Molded Case Circuit Breakers

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Molded case circuit breakers protect various electrical circuits and equipment from overcurrents and short circuits. These breakers consist of a molded case housing that encloses the circuit... Read More

GENERAL ELECTRIC -

Molded Case Circuit Breakers, Spectra Series

Molded case circuit breakers from General Electric are electrically operated switches used to protect circuits from overcurrent, typically resulting from a short circuit or overload. They feature microEntelliGuard trip unit, which is a digital, solid state, RMS sensing trip system and offers flexible system protection, metring and communication options. These compact circuit breakers meet or exceed UL, CSA & CE standards and are equipped with interchangeable plugs to easily change the LT rating. They have a reduced energy let-through feature for enhanced protection. Spectra Series circuit breakers are available in current ratings ranging from 7A to 250A on Raptor Supplies.

StyleModelAc Voltage RatingAir @ 480vacAmpsDc Voltage RatingMax. Wire SizeMin. Wire SizeNumber Of PolesPhasePrice (inc. GST)
ATED113050WL277 VAC10kA50125 VDC3 AWG (Cu), 1 AWG (Al)3 AWG (Cu), 1 AWG (Al)11A$ 860.48
ATED113025WL277 VAC10kA25125 VDC8 AWG14 AWG11A$ 933.11
ATED113090WL277 VAC10kA90125 VDC2/0 AWG6 AWG (Cu), 4 AWG (Al)11A$ 1148.32
ATED113080WL277 VAC10kA80125 VDC2/0 AWG6 AWG (Cu), 4 AWG (Al)11A$ 1148.32
ATED113070WL277 VAC10kA70125 VDC2/0 AWG6 AWG (Cu), 4 AWG (Al)11A$ 1148.32
ATED113060WL277 VAC10kA60125 VDC3 AWG (Cu), 1 AWG (Al)3 AWG (Cu), 1 AWG (Al)11A$ 860.48
ATED113045WL277 VAC10kA45125 VDC3 AWG (Cu), 1 AWG (Al)3 AWG (Cu), 1 AWG (Al)11A$ 883.29
ATED113040WL277 VAC10kA40125 VDC3 AWG (Cu), 1 AWG (Al)3 AWG (Cu), 1 AWG (Al)11A$ 860.48
ATED113035WL277 VAC10kA35125 VDC3 AWG (Cu), 1 AWG (Al)14 AWG (Cu), 12 AWG (Al)11A$ 933.11
ATED113030WL277 VAC10kA30125 VDC8 AWG14 AWG11A$ 860.48
ATED113020WL277 VAC10kA20125 VDC8 AWG14 AWG11A$ 863.98
ATED113015WL277 VAC10kA15125 VDC8 AWG14 AWG11A$ 861.62
ATED113100WL277 VAC10kA100125 VDC3/0 AWG3 AWG (Cu), 1 AWG (Al)11A$ 1148.32
BTED124080WL480 VAC18kA80250 VDC2/0 AWG6 AWG (Cu), 4 AWG (Al)21A$ 2432.05
BTED124100WL480 VAC18kA100250 VDC3 AWG (Cu), 1 AWG (Al)14 AWG (Cu), 12 AWG (Al)21A$ 2242.69
BTED124110WL480 VAC18kA110250 VDC3 AWG (Cu), 1 AWG (Al)14 AWG (Cu), 12 AWG (Al)21A$ 5986.33
BTED124125WL480 VAC18kA125250 VDC3 AWG (Cu), 1 AWG (Al)14 AWG (Cu), 12 AWG (Al)21A$ 2607.79
BTED124150WL480 VAC18kA150250 VDC3 AWG (Cu), 1 AWG (Al)14 AWG (Cu), 12 AWG (Al)21A$ 6451.20
BTED124090WL480 VAC18kA90250 VDC--2-A$ 2432.05
CTED136020WL600 VAC18kA20500 VDC8 AWG14 AWG33A$ 1230.47
CTED136025WL600 VAC18kA25500 VDC8 AWG14 AWG33A$ 1325.00
CTED136030WL600 VAC18kA30500 VDC8 AWG14 AWG33A$ 1325.00
CTED136035WL600 VAC18kA35500 VDC3 AWG (Cu), 1 AWG (Al)14 AWG (Cu), 12 AWG (Al)33A$ 1325.00
CTED136045WL600 VAC18kA45500 VDC3 AWG (Cu), 1 AWG (Al)14 AWG (Cu), 12 AWG (Al)33A$ 1325.00
CTED136050WL600 VAC18kA50500 VDC--3-A$ 1230.47
EATON -

