Molded-Case Circuit Breakers - Eaton
Molded-Case Circuit BreakersMolded-Case Circuit Breakers Family3Molded-Case Circuit BreakersProduct Description, History, Major Product Introduction . . . . . . . . . . . . V12-T3-2General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-3Nameplate Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-3Identifying Factory Original Circuit Breakers . . . . . . . . . . . . . . . . .V12-T3-4Replacement and Upgrade Options . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-5Replacement GuidesMiniature Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-6Molded-Case Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-10Replacement DevicesCircuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-15Molded-Case Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-61Motor Circuit Protectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-63Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-63Panelboard Replacement Breakers. . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-80Replacement Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-81Motor Control Center Replacement Breakers . . . . . . . . . . . . . . . .V12-T3-88Technology Upgrades for Circuit Breakers. . . . . . . . . . . . . . . . . . . . . .V12-T3-91Handle Mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-95Replacement and Service Capabilities . . . . . . . . . . . . . . . . . . . . . . . .V12-T3-112Cross-ReferenceWestinghouse, Challenger and Bryant Replacements . . . . . . . . . . V12-T3-113Breaker Replacements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V12-T3-115Mining Breaker Replacements . . . . . . . . . . . . . . . . . . . . . . . . . . . . V12-T3-162Pricing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V12-T3-168Definite Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V12-T3-169Metering and Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V12-T3-175Specialty BreakersClassic Mining Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Add-On Ground Fault Protection—Type GFR . . . . . . . . . . . . . . . . 202122232425Volume 12—Aftermarket, Renewal Parts and Life Extension Solutions CA08100014E—February 2019 www.eaton.comV12-T3-1
Revision notesVolume 12—Aftermarket, Renewal Parts and Life Extension Solutions, CA08100014ETab 3—Molded-Case Circuit BreakersRevision dateSectionChange page(s)02/27/201902/27/2019——V12-T3-1Update TOC listingV12-T3-169– V12-T3-174 Insert products from Volume 4, Tab 2Description
31Molded-Case Circuit BreakersMolded-CaseCircuit Breakers23456789101112131415161718Molded-Case Circuit Breaker FamilyProduct DescriptionProduct HistoryOriginally aWestinghouse ProductThe need for molded-casecircuit breakers came aboutin 1918 when numerousapplications for electricalmotors resulted in a demandfor a device that wouldensure safe operation and,at the same time, protectelectrical circuits.attempted to find a solutionto the problem. Meetingswith switch manufacturerswere initiated in an effortto find a solution. Switchmanufacturers were asked todevelop a switching devicethat would interrupt a circuitunder prolonged overloadconditions. The device wouldhave to be safe, reliable andtamperproof. It should alsobe resettable so as to bereusable after an interruptionwithout replacing any parts.This search for better circuitprotection resulted in manydifferent but unacceptableapproaches to the problem.These early meetings andsubsequent efforts preparedthe groundwork for theeventual development of themolded-case circuit breaker.Eaton’s molded-case circuitbreakers are designed toprovide circuit protectionfor low voltage distributionsystems. They are describedby NEMA as “. . . a devicefor closing and interruptinga circuit between separablecontacts under both normaland abnormal conditions,”and furthermore as “. . . abreaker assembled as anintegral unit in supportingan enclosed housing ofinsulating material.” TheNEC describes them as“. . . a device designed toopen and close a circuit bynon-automatic means, and toopen the circuit automaticallyon a predetermined overloadof current, without injury toitself when properly appliedwithin its rating.”During this period, individualmotors were used for thefirst time in industrial plantsto operate machine tools andin private homes to operateappliances. Plant electricianswere constantly changingfuses blown during motorstartups because of the lackof properly designed fuses formotor circuit protection.Homes experienced similarproblems when electricalcircuits were overloaded.Inspectors were concernedabout fire hazards because ofplug fuses being bridged withpennies and the installationof