Molded Case Circuit Breakers - Page 25 | Raptor Supplies Australia

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

SQUARE D -

Molded Case Circuit Breakers: JGL Series

Square D PowerPact J Series circuit breakers are used for protecting the circuit from excessive current to prevent fire hazard and equipment damage. These devices allow unit mounting with load- and line-side lugs for easy field installation and maintenance services. They are capable of accommodating aluminium or copper cables with sizes ranging from 350 kcmil to 3/0 AWG and can remain insensitive to mild overloads but provide instantaneous current limiting protection when the wire terminals are exposed to faulty current. These MCCBs feature a handle indicator which provides a visual indication of the three positions (ON, OFF and tripped) of the breaker and can be reset by manually pushing the control lever in the desired position. Choose from a wide range of these IEC protectors available in 3-pole design with a standard voltage rating of 600VAC on Raptor Supplies.

StyleModelAmpsMax. Wire SizeMin. Wire SizePrice (inc. GST)
AJGL36000S25AA----
RFQ
BJGL361501504/0 AWG4 AWGA$ 4688.86
CJGL361751754/0 AWG4 AWGA$ 4688.86
AJGL36175AA175--A$ 5232.10
AJGL36175SO175--A$ 5232.10
AJGL36200SA200---
RFQ
DJGL36200200350 kcmil3/0 AWGA$ 4688.86
EJGL36225225350 kcmil3/0 AWGA$ 4688.86
AJGL36250CU33X250---
RFQ
EJGL36250250350 kcmil3/0 AWGA$ 5457.70
SQUARE D -

Molded Case Circuit Breakers, I-Line Mount

Square D JGA Series circuit breakers designed for providing overcurrent protection and reducing downtime by instantly breaking the electric circuit exposed to short-circuit conditions. These J-frame units feature a thermal-magnetic trip, calibrated at 40 degrees C, providing long-time and instantaneous current limiting functions. They come integrated with I-Line style plug-in mounting facility for ease-of-installation and are suitable for reverse feed applications. The molded case of these breakers hold the current-carrying components, trip devices and other mechanisms within a compact space. They are UL-listed, CSA-certified & IEC-rated and are available with a maximum current rating of 250A on Raptor Supplies.

StyleModelAmpsMax. Wire SizeMin. Wire SizePrice (inc. GST)
AJGA361501504/0 AWG4 AWGA$ 5232.10
AJGA36200200350 kcmil3/0 AWGA$ 5232.10
AJGA36225225350 kcmil3/0 AWGA$ 5232.10
AJGA36250250350 kcmil3/0 AWGA$ 5833.71
BJGA36250U33X250--A$ 8191.11
BJGA36250U31X250--A$ 7559.18
SQUARE D -

Molded Case Circuit Breakers: HGL Series

Square D HGL Series circuit breakers are designed to protect electrical equipment from damages caused by short circuits and overload occurrences. These units come equipped with a thermal-magnetic trip, calibrated at 40 degrees C ( ambient temperature), allowing both instantaneous and long-time current limiting functions. The H-frame design of these breakers offers interrupt capacities of 65kA @ 240 VAC, 35kA @ 480 VAC and 18kA @ 600 VAC. These breakers feature unit mounting (lug-lug) construction for reducing the installation and maintenance downtime and can accommodate aluminium or copper wires with sizes ranging from 14 to 3 AWG. Choose from a wide range of these IEC protectors available in 2 and 3 pole configurations on Raptor Supplies.

StyleModelAmpsFrame SizeNumber Of PolesPhaseVoltageWidthPrice (inc. GST)
AHGL260151560A/HG21-2.7"A$ 1758.98
BHGL360151560A/HG33-4.1"A$ 1758.98
AHGL260252560A/HG21-2.7"A$ 3062.60
AHGL260303060A/HG21-2.7"A$ 1758.98
CHGL360303060A/HG33-4.1"A$ 1758.98
AHGL2603535A-2-600V--
RFQ
AHGL260404060A/HG21-2.7"A$ 1758.98
AHGL2604545A-2-600V-A$ 1937.29
AHGL260505060A/HG21-2.7"A$ 1758.98
DHGL360505060A/HG33-4.1"A$ 1758.98
EHGL360606060A/HG33-4.1"A$ 1758.98
FHGL36060SA60-3-600--
RFQ
GHGL3607070100A/HG33-4.1"A$ 2326.79
AHGL2607070100A/HG21-2.7"A$ 2223.94
GHGL3608080100A/HG33-4.1"A$ 2326.79
AHGL2608080100A/HG21-2.7"A$ 3466.09
HHGL3609090100A/HG33-4.1"A$ 2326.79
AHGL2609090100A/HG21-2.7"A$ 2223.94
AHGL26100100100A/HG21-2.7"A$ 2223.94
IHGL36110110A-3-600V-A$ 3513.30
EHGL36125125150A/HG33-4.1"A$ 3513.30
JHGL26150150150A/HG21-2.7"A$ 2818.46
EHGL36150150150A/HG33-4.1"A$ 3513.30
FHGL36150U33XSA150-3-600--
RFQ
EATON -