KW Series Complete Molded Case Circuit Breakers, K Frame

StyleModelPrice (inc. GST)
AKW2400XA$ 14128.12
BKW3400A$ 16576.24
CKW4400A$ 26535.06
CKW4315A$ 26535.06
CKW4200A$ 26535.06
CKW4250VA$ 26535.06
CKW4315VA$ 26535.06
BKW3400WS44X38Y02A$ 18646.25
BKW3400WK03P26A$ 22362.45
BKW3400VD14X29A$ 16576.24
CKW4200VA$ 26535.06
BKW3400V2M02X15Y27A$ 19200.44
BKW3400V2M02X31Y07A$ 18776.63
BKW3400V2D14Y39A$ 20520.65
BKW3400VA$ 18303.96
BKW3400KA06Z02A$ 15846.05
BKW3200VD14X30A$ 16576.24
BKW3315VD14X29A$ 16576.24
BKW3400K03P26Z02A$ 19265.63
BKW3315VA$ 18303.96
BKW3315WS44X38Y02A$ 20325.08
BKW3250WS44X38Y02A$ 18646.25
BKW3315A$ 16576.24
BKW3250VD14X30A$ 16576.24
BKW3250D09A$ 16576.24
EATON -

GD Series Complete Molded Case Circuit Breakers, G Frame

StyleModelAic RatingAmpsNumber Of PolesPrice (inc. GST)
AGD3100S1---A$ 6972.77
BGD3045C---A$ 2839.30
CGD3040D---A$ 2839.30
CGD3040DV---A$ 3393.49
CGD3040DA3---A$ 4417.07
CGD3040DS1---A$ 6177.39
CGD3040A3S7---A$ 7445.47
CGD3040DS101---A$ 5825.32
BGD3045A3---A$ 4417.07
CGD3040S1---A$ 6050.25
BGD3045S1---A$ 6050.25
CGD3040C---A$ 2839.30
DGD3050A3---A$ 4465.96
BGD3045D---A$ 2839.30
DGD3050A3G7---A$ 4465.96
EGD3050DV---A$ 2839.30
DGD3050A3S7---A$ 7445.47
EGD3050DA3---A$ 4417.07
EGD3050CA3---A$ 4332.31
EGD3050C---A$ 2839.30
CGD3040A3---A$ 4332.31
FGD3035---A$ 1084.39
EGD3050D---A$ 2839.30
GGD3030D---A$ 2839.30
GGD3030A3---A$ 4465.96
EATON -

GHC Series Complete Molded Case Circuit Breakers, G Frame

StyleModelAic RatingAmpsNumber Of PolesVoltagePrice (inc. GST)
AGHC2045----A$ 730.21
BGHC3090S1----A$ 6819.58
CGHC1015D----A$ 622.62
CGHC1015BP24----A$ 586.78
CGHC1015-----
RFQ
DGHCGFEP1050----A$ 3171.80
BGHC3100S2----A$ 6819.58
DGHCGFEP1060----A$ 3171.80
BGHC3100DA3----A$ 5065.77
BGHC3100S1-----
RFQ
DGHCGFEP1040----A$ 3171.80
BGHC3100S4----A$ 6640.27
BGHC3100A3----A$ 5020.15
CGHC1015HIDBP24----A$ 733.46
BGHC3090A6S1----A$ 8045.28
BGHC3080S1----A$ 6640.27
BGHC3080DS2----A$ 6819.58
BGHC3100A3S1----A$ 8045.28
BGHC3070S1----A$ 6640.27
BGHC3070S7----A$ 6050.25
BGHC3080-----
RFQ
BGHC3070S4----A$ 6265.39
BGHC3070DS1----A$ 6066.54
BGHC3080A3----A$ 5020.15
CGHC1015HID----A$ 733.46
EATON -