fuses with too high anampere rating.Circuit breakers protectagainst overloads inconductors and protectsagainst short circuits inconnected apparatus such asmotors and motor starters.Time Line—Major Product IntroductionsCircuit breakers are designedfor use in panelboards,switchboards, motor controlcenters, control panels,combination starters,individual enclosures andbus duct plug-in units.Inspection authoritiesbecame involved andAfter intensive research anddevelopment, Westinghouseproduced the DE-ION arcextinguisher for use in largeoil circuit breakers. Althoughtoo large in its initial form tobe practical for small circuitbreakers, the arc extinguisherwas eventually modifiedinto a usable size. The firstcompact, workable circuitbreaker was developed inYearProduct1923First compact, workable circuit breaker developed by Westinghouse1927Westinghouse introduced the first complete circuit breaker line,rated 10– 600A, 600V1939Along with ordering information and style numbers, the variousmaximum current ratings came to be known by frame designations:50A100A100A225A600AMotor Circuit Protector (MCP) introduced—first sensitive, lowlevel protection designed specifically for motor circuits1973SELTRONIC introduced—first molded-case circuit breakerwith an electronic trip unit1979Current Limit-R circuit breaker introduced— first true currentlimiting trip unit1982Series C Family introduced—new world-class standard, meetingincreasing interrupting requirements without sacrificing compact size211994Westinghouse Distribution and Control Business Unit (DCBU)acquired by Eaton, integrated with Cutler-Hammer(the Cutler-Hammer line of molded case circuit breakers wassold when merged with Westinghouse)221995OPTIM Family introduced—first truly programmablemolded-case circuit breaker2002Next Generation E125, J2502004Series G First Global Breaker Line2023Since that initial introductionin 1927, Westinghousecontinued to be at the forefrontof circuit breaker technologywith an unprecedented seriesof circuit protectiveenhancements andintroductions as chronicledbelow. In 1994, Eaton, anotherworld-class technology leader,acquired the WestinghouseDistribution and ControlBusiness Unit (DCBU)and integrated it with theirCutler-Hammer businessunit forming a powerful, newcombination, poised to meetthe challenges of the next100 years.1950 1960 1970 1980 19901995E-FrameF-Frame (non-interchangeable trip)G-FrameK-FrameL-Frame1970191920 1930 19401923 when the modified arcextinguisher was coupledwith a thermal trippingmechanism. It was not untilfour years later, however,that Westinghouse researchengineers found the idealcombination of materials anddesign that permitted circuitbreakers to interrupt faultcurrents of 5000A at 120 Vacor Vdc. One year later,Westinghouse placed thefirst circuit breaker on themarket. Its acceptancewas instantaneous.2425V12-T3-2Volume 12—Aftermarket, Renewal Parts and Life Extension Solutions CA08100014E—February 2019 www.eaton.com20002002 Present
3Molded-Case Circuit BreakersBreaker IdentificationAccessoriesNameplate DataA circuit breaker is identified bydata found on the nameplate.Most circuit breakeraccessories are mountedinternally and are not visiblewith a quick inspection.However, because manyaccessories rely on or supplyan external signal, there maybe electrical leads exiting thecircuit breaker case. Inspectfor these leads whenobtaining full descriptiveinformation for circuit breakerreplacement. Examples ofcommon accessories:This includes: Catalog numberShop order numberStyle numberAmperageNumber of polesVoltage classTemperature ratingIn most instances, thecatalog number, style numberor shop order number willsupply enough informationto identify the circuit breaker.However, it is alwaysadvisable to obtain alldata from the nameplateto facilitate identification.A Catalog Number beginswith a series of lettersfollowed by numbersthat identify: Circuit breaker typeNumber of polesMaximum amperageExample: Catalog numberF3020 indicates a Type Fcircuit breaker, three poles,20AA Shop Order Numberbegins with one or twonumbers followed by asingle letter and fouradditional numbers.A shop order number islisted in place of a catalognumber and indicates that thecircuit breaker was modifiedat the factory, i.e., additionof a shunt trip, specialcalibration, etc. Every shoporder number must beresearched with thefactory to properly identifymodifications. Call yourCutler-Hammer Field Salesoffice for this information. Shunt TripUsed to remotely trip thecircuit breaker using anelectrical signal. Typicallytwo wires extend throughthe case.123456Pre-Series C Breaker with Original Label (Labels updated in 