunit; and Zone 2 will send an interlocking signalto Zone 1.

Zone 1 and Zone 2 trip units will begin to timeout, and in the event that the branch breakerin Zone 3 would not clear the fault, the feederbreaker in Zone 2 will clear the fault in 0.3seconds. Similarly, in the event that the feederbreaker in Zone 2 would not clear the fault,the main breaker in Zone 1 will clear the fault in0.5 seconds.

Standard Breaker Secondary Wiring Diagram Viewed from Front View of Switchgear Cell

New Internal Zone SelectiveInterlocking Contacts

For customers whose distribution systemsrequire the added protection of zone selec-tive interlocking (ZSI), we placed the float-ing design socket plug – with 12 points ofcontact – internal to the breaker, next to thesecondary disconnect contacts providingfor ease of wiring.

Zone Selective Interlocking ProvidesPositive System Coordination withoutTime Delays

Cutler-Hammer pioneered ZSI, which al-lows the breaker closest to the fault to tripwithout any preset time delay. Through ahardwired connection between a down-stream breaker’s Digitrip Trip Unit and aDSII or DSLII main breaker’s Digitrip TripUnit, a restraining signal is sent upstream.This allows the breaker closest to the faultto trip instantaneously while the remainderof the distribution system remains on line,thus avoiding unnecessary and oftencostly downtime.

IMPACC / PowerNet Communications

The floating design socket plug is alsoused when customers require the highlyreliable, comprehensive power monitoringcapabilities provided by the IMPACC /PowerNet communications system.

C9C10 SHIELDC11 NPOW

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1 122 3 4 5 6 7 8 9 10 11 13 2414 15 16 17 18 19 20 21 22 23

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789

456

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UV F1 UV LCS ATR ALARMS

OTS 3 or OTSRESET NO NO NO NC NC NC

NO NO ST GF NC NC

Auxiliary Switch 2

Auxiliary Switch 1 Auxiliary Switch 1

F0orF1

A6 SR COMMOTSR

ATRPWR

MOT OTS 1 & 2

Zone Interlock/Communication 12 Point Plug Detail

Zone InterlockC6 COM1C7 COM2C8

G

Zone Interlock/Communication Plug

Z4 GOUTZ5 GIN

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Z1 DGZ2 SOUTZ3 SIN

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6 C12 COM CLOSE12

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Communications9

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Zone 1

Zone 2

Zone 3

Fault 1

BreakerNumber 1

BreakerNumber 2

BreakerNumber 3

Ground FaultSetting:1200A Pickup0.5 Seconds

Time Delay

Ground FaultSetting:600A Pickup0.3 Seconds

Time Delay

Ground FaultSetting:300A PickupNo Time Delay

Zone SelectiveInterlock Wiring

LOAD

Fault 2

Fault 3

Cutler-Hammer ProductsTypes DSII and DSLII Breakers ProvideSafety, Security, and Easier Operation

Built-In Safety FeaturesProvide Optimum Operator Safetyand System Security

■ Four position automatic mechanicalinterlocking system when thebreaker is in a breaker compartment.1. Remove. The breaker is nearest thefront of the compartment and open withthe closing springs discharged. It can-not be closed electrically or manually.It is padlockable in this position.2. Disconnect. A storage positionwith the breaker in the compartmentbut open and disconnected. It can bepadlocked in place.3. Test. Main disconnects are disen-gaged, secondary contacts are engag-ed. All functions of the breaker andtrip unit can be tested in this position.4. Connected. Both main and second-ary contacts are connected and thebreaker is ready for normal operation.

■ Deadfront faceplate shield isolatesthe operator from high voltage when thebreaker is energized. When the breakeris in a compartment, the compartmentdoor acts as a double deadfront shield.

■ Padlocking provision enables thebreaker to be padlocked in a trip-freecondition. The breaker cannot beclosed or moved with the leveringdevice. The padlock itself is placed inthe padlock plate that extends throughthe front of the breaker faceplate. Thishelps prevent unauthorized rackingand operation of the breaker.

■ Glass polyester insulation providessufficient mechanical strength to resistshort circuit forces and is highly resis-tant to heat and arcing.

■ Interference interlocks are providedto prevent insertion of breakers withmismatched disconnects or insuffi-cient interrupting ratings into compart-ments carrying a higher current.

■ Electrical lockout for manually oper-ated breakers prevents closing of anunenergized circuit. When the circuitis energized, the breaker can be closedby pushing the push-to-close mecha-nism release button.

■ Closed breaker interlock preventsoperation of the spring release whenthe breaker is already closed.