QB Series AFCI Circuit Breakers

StyleModelAic RatingAmpsFrame TypeNumber Of PolesVoltagePrice (inc. GST)
AQBHGFT1030-30QBHGFT1120/240VA$ 714.79
BQBCAF1015-----A$ 552.24
AQBHGFT1020-20QBHGFT1120/240V-
RFQ
AQBHGFT1015-15QBHGFT1120/240VA$ 714.79
AQBGFT1025-25QBGFT1120/240VA$ 573.23
CQBAF1020-20BAB1120VA$ 545.07
CQBAF1015-15BAB1120VA$ 512.01
DQBH1015CAF-----A$ 656.71
DQB1020CAF-----A$ 407.92
DQB1015CAF-----A$ 386.04
EQBGFT1020-20AQBGFT10201120VA$ 573.23
FQBGF203010kAIC@120V30ABAB2240V-
RFQ
GQBGF205010kAIC@120V50ABAB2240VA$ 928.63
HQBGF101510kAIC@120V15ABAB1120VA$ 512.01
IQBGFEP205010kAIC@240V50ABAB2240VA$ 870.42
JQBGFEP204010kAIC@240V40ABAB2240VA$ 870.42
KQBGFEP201510kAIC@240V15ABAB2240VA$ 823.28
EATON -

HGH Series Complete Molded Case Circuit Breakers, G Frame

StyleModelPrice (inc. GST)
AHGHC1020BP24A$ 733.46
BHGHB1015BP24A$ 733.46
BHGHB1025A$ 733.46
AHGHC1020A$ 733.46
BHGHB1030BP24A$ 733.46
CHGHB1030A$ 733.46
RFQ
BHGHB1020BP24A$ 733.46
BHGHB1015A$ 329.72
AHGHC1015BP24A$ 733.46
AHGHC1025BP24A$ 733.46
BHGHB1020A$ 329.72
AHGHC1015A$ 733.46
AHGHC1030BP24A$ 733.46
EATON -

HJDB Series Complete Molded Case Circuit Breakers, J Frame

StyleModelPrice (inc. GST)
AHJDB2125A$ 27284.82
AHJDB2200A$ 27284.82
BHJDB3200A$ 29957.88
BHJDB3090A$ 29957.88
BHJDB3100A$ 29957.88
BHJDB3225A$ 29957.88
BHJDB3125A$ 29957.88
BHJDB3250A$ 31212.90
BHJDB3150A$ 29957.88
BHJDB3175A$ 29957.88
AHJDB2100A$ 27284.82
AHJDB2225A$ 27284.82
AHJDB2175A$ 27284.82
AHJDB2250A$ 28295.34
AHJDB3070A$ 29957.88
AHJDB2150A$ 27284.82
EATON -

BR Series AFCI Circuit Breakers

StyleModelAmpsFrame TypeNumber Of PolesVoltagePrice (inc. GST)
ABRL215CAF----A$ 511.38
BBRC115AF----A$ 197.97
CBRL215AF----A$ 532.88
DBRHCAF120----A$ 165.29
DBRHCAF115-----
RFQ
EBRCAF120QN----A$ 160.13
FBRCAF120----A$ 151.08
FBRCAF115CS----A$ 914.88
GBRCAF120CS----A$ 914.88
HBRAF120----A$ 862.68
IBRACAF115----A$ 218.47
JBRAF120C-----
RFQ
KBRAF115CCS----A$ 914.88
LBR120AF----A$ 218.47
MBRL220CAF----A$ 519.68
NBRN115AF15BRN1120VA$ 142.53
OBRP115AF15BR1120VA$ 136.00
OBRP120AF20BR1120/240VA$ 136.00
NBRN120AF20BRN1120/240VA$ 142.53
PBRL220AF20BR2120/240VA$ 545.57
EATON -