1997)89Undervoltage Release (UVR)Trips the circuit breakerwhen voltage drops belowa specified percentage ofcoil voltage (typically 70%).Typically two wires extendthrough the case.Auxiliary SwitchProvides remote indicationof the circuit breaker status(open/closed). Typicallythree wires extend throughthe case in a single-pole1A/1B application.7101112Series C Breaker with Original Label (Labels updated in 1997)1314Alarm Lockout SwitchFor remote indication ofan automatic trip operation.Typically two or three wiresextend through the case.151617Vintage Label for Typical SELTRONIC Molded-Case Circuit Breaker192021Example: 70E212122Note: Eaton does notrecommend replacing a circuitbreaker identified by a ShopOrder Number with a standard“off-the-shelf” circuit breakerwithout first identifying themodifications. They maybe critical to safe andreliable operation.Volume 12—Aftermarket, Renewal Parts and Life Extension Solutions CA08100014E—February 2019 www.eaton.com18232425V12-T3-3
312345Factory OriginalCircuit BreakersWhy Insist on Only Genuine,New MCCBs Purchased ThroughAuthorized Distributors?Eaton defines “New” productas that which has not yet beeninstalled in an electrical circuit,purchased through authorizedchannels in factory originalcondition and packaged inunopened Eaton cartons. 6789101112 1314151617181920Molded-Case Circuit Breakers The only way to ensuresafe and reliable operationof your system is to usegenuine, new, Eaton’sCutler-Hammer productsexclusively. Eaton does notresell the component partsfor molded-case circuitbreakers, the only wayfor third-party breakerrefurbishers to get partsfor the breakers thatthey are rebuilding isto cannibalize otherused breakers or to usecounterfeit components.Neither is a very goodoption for the end userIn some cases,unauthorized resellersof molded-case circuitbreakers have been foundto misrepresent used,rebuilt or surplus products.Only products purchased as“new” through authorizedchannels are covered underthe Eaton warranty policyThere have beeninstances where third-partyrefurbishers have rebuiltbreakers using the wrongparts, with parts missingor the factory lubricationremoved in the cleaningprocess—any of which mayresult in devices that maynot be depended upon tofunction properly to protectequipment and personnelIdentifying Genuine, FactoryOriginal Westinghouse CircuitBreakers Manufactured by EatonThe features on a molded-casecircuit breaker that identify itas genuine or counterfeitmay or may not be readilyapparent. In fact, there may bedifferences not detectable byan external investigation.A genuine Eaton brandmolded-case circuit breakermanufactured by Eaton willhave a serialized bar codeunique to the breaker as wellas an unbroken seal wherethe case comes together.This barcode and seal wereplaced at the factory andensures the internal integrityof the breaker. If, for anyreason the barcode ismissing or the seal isbroken, do not accept thebreaker. (Seal does notappear on interchangeabletrip breakers.)Another way to tell if abreaker has been tamperedwith is to examine the sealantused to cover the screws onthe top rear of the breaker. Ifthe sealant appears sloppy oris missing, it indicates that theunit may have been subjectedto tampering.If front cover screw showsmarks from use, someonehas attempted to open thebreaker. The front coversare either black or gray ongenuine Westinghousemolded-case circuit breakers.Front Cover ScrewsSealant Used to Cover ScrewsA UL label on a genuineWestinghouse breaker iseither exactly as shown inthe photo or is stamped inwhite ink onto the frame inolder pre-Series C breakers.Anything other than this mayindicate fraud.Westinghouse moldedcase circuit breakersmanufactured by Eatonare packed individually andshipped in Eaton labeledcartons. Anything other thanthis is not to be considerednew and should be suspect.Unbroken SealThere is a manufacturing datecode on the back of genuinemolded-case circuit breakersstamped in silver and white. Ifthis coding is missing, it maymean the breaker has beensubjected to tampering.Frequently, this date code iswiped off in an attempt torepresent the breaker as new.XX-XXX-XXXXProduct NameProduct SeriesUL LabelAdpiscingelit seddiamnoneuismodxxxxxxxxxEaton Labeled Cartons2324Manufacturing Date CodeVolume 12—Aftermarket, Renewal Parts and Life Extension Solutions CA08100014E—February 2019 www.eaton.comAmet ElitLorem Ipsum: dolor sitamet, consectetuer adipiscing elit, sed diamnonummy nibh euismodAwww.eaton.com22V12-T3-4Dolor SitMade in U.S.A.2125DOLOR SIT AMETCONSECT ETUER ADILorem ipsum: dolor sit amet,consectetuter adipleiscing,sed diam nonummy, nibheuismod tincidunt.