DE-ION¤ Arc ExtinguishersProvide Superior Arc Quenching

Cutler-Hammer developed the DE-ION arcextinguisher that assists in the interruptionof high energy faults by dissipating thelarge amounts of arc energy. Each arcextinguisher includes a series of steelplates that attract the arc and interrupt itby cooling and stretching the arc.

User Friendly Operation — Types DSII and DSLII Breakers

Rear and front views of Type DSII-620 Low Voltage AC Power Circuit Breaker.

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■9 Push-to-Close Mechanism Release Button

■10 Spring Charge Indicator

■11 Interphase Barriers

■12 Secondary Disconnects

■13 Zone Selective Interlock/IMPACC / PowerNet Communications Plug

■14 Main Disconnects

■15 Levering Device Arm

■16 DE-ION Arc Chute

■1 Standard Digitrip RMS Trip Unit

■2 Drawout Position Indicator

■3 Shutter Covering Access to Levering Shaft(Shown in Closed Position)

■4 Open-Close Indicator

■5 Metal Faceplate Shield

■6 Manual Charge Handle

■7 Padlock Plate

■8 Push-to-Trip Button

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Controls and indica-tors are functionallygrouped on the frontof the breakers.

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Low Voltage AC Power Circuit Breakers

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Types DSII and DSLII Breakers AreSimple to Inspect and Easy to Maintain

Extend Interrupting Ratings up to200 kA rms Symmetrical

DSLII Breakers are a combination of seriesconnected current limiters and standardDSII Breakers…extending the interruptingrating of DSII Breakers up to 200 kA.

Consequently, they’re used on systemswhere the overload protection and switch-ing functions of air power breakers arerequired…and available fault currents ex-ceed the interrupting ratings of the circuitbreakers alone and/or exceed the with-stand and interrupting ratings of down-stream circuit components.

Current Limiters Mounting

800, 1600, and 2000 Ampere Breakers:Integrally mounted in the drawout breaker.3200 and 4000 Ampere Breakers: Mount-ed on separate drawout trucks that fit intocompartments of equal size to their com-patible breakers and are positioned adja-cent to one another.

Exclusive Features

■ Fault Interruption. On overloadsand faults within the breaker inter-rupting rating, the breaker protectsthe limiters. On higher fault currentsexceeding the breaker rating, the limit-ers protect the breaker.

With properly selected and coordinatedlimiters, the breaker itself will clearoverloads and faults within its interrupt-ing rating, leaving the limiters intactand undamaged. The limiters will pro-vide fast interruption of fault currentsbeyond the breaker rating up to amaximum 200 kA rms symmetrical.

■ Single-Phasing Protection. Interlockarrangements trip the breaker wheneverany limiter blows, preventing single-phasing. The breaker cannot be re-closed on a live source unless there arethree unblown limiters on the breaker.

There are three blown limiter indicatorson the breaker faceplate, providing avisual indication when a limiter in anyphase has interrupted a fault.

■ Safety Features. Current limiterson Types DSLII-308, DSLII-516, andDSLII-620 Breakers are accessibleonly when a breaker has been com-pletely withdrawn from its compartment.

For Types DSLII-632 and DSLII-840Breakers, current limiters are mountedon a separate fuse truck. It is key inter-locked with the breaker to preventwithdrawal or insertion unless thebreaker is disconnected.

Designed for Easy Access, Inspection,and Minimal Maintenance

The stored energy mechanism and con-trol devices are easily accessible (in theremove and disconnect positions) and canbe inspected by removing the front panel.Inspection, minor maintenance when re-quired (such as lubricating the mechanism),and accessing the control componentsis simplified.

Additionally, many minor replacementfunctions involving the mechanism, control,and/or accessory devices can be easilyaccomplished.

True Two-Step Stored EnergyMechanism for Manually andElectrically Operated Breakers

“Stored energy” is energy held in waiting,ready to open or close the breaker withinfive cycles or less. The unique cam andspring design provides necessary energyfor a single close-open sequence as wellas the energy for multiple charge-closeoperations such as this possible sequence:charge-close-recharge-open-close-open.

This means the energy required to openthe breaker is always prestored followinga closing operation.

On manually operated breakers, closingsprings are charged by hand. For electri-cally operated breakers, springs are nor-mally charged by an electric motor but canbe manually charged in the absence ofcontrol power.

More Information

Further information and pricing can befound in PL.22B.01.P.E.