JDB Series Complete Molded Case Circuit Breakers, J Frame

StyleModelAmpsPrice (inc. GST)
AJDB3150W-A$ 15666.75
AJDB3200C-A$ 16429.56
AJDB3200WA02-A$ 17912.79
BJDB2200A06-A$ 15256.03
AJDB3200WA06S10-A$ 20993.32
BJDB2225A02S30-A$ 18320.26
AJDB3225D08-A$ 17684.59
BJDB2175-A$ 13586.99
AJDB3200X-A$ 16348.08
BJDB2125-A$ 13586.99
AJDB3200WM01-A$ 16315.48
BJDB2200A02-A$ 15256.03
AJDB3200A14-A$ 19314.52
BJDB2150-A$ 13586.99
AJDB3200S42-A$ 19901.27
BJDB2070W-A$ 13482.66
BJDB2100-A$ 13586.99
AJDB3225B05-A$ 19314.52
AJDB3200VA06-A$ 21107.43
BJDB2070-A$ 13586.99
AJDB3175VA09U49-A$ 22395.05
AJDB3175XA06-A$ 19233.03
AJDB3175W-A$ 15666.75
AJDB3175S29-A$ 21107.43
AJDB3175C-A$ 17684.59
StyleModelPrice (inc. GST)
AJDCB3100A$ 34978.03
AJDCB3175A$ 34978.03
AJDCB3250A$ 42068.15
AJDCB3200A$ 34978.03
AJDCB3125A$ 34978.03
AJDCB3225A$ 34978.03
AJDCB3150A$ 34978.03
EATON -

JWC Series Complete Molded Case Circuit Breakers, J Frame

StyleModelPrice (inc. GST)
AJWC4125A$ 53118.98
AJWC4250A$ 59866.86
BJWC3200A$ 31212.90
BJWC3250A$ 38335.65
EATON -

DK Series Complete Molded Case Circuit Breakers, K Frame

StyleModelAmpsNumber Of PolesPrice (inc. GST)
ADK2400Y--A$ 11588.72
BDK3250V--A$ 14190.07
ADK2400W--A$ 11318.14
BDK3250W--A$ 4966.57
BDK3250H08--A$ 13534.82
BDK3250WS42--A$ 17048.94
BDK3300B06--A$ 15709.13
BDK3250S42--A$ 18010.57
BDK3300C--A$ 14212.88
BDK3250Y--A$ 13961.87
BDK3250C--A$ 14255.26
BDK3300H08--A$ 17048.94
BDK3300WS10--A$ 16739.25
BDK3300V--A$ 13512.01
BDK3300S42--A$ 17423.82
ADK2400KA06X07Y08--A$ 12700.30
BDK3300S10--A$ 17423.82
BDK3300W--A$ 4966.57
BDK3300Y--A$ 13961.87
BDK3300Z15--A$ 14190.07
BDK3350WS42--A$ 17048.94
BDK3350VW--A$ 13528.31
BDK3350W--A$ 4966.57
BDK3400V--A$ 5141.56
BDK3400S10--A$ 17440.12
EATON -