3Molded-Case Circuit BreakersReplacement CapabilitiesSeries C and Series G MoldedCase Circuit BreakersWhen and Where to Use Generally a first choicewherever physically andelectrically practical Where communications,arc flash protection,energy and power qualitymonitoring are desired As a direct replacementor add-on to alreadyinstalled Series C orSeries G product, includingWestinghouse breakers(see Page V12-T3-114) For special applicationssuch as DC enginegeneratorAdvantages The most currentmolded-case circuitbreaker technology Higher interruptingcapacities in eachframe size Smaller and lighter fora given frame size thanother options Generally less expensivethan other replacementbreaker options Readily availablethroughout range, highlevels of stock Available from stock One-year warrantyCurrent Production ReplacementCircuit BreakersWhen and Where to Use As a direct, one-for-onereplacement of currentproduction pre-Series Cproduct Where you know thecatalog/style numberbut not the physical orelectrical specifics aboutthe applicationAdvantages Ease of selection andcertainty of replacement Guaranteed to be both aphysical and electricalduplicate of original Still in production Newly manufactured UL listed Available from stock One-year warrantyReplacement of CurrentPanelboard Molded-CaseCircuit BreakersWhen and Where to Use When replacing Series Ccircuit breakers in a currentdesign panelboardAdvantages Newly manufacturedand tested to the latesttechnology UL Listed Available from stock inmost frame sizes One-year warranty. Referto Page V12-T3-91 forSeries C connector kitsReplacement of Out-ofProduction PanelboardMolded-Case Circuit Breakers(Including Westinghouse)When and Where to Use When replacing out-ofproduction circuit breakersin an existing panelboard When replacingWestinghouse breakers.Refer to Pages V12-T3-81–V12-T3-90 andPage V12-T3-114Advantages Newly manufacturedand tested to the latestapplicable standards Both physically andelectrically interchangeablewith the circuit breakersthat they are designedto replace UL Listed Available from stock inmost frame sizes One-year warrantyReplacement of Out-ofProduction Motor Control CenterMolded-Case Circuit Breakersand UpgradesWhen and Where to Use When replacing out-ofproduction circuit breakersin an existing motor controlcenter: 5 Star, Type W andF10 designs When upgradingWestinghouse breakerswith a Series C technologyupgrade breakerAdvantages Newly manufacturedand tested to the latesttechnology Series C retrofit kits arephysically and electricallyinterchangeable with thecircuit breakers that theyare designed to replace UL Listed Available from stock inmost frame sizes One-year warranty.Refer to Page V12-T3-91Service for Molded-CaseCircuit BreakersWhen and Where to Use Where circuit breaker hassustained minor physicaldamage to a handle, lug,etc., that otherwise wouldbe fully functional Large frame circuit breaker(600A and above) that hasexperienced some normalwear, but is in generallygood condition, as aneconomically drivenalternative to new When replacingWestinghouse breakers.Refer to Page V12-T3-1141AdvantagesPrevents loss of circuitbreakers due to minordamage Reduces overallbreaker costs Prevents use of potentiallyunreliable third-partyrefurbishers Includes full one-yearEaton Electrical Inc.warranty Ensures reliability throughdealing with the originalmanufacturer with a longand well-recognizedtradition of product safety,integrity and quality Provides a simple andconvenient solution8 Contact Eaton’sBreaker Service 02122Contact: 1-800-OLD-UNIT.232425Volume 12—Aftermarket, Renewal Parts and Life Extension Solutions CA08100014E—February 2019 www.eaton.comV12-T3-5