Type DSLII Circuit Breakers

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■1 Blown Limiter Indicators

■2 Isolating Transformers for Blown Fuse Indicators

■3 Zone Selective Interlock/IMPACC/PowerNetCommunications Plug

■4 Current Limiters

■5 Secondary Disconnects

■6 Main Disconnects

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Cutler-Hammer Products

RMS 510 RMS 610 OPTIM 750 RMS 810 RMS 910 OPTIM 1050

TRIP UNIT SENSINGrms Sensing Yes Yes Yes Yes Yes Yes

PROTECTION AND COORDINATIONProtection Ordering Options LI, LS, LSI, LIG LI, LSI, LIG LSI(A), LSIG LI, LS, LSI, LIG LI, LS, LSI, LIG LSI(A), LISG

LSG, LSIG LSG, LSIG LSG, LSIG LSG, LSIGFixed Rating Plug (In) Yes Yes Yes Yes Yes YesOvertemperature Trip Yes Yes Yes Yes Yes Yes

Long Adjustable Rating Plug (In) No No No No No NoDelay Long Delay Setting 0.5-1.0 (ln) 0.5-1.0 x (In) 0.4-1.0 x (In) 0.5-1.0 x (In) 0.5-1.0 x (In) 0.4-1.0 x (In)Protection Long Delay Time I2t 2-24 Seconds 2-24 Seconds 2-24 Seconds 2-24 Seconds 2-24 Seconds 2-24 Seconds

Long DelayThermal Memory Yes Yes Yes Yes Yes Yes

High Load Alarm No 0.85 x Ir 0.5-1.0 x Ir 0.85 x Ir 0.85 x Ir 0.5-1.0 x Ir

Short Short Delay Setting 200-600% S1 & S2 x (Ir) 200-600% S1 & S2 x (Ir) 150-800% x (Ir) 200-600% S1 & S2 x (Ir) 200-600% S1 & S2 x (Ir) 150-800% x (Ir)Delay Short Delay Time I2t 100-500 ms 100-500 ms 100-500 ms 100-500 ms 100-500 ms 100-500 msProtection Short Delay Time Flat 100-500 ms 100-500 ms 100-500 ms 100-500 ms 100-500 ms 100-500 ms

Short Delay Time ZSI Yes Yes Yes Yes Yes YesInstan- Instantaneous Setting 200-600% M1 & M2 x (ln) 200-600% M1 & M2 x (ln) 200-800% x (ln) 200-600% M1 & M2 x (ln) 200-600% M1 & M2 x (ln) 200-800% x (ln)taneous Discriminator 0Yes➀ 0Yes➀ Yes 0Yes➀ 0Yes➀ YesProtection Instantaneous Override Yes Yes Yes Yes Yes YesGround Ground Fault Setting 25-100% x (In)➁ 25-100% x (In)➁ 20/25-100%➁ 25-100% x (In)➁ 25-100% x (In)➁ 20/25-100%➁

Fault Ground Fault Delay I2t 100-500 ms 100-500 ms 100-500 ms 100-500 ms 100-500 ms 100-500 msProtection Ground Fault Delay Flat 100-500 ms 100-500 ms 100-500 ms 100-500 ms 100-500 ms 100-500 ms

Ground Fault ZSI Yes Yes Yes Yes Yes YesGround FaultThermal Memory Yes Yes Yes Yes Yes Yes

SYSTEM DIAGNOSTICSCause of Trip LEDs Yes Yes Yes Yes Yes YesMagnitude of Trip Information No Yes Yes Yes Yes YesRemote Signal Contacts No Yes Yes Yes Yes Yes

SYSTEM MONITORINGDigital Display No Yes 0Yes➂ Yes Yes 0Yes➂

Current No Yes Yes Yes Yes YesVoltage No No No No Yes YesPower and Energy No No No Yes Yes YesPower Quality – Harmonics No No No No Yes YesPower Factor No No No 0Yes√ Yes Yes

SYSTEM COMMUNICATIONSIMPACC / PowerNet No No Yes Yes Yes Yes

FIELD TESTINGTesting Method➄ Integral Integral OPTIMizer, BIM, Integral Integral OPTIMizer, BIM,

IMPACC / PowerNet IMPACC / PowerNet

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A Wider Selection of Trip Units ProvideExpanded Protection Capabilities

➀ LS, LSG only.➁ Not to exceed 1200A.

In = Rating plug rating.Ir = LDPU setting.

Is = Sensor rating.BIM = Breaker Interface Module.

monitoring information including power fac-tor, voltage values, harmonic distortion val-ues, and waveform capture.

For additional Digitrip information, con-tact your Cutler-Hammer distributor orsales engineer.

Cutler-Hammer introduced the first micro-processor-based trip unit and has advancedthis technology into a new family of Digitrip®

RMS Electronic and Digitrip OPTIM™

Programmable Trip Units.

Digitrip RMS 510 is the standard trip unit ofDSII and DSLII Breakers. It enables theuser to select as many as nine phase and

ground current protection settings for maxi-mum flexibility in trip-curve shaping andmulti-unit coordination.