E2 Mining Complete Molded Case Circuit Breakers

StyleModelPrice (inc. GST)
AE2F150TM-
RFQ
BE2FM150UMA$ 11923.72
RFQ
CE2LM3600MNWA$ 33715.58
RFQ
EATON -

Navy And Marine Molded Case Circuit Breakers

StyleModelPrice (inc. GST)
A504C191G36A$ 41508.76
A504C191G20A$ 52350.46
A504C191G26A$ 52350.46
A504C191G24A$ 52350.46
A504C191G37A$ 41508.76
B504C191G21A$ 52350.46
B504C191G19A$ 52350.46
B504C191G18A$ 52350.46
StyleModelAmpsPrice (inc. GST)
AKDC3400V--
RFQ
AKDC3400C--
RFQ
AKDC3225W--
RFQ
AKDC3250VW--
RFQ
AKDC3250VWH09--
RFQ
AKDC3300V--
RFQ
AKDC3250W--
RFQ
AKDC3300CVH09--
RFQ
AKDC3350W--
RFQ
AKDC3300VWH09U17--
RFQ
AKDC3350M01Y01--
RFQ
AKDC3300VW--
RFQ
AKDC3300W--
RFQ
AKDC3150V--
RFQ
AKDC3400A05--
RFQ
AKDC3350VW--
RFQ
AKDC3400FK08P16Z04--
RFQ
AKDC3400A01U49--
RFQ
AKDC3400M01Y04--
RFQ
AKDC3400VH09--
RFQ
AKDC3400VH09U17--
RFQ
AKDC3400VW--
RFQ
AKDC3400W--
RFQ
AKDC3400VWU18--
RFQ
AKDC3200W--
RFQ
EATON -

HJD Series Complete Molded Case Circuit Breakers, J Frame

StyleModelAmpsPrice (inc. GST)
AHJD3200VW--
RFQ
AHJD3225CVH09-A$ 21151.86
RFQ
AHJD3250V-A$ 20084.94
RFQ
AHJD3250VW-A$ 26474.55
RFQ
AHJD3250VH09--
RFQ
AHJD3250S30-A$ 20505.83
RFQ
AHJD3250S10--
RFQ
AHJD3250C-A$ 20084.94
RFQ
BHJD3250CX--
RFQ
AHJD3250A04-A$ 21112.70
RFQ
AHJD3225VWH09-A$ 21083.33
RFQ
AHJD3225VH09--
RFQ
CHJD4125--
RFQ
AHJD3225W--
RFQ
AHJD3250A06-A$ 21112.70
RFQ
AHJD3225A06--
RFQ
AHJD3225XS42-A$ 21523.79
RFQ
AHJD3250CS10--
RFQ
AHJD3250C04S10--
RFQ
AHJD3225C--
RFQ
AHJD3250A02-A$ 21112.70
RFQ
AHJD3225V-A$ 19262.72
RFQ
BHJD3200CVH08-A$ 21190.97
DHJD3250W-A$ 6825.87
CHJD4200X--
RFQ
EATON -

FDE Series Complete Molded Case Circuit Breakers, F Frame

StyleModelPrice (inc. GST)
AFDE308033WU13-
RFQ
AFDE308033WA30U13A$ 7574.76
AFDE308033WA$ 5421.24
AFDE316033WA30U13A$ 8367.48
AFDE316032LA30S03A$ 22773.01
AFDE316033WU13A$ 7743.56
AFDE316033WA$ 6210.99
BFDE316036S05A$ 11802.51
AFDE322533WA$ 6210.99
AFDE322533WA30U13A$ 8367.48
AFDE322533WU13-
RFQ
EATON -

FG Series Complete Molded Case Circuit Breakers, F Frame

StyleModelPrice (inc. GST)
AFG3020A12S03-
RFQ
AFG3125S02A$ 8486.75
BFG3200S02A$ 7975.79
BFG3200WD05Z05A$ 5860.29
CFG3225WD05Z05-
RFQ
CFG3225S18A$ 10086.27
CFG3225WS02A$ 9468.13
AFG3090WA12D05S03Z04A$ 7891.61
AFG3100WA12D05S03Z04A$ 7891.61
AFG3090S18A$ 5903.94
AFG3110WS02A$ 8486.75
AFG3110LS20A$ 7483.34
AFG3125A13S01-
RFQ
AFG3125A05S01-
RFQ
AFG3125C04S01A$ 10335.73
AFG3125B05S01A$ 9270.98
AFG3125S18-
RFQ
BFG3200S17A$ 9234.46
AFG3125WA12D05S03Z05-
RFQ
AFG3125S01A$ 8711.05
AFG3125A12S03-
RFQ
AFG3150A12S03-
RFQ
AFG3150S17-
RFQ
AFG3150B05S01A$ 9270.98
AFG3150S02A$ 8486.75
EATON -