31234Molded-Case Circuit BreakersQUICKLAG and Eaton Miniature Circuit Breaker Replacement GuideQUICKLAG and Eaton Plug-In Industrial Circuit Breakers—Dimensions in InchesMaximum dth: 1.00Height: 2.94Depth: 2.38Width: 1.00Height: 2.94Depth: 2.38Width: 1.00Height: 2.94Depth: 2.38Width: 1.00Height: 2.94Depth: 2.38No previous circuitbreaker existedQHPLQHPCurrent DesignThese circuit breakers replace the out-of-productioncircuit breakers listed below.567Out-of-Production Westinghouse Circuit Breakers8These circuit breakers are no longermanufactured. Recommended QUICKLAG circuitbreakers listed above.9QUICKLAG Bolt-On Industrial Circuit Breakers—Dimensions in Inches1011HQNPL, HQNPAL, HQNP,QPHHQNPA, QP, QPA, QPAH, QNPL,QNPAL, QNP, Type P, PLMaximum dth: 1.00Height: 2.94Depth: 2.38Width: 1.00Height: 2.94Depth: 2.38Width: 1.00Height: 2.94Depth: 2.38Width: 1.00Height: 2.94Depth: 2.38QBHNo previous circuitbreaker existedHBACurrent DesignThese circuit breakers replace the out-of-productioncircuit breakers listed below.1213141516Out-of-Production Westinghouse Circuit BreakersThese circuit breakers are no longermanufactured. Recommended QUICKLAG circuitbreakers listed above.HQNB, HQNBA, QB, BA,QNBL, QNBAL17QUICKLAG and Eaton Cable-In/Cable-Out Industrial Circuit Breakers—Dimensions in Inches18Description1920Maximum idth: 1.00Height: 3.75Depth: 2.44Width: 1.00Height: 3.75Depth: 2.44Width: 1.00Height: 3.75Depth: 2.44Width: 1.00Height: 3.75Depth: 2.44Width: 0.70Height: 4.10Depth: 2.60HQCL, HQCAL, HQC,HQCA, QCAQCHNo previous circuitbreaker existedQHCL, QHCWMTCurrent DesignThese circuit breakers replace theout-of-production circuit breakerslisted belo
Most circuit breaker accessories are mounted internally and are not visible with a quick inspection. However, because many accessories rely on or supply an external signal, there may be electrical leads exiting the circuit breaker case. Inspect for these leads when obtaining full descriptive information for circuit breaker replacement. Examples of
molded-case circuit breakers (MCCB), insulated-case circuit breakers (ICCB) and low voltage power circuit breakers LVPCB). Insulated-case circuit breakers are designed to meet the standards for molded-case circuit breakers. Low voltage power circuit breakers comply with the following standards: ANSI Std. C37.16—Preferred Ratings
Molded Case Circuit Breakers M1-M4 Product Overview Features Series M Molded Case Circuit Breakers, 15 - 600A NOARK Electric offers a complete range of Molded Case Circuit Breakers in four frame sizes: 100AF, 225AF, 400AF and 600AF. Each frame offers a choice of interrupting ratings at voltages ranging from 240VAC to 690VAC and 250VDC to 600VDC.
FORMULA Molded case circuit breakers 1 FORMULA Molded case circuit breakers Introduction ABB's FORMULA molded case circuit breaker line offers simplicity and quality in some of the smallest dimensions available. The A1 breaker frame size ranges in amperes from 15 through 100 and the A2 breaker frame size ranges from 125 through 250 amperes .
Siemens Industry, Inc. SPEEDFAX 2017 Product Catalog 7-3 7 MOLDED CASE CIRCUIT BREAKERS Siemens / Speedfax Previous folio: 6-2 What’s new in molded case circuit breakers: The development of VL Circuit Breaker enclosures for the150A and 250A breakers demonstrates a significant
Air Circuit Breakers Fixed Version for Power Distribution Emax 2 Icu 100kA - 200kA 4.14 . Air Circuit Breakers Accessories 4.16. 4 1SWC 010 000 C 0314 7 Circuit Breakers: 2 ABB SA LV Products Prices exclude VAT, subject to change without notice E & O.E. Terms & Conditions Apply Moulded Case Circuit Breakers
II - UL FORMULA Molded Case Circuit Breakers FORMULA. Simplicity and Quality in a Single Product. FORMULA is the cumulation of ABB SACE's long history of developing effective circuit breakers. It was developed to be simple, but amazes with its extreme quality and versatility. The highlights of the new line of molded case circuit breakers include:
Eaton Char-Lynn 4000 Series 10 Eaton Char-Lynn 6000 Series 11 Eaton Char-Lynn 10,000 Series 12 Eaton Char-Lynn Spares 13 Eaton Xcel XLH Series 15 Eaton Xcel XLS Series 16 Eaton Xcel XL2 Series 17 Eaton Xcel Spares 18 Eaton Char-
Section 1—General Information, provides an overview of electronic trip molded case circuit breakers. Section 2—MICROLOGIC Trip Systems Based On LE, LX, LXI, ME, MX, NE, NX, PE and PX Circuit Breakers, provides information about the electronic trip systems used in LE, LX, LXI, ME, MX, NE, NX, PE and PX circuit breakers only.