HKDB Series Complete Molded Case Circuit Breakers, K Frame

StyleModelPrice (inc. GST)
AHKDB2125A$ 25296.30
BHKDB3200A$ 28164.96
CHKDB3400A$ 36396.06
CHKDB3300A$ 28164.96
CHKDB3350A$ 28164.96
CHKDB3225A$ 28164.96
CHKDB3250A$ 28164.96
CHKDB3175A$ 28164.96
CHKDB3150A$ 28164.96
CHKDB3125A$ 28164.96
AHKDB2400A$ 25296.30
AHKDB2200A$ 25296.30
AHKDB2400KWA$ 20993.32
CHKDB3100A$ 28164.96
AHKDB2300A$ 25296.30
AHKDB2350A$ 25296.30
DHKDB2100A$ 25296.30
AHKDB2250A$ 25296.30
AHKDB2175A$ 25296.30
AHKDB2150A$ 25296.30
AHKDB2225A$ 25296.30
BHKDB3400KWA$ 25198.52
EATON -

KD Series Complete Molded Case Circuit Breakers, K Frame

StyleModelAmpsPrice (inc. GST)
AKD4350-A$ 26779.53
BKD3400CA06S10-A$ 21009.61
BKD3400CA06-A$ 18092.10
BKD3400A06U18Z02-A$ 20439.16
BKD3400FK09P23Z04-A$ 22574.36
BKD3400FJ01-A$ 14828.99
BKD3400CT26-A$ 20830.34
BKD3400FK02P16M01X36Y-A$ 19933.90
BKD3400J01-A$ 22134.29
BKD3400FK03P27-A$ 19216.74
BKD3400FK09Z04-A$ 22574.36
BKD3400K20J01F01H08-A$ 42769.02
BKD3400C-A$ 17733.51
BKD3400KA02-A$ 17000.05
BKD3400FK09P24Z04-A$ 22574.36
BKD3400KA06X02Y15-A$ 18222.48
BKD3400KA01S29Z04-A$ 19722.00
BKD3400K09P24S42Z01-A$ 24758.45
BKD3400KA06X02Y18-A$ 18222.48
BKD3400KA06U18-A$ 19722.00
BKD3400KA05D15T06Y15-A$ 18564.76
BKD3400KD15T06Y15-A$ 18776.63
BKD3400A13B02-A$ 20325.08
BKD3400A05-A$ 17586.80
BKD3400KD15U18Y15-A$ 18776.63
EATON -

KDB Series Complete Molded Case Circuit Breakers, K Frame

StyleModelAmpsPrice (inc. GST)
AKDB2400W-A$ 13111.05
BKDB3300S10-A$ 19640.51
AKDB2150W-A$ 13111.05
BKDB3350M01-A$ 16576.24
AKDB2150-A$ 13658.69
BKDB3300WA06-A$ 16269.83
AKDB2100W-A$ 13111.05
BKDB3350-A$ 16559.95
BKDB3300V-A$ 16576.24
BKDB3300WA04Z04-A$ 18108.39
BKDB3250WS44X38Y02-A$ 19004.83
BKDB3300A01-A$ 18075.76
AKDB2200W-A$ 13111.05
BKDB3250Z04-A$ 16576.24
BKDB3250A02-A$ 18075.76
BKDB3225W-A$ 15718.91
BKDB3200-A$ 16559.95
BKDB3175-A$ 16559.95
BKDB3125A02-A$ 18075.76
AKDB2400M01S09Y07X06-A$ 15927.54
BKDB3150A02-A$ 18075.76
BKDB3150A06-A$ 18075.76
BKDB3125A06S10-A$ 20748.85
BKDB3350WA06M01S10-A$ 19347.12
BKDB3350W-A$ 15718.91
StyleModelPrice (inc. GST)
AKDCB3125A$ 36396.06
AKDCB3175A$ 36396.06
AKDCB3100A$ 36396.06
AKDCB3225A$ 36396.06
AKDCB3150A$ 36396.06
AKDCB3200A$ 36396.06
AKDCB3250A$ 36396.06
AKDCB3400A$ 36396.06
AKDCB3300A$ 36396.06
AKDCB3350A$ 36396.06
EATON -