For more sophisticated distribution systems,other Digitrip Electronic or ProgrammableTrip Units may be specified to provideIMPACC / PowerNet communications, sys-tems diagnostics information, and systems

Digitrip RMS Electronicand OPTIM ProgrammableTrip Units Selection Guide

Digitrip RMS 510 is standard.

For Voltage/Rating information,refer to Page 2.

LongDelay

ShortDelay

Instan-taneous

GroundFault

➂ By OPTIMizer/BIM.√ Over IMPACC / PowerNet only.

➄ Set by adjustable rating plug.

Low Voltage AC Power Circuit Breakers

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IMPACC / Power Net Communications,Breaker Accessories, and StructuralComponents

On-SiteLocation

Off-SiteLocation

IMPACC / PowerNet Communications:A Highly Reliable System that WillImprove the Operating Efficiencyof Your Plant or Building

As a high frequency-based system,IMPACC / PowerNet is unaffected by theelectromagnetic fields that result when cur-rent flows through conductors. This helpsprovide for increased reliability while sig-nificantly reducing equipment and installa-tion costs.

A master control unit (connected to theDSII or DSLII Breaker with a shielded twist-ed pair communications wire) is used tomonitor, control, and communicate withthe breaker’s Digitrip RMS Trip Unit. Themaster control unit may be a personal

computer, an existing building manage-ment system, a programmable logic con-troller, or a distributed control system.

Through IMPACC / PowerNet, informationcommunicated from a DSII or DSLII Breakerincludes breaker status (open/close/trip),cause and magnitude of trip, meteringvalues, trip rating, and time stamping ofevents. The breaker itself can be remotelyopened or closed.

For additional IMPACC / PowerNet infor-mation, contact your Cutler-Hammer dis-tributor or sales engineer.

A Full Range of Factory InstalledBreaker Accessories

■ Electrical Operator. A universal typeelectric motor, internal to the breaker,that charges the springs automatically.

■ Shunt Trip for Manually OperatedBreakers. Provides remote controlledtripping.

■ Undervoltage Release – Instanta-neous. Trips the breaker instanta-neously when voltage on its coil fallsbetween 30 to 60 percent of normal.

■ Undervoltage Release – Time Delay.Provided with a nonadjustable timedelay that prevents the breaker fromtripping during momentary fluctuationsof system voltage.

■ Auxiliary Switches. Provide thecapability to remotely indicate if thebreaker is open or closed and maybe used on breakers with either man-ually or electrically operated storedenergy mechanisms.

Two types of auxiliary switches areavailable: 2A/2B switches have two

normally open and two normallyclosed contacts. 5A/5B switches havefive normally open and five normallyclosed contacts.

■ Operation Counter. A mechanicalcounter that provides a record of thenumber of breaker operations.

Contact your Cutler-Hammer distributoror sales engineer for a complete listof accessories.

Low Voltage SwitchgearStructural Components

DSII Power Modules

Complete structures including fully equipped breakercompartments. The switchgear manufacturer pro-vides value-added items such as doors, bus, cablearea compartment, instruments, relays, and associ-ated wiring.

The Cutler-Hammer value-added modularapproach for assembling low voltage switch-gear featuring DSII Breakers and struc-tures provides switchgear manufacturers

with opportunities to add the most valueto their low voltage switchgear. For moreinformation refer to PL.44B.04.P.E.

DSII Breaker Cell Parts

Breaker mounting pan, contact mounting plate, andstationary main contacts. In addition to assemblingthese parts, the switchgear manufacturer providesvalue-added items such as doors, bus, cable areacompartment, side sheets, instruments, relays, andassociated wiring. Breaker cell parts are availableindividually or as an entire kit.

DSII Substructure

The basic assembled breaker supporting structureincluding breaker mounting pan, contact mountingplate, stationary main contacts, drawout extensionrails, and side and back sheets. The switchgearmanufacturer provides value-added items such asdoors, bus, cable area compartment, instruments,relays, and associated wiring.

Pittsburgh, Pennsylvania U.S.A.

Publication No. B.22B.01.S.EFebruary 2001Printed in U.S.A. / CMS 2159

Cutler-Hammer, a part of Eaton Corporation, is a worldwide leaderproviding customer-driven solutions. From power distribution and electricalcontrol products to industrial automation, Cutler-Hammer utilizes advancedproduct development, world-class manufacturing, and offers globalengineering services and support.

For more information on Cutler-Hammer products, call 1-800-525-2000 or1-630-377-9738, for engineering services call 1-800-498-2678, or visit ourwebsite at www.cutlerhammer.eaton.com

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