HLD Series Complete Molded Case Circuit Breakers, L Frame

StyleModelAmpsPrice (inc. GST)
AHLD3600X-A$ 55759.48
AHLD3600A08U24-A$ 54422.93
AHLD3500A08U20-A$ 54422.93
AHLD3500A09N05-A$ 54422.93
AHLD3450VW-A$ 54902.11
AHLD3500A08T08-A$ 54422.93
AHLD3500A08S12-A$ 54422.93
AHLD3600A06-A$ 62194.39
AHLD3500VW-A$ 54902.11
AHLD3600A08S04-A$ 54422.93
AHLD3500V-A$ 56408.18
AHLD3500W-A$ 54902.11
AHLD3600A06S02-A$ 58393.42
AHLD3600A08T08-A$ 54422.93
AHLD3600A08U20-A$ 62194.39
AHLD3500A08U24-A$ 54422.93
AHLD3600A08S12-A$ 54422.93
AHLD3600CVH09-A$ 54149.11
AHLD3600C-A$ 56238.65
BHLD3600FA11A14K01W06-A$ 75165.24
BHLD3600FK01P02A13U26-A$ 65480.27
AHLD3600A12-A$ 59951.62
BHLD3600FVA13U26-A$ 55707.31
CHLD4600-A$ 83125.75
AHLD3600V-A$ 56408.18
StyleModel
ASPD69160
RFQ
ASPD69160NGT
RFQ
ASPD69160NT
RFQ
EATON -

FDCE Series Electronic Molded Case Circuit Breakers, F Frame

StyleModelPrice (inc. GST)
AFDCE308035A$ 25426.72
AFDCE316036WA$ 31799.68
AFDCE322536ZGWA$ 33282.90
AFDCE322536ZGA$ 33820.79
AFDCE308036A$ 25834.20
AFDCE308036ZGWA$ 27268.52
AFDCE316036A$ 32321.24
BFDCE316036A31B02A$ 35554.99
AFDCE316035LA$ 29648.19
AFDCE316032ZGLA$ 28621.33
AFDCE316035A$ 29159.22
AFDCE316035WA$ 28621.33
AFDCE316036ZGLA$ 34309.76
AFDCE322536A$ 10965.03
AFDCE316036ZGWA$ 33282.90
AFDCE322532ZGA$ 28099.77
AFDCE322532ZGWA$ 27594.51
AFDCE308032ZGWA$ 24725.85
AFDCE308032LA$ 23275.23
AFDCE322532ZGLA$ 28621.33
AFDCE308032ZGLA$ 24774.75
AFDCE322536WA$ 31799.68
AFDCE308033A$ 22851.45
AFDCE322535LA$ 29648.19
AFDCE322536ZGLA$ 34309.76
StyleModelPrice (inc. GST)
AE2LW3320WA$ 35549.18
AE2LW3400WA$ 35549.18
AE2LW3450MNWA$ 35549.18
AE2LW3300WA$ 35549.18
AE2LW3350WA$ 34164.63
AE2LW3450MYWA$ 38991.81
AE2LW3450MVWA$ 35549.18
AE2LW3450MRWA$ 35549.18
AE2LW3450WA$ 35549.18
AE2LW3450MLWA$ 35549.18
AE2LW3450MXWA$ 35549.18
StyleModelPrice (inc. GST)
AE2LEM34002WA06U66A$ 39197.66
AE2LEM3400MWU17A$ 36709.20
AE2LEM3600MWU66A$ 40937.67
AE2LEM3600MWA$ 37457.59
AE2LEM3600MW*A06Z22A$ 42041.61
AE2LEM3600MWA06U66A$ 42209.97
AE2LEM3600MWA05A$ 95589.89
AE2LEM3600M2WU66A$ 40937.67
AE2LEM3600MW*Z22A$ 39758.96
AE2LEM3400MWA06U66A$ 39197.66
AE2LEM36002WA$ 34426.55
AE2LEM3400WU66A$ 37887.98
AE2LEM34002WU66A$ 37887.98
AE2LEM3400MWU65A$ 37887.98
AE2LEM3400M2WU66A$ 32480.73
AE2LEM3400MWU66A$ 32480.73
AE2LEM3400M2WA$ 34426.55
AE2LEM3600WU66A$ 40937.67
12...5354

Molded Case Circuit Breakers

Molded case circuit breakers are designed to prevent the flow of faulty power supplies into sensitive electrical equipment that may cause overloads and short circuits. With current ratings up to 1600A, these units are ideal for isolation applications in large PV systems. Raptor Supplies offers a wide range of these MCCBs from brands like ABB, Square D, Eaton, General Electric and Siemens. Square D circuit breakers come equipped with a thermal-magnetic trip unit which instantly opens under faulty currents and are capable of providing both time-delayed and instantaneous current limiting functions. These units feature an I-line type configuration at the ON end for facilitating bus connections in panelboards and lugs at the OFF end for cable connection. General Electric molded case circuit breakers feature a programmable electronic trip unit which accentuates the toggle when the current exceeds the predetermined value. These breakers come equipped with bolt-on type terminals for easy installation in reverse-feed applications. They are available in 2 and 3 pole options with a maximum voltage rating of 600VAC on Raptor Supplies.

Working Mechanism

Molded case circuit breaker's working mechanism includes following steps:

  • In the normal state, molded case circuit breakers allow electrical current to flow through the circuit uninterrupted.
  • When an overcurrent condition occurs, the MCCB's internal sensors detect the excess current flowing through the circuit.
  • They have two main trip mechanisms: electromagnetic trip and thermal trip.
  • The electromagnetic trip detects sudden, high-current surges, similar to short circuits, and quickly opens the circuit to cut power.
  • The thermal trip reacts to prolonged overloads by heating up, causing the MCCB to trip and disconnect the circuit.
  • Once the trip mechanism is activated, it triggers a mechanical release within the circuit breaker.
  • Hence, the breaker's contacts move quickly to the open position.
  • When the contacts are open, the MCCB interrupts the electrical flow, effectively cutting off power to the circuit.
  • The circuit remains in this disconnected state until manually reset by the user.

Features

General Electric Bolt-On Circuit Breakers:

  • These General Electric TEYH Series MCCBs have a thermal-magnetic, non-interchangeable trip unit to protect from severe power surges while avoiding tripping on mild overloads.
  • They also have a bolt-on mounting facility for convenience and compatibility with lug-lug / unit-mount applications.
  • These UL-listed breakers are available in single, two and three-pole configurations and accommodate universal 10 to 4 AWG size wires.

Square D PowerPacT Circuit Breakers :

  • These Square D MCCBs have a new front-facing and semi-transparent cover for easy access to accessories.
  • They have current ratings ranging from 15 to 125A and offer a maximum breaking capacity of 65kA at 480VAC.
  • These RoHS and REACH-compliant breakers feature dual-break rotating contacts that reduce peak current during a short circuit fault.

Eaton HKD Series Circuit Breakers :

  • Eaton HKD Series circuit breakers protect against overload and short circuit conditions in 480Y / 277V (three-phase, four-wire) distribution panels.
  • They have 2-pole construction and can serve two separate circuits or a complete single circuit when short-circuited.

Frequently Asked Questions

How does a molded case circuit breaker differ from a circuit breaker?

While both molded case circuit breakers and conventional circuit breakers serve the same primary purpose of protecting electrical circuits, MCCBs are a specific type of circuit breaker with a molded case for added durability and protection.

Can MCCBs be reset after tripping?

Once the fault or overload is resolved, you can reset the MCCB to restore power to the circuit.

What is the difference between an MCCB and a miniature circuit breaker (MCB)?

Molded case circuit breakers are designed for higher current ratings and are used in industrial settings with heavy machinery, while MCBs are smaller and designed for residential or light commercial applications with lower current ratings.

Can MCCBs be used in three-phase electrical systems?

Yes, MCCBs are commonly used in three-phase systems. Brands like WEG, Siemens and ABB come in various configurations to suit single-phase or three-phase applications.