FW Series Complete Molded Case Circuit Breakers, F Frame

StyleModelPrice (inc. GST)
AFW3025VLA$ 5965.75
AFW3080LA$ 6300.25
AFW3020VLA$ 6063.56
AFW3016JVLA$ 5807.63
AFW3020LA$ 6269.12
AFW3025LA$ 5965.75
AFW3032VLA$ 5965.75
AFW3032L-
RFQ
AFW3063JVLA$ 4736.12
AFW3032LM08-
RFQ
AFW3063LA$ 5965.75
AFW3050LA$ 5965.75
AFW3063JL-
RFQ
AFW3040JVLA$ 4736.12
AFW3080JLA$ 7170.27
AFW3063LM08A$ 5686.30
AFW3080JVLA$ 5320.68
BFW4200LA$ 21876.78
BFW4063J0VLA$ 10940.09
BFW4050LA$ 9908.62
BFW4100J0LA$ 11914.97
BFW4080J0VLA$ 12028.05
BFW4100L-
RFQ
BFW4100J0VLA$ 12028.05
BFW4063LA$ 9908.62
EATON -

FWC Series Complete Molded Case Circuit Breakers, F Frame

StyleModelPrice (inc. GST)
AFWC3025JVLA$ 7742.60
AFWC3160JVWA0601S0601-
RFQ
AFWC3080JVLA$ 15398.60
AFWC3063JVLA$ 12463.98
AFWC3125JVWA0601-
RFQ
AFWC3125JVL-
RFQ
AFWC3100LA$ 14410.46
AFWC3125L-
RFQ
AFWC3100JVLA$ 15398.60
AFWC3125JVH01-
RFQ
AFWC3125JVWA0601S0601-
RFQ
AFWC3160JVL-
RFQ
AFWC3160JVWA0601-
RFQ
AFWC3100JVWA0601A$ 19764.00
AFWC3160JVH01-
RFQ
AFWC3200L-
RFQ
BFWC4160J6L-
RFQ
BFWC4080J1LA$ 26401.94
BFWC4125J6L-
RFQ
BFWC4050J1L-
RFQ
AFWC3160L-
RFQ
BFWC4063J1LA$ 26682.52
BFWC4160J0L-
RFQ
BFWC4100J1LA$ 26252.16
AFWC3125JL-
RFQ
EATON -

FWCF Series Complete Molded Case Circuit Breakers, F Frame

StyleModelPrice (inc. GST)
AFWCF3020LA$ 11469.11
AFWCF3100LA$ 13984.53
BFWCF4016LA$ 19414.66
AFWCF3160L-
RFQ
AFWCF3160VWA0601-
RFQ
AFWCF3125VWA0601S0601-
RFQ
AFWCF3125L-
RFQ
AFWCF3125VWA0601-
RFQ
AFWCF3125VL-
RFQ
AFWCF3100VWA0601S0601A$ 19913.74
AFWCF3080VWA0601S0601A$ 19481.18
AFWCF3160VL-
RFQ
AFWCF3080LA$ 13984.53
AFWCF3063VWA0601A$ 15019.33
AFWCF3063VWA0601S0601A$ 16233.74
AFWCF3050VL-
RFQ
AFWCF3080VLA$ 13984.53
AFWCF3016VLA$ 11469.11
AFWCF3100VLA$ 13984.53
AFWCF3050VWA0601A$ 15019.33
AFWCF3063VLA$ 11469.11
AFWCF3040VLA$ 11469.11
AFWCF3063LA$ 11469.11
AFWCF3032VLA$ 11469.11
AFWCF3025VLA$ 11469.11
EATON -

FWF Series Complete Molded Case Circuit Breakers, F Frame

StyleModelPrice (inc. GST)
AFWF1025L-
RFQ
BFWF2063LA$ 4931.06
CFWF3016VD14Z04A$ 5260.12
CFWF3025LA$ 5880.99
CFWF3020VLA$ 5786.15
BFWF2225LA$ 12690.19
CFWF3020L-
RFQ
CFWF3016LA$ 5786.15
CFWF3016D17A$ 5786.15
CFWF3016LM08A$ 5529.91
BFWF2160VLA$ 12690.19
BFWF2050LA$ 4638.11
BFWF2100VLA$ 5470.02
BFWF2100LA$ 5470.02
BFWF2100D23A$ 5470.02
BFWF2050VLA$ 4931.06
CFWF3032L-
RFQ
CFWF3032LM08A$ 5862.61
CFWF3020LM08A$ 5529.91
CFWF3020VD14Z04A$ 5260.12
CFWF3020D17A$ 5786.15
CFWF3016VLA$ 5786.15
BFWF2200LSA$ 12690.19
BFWF2225VLA$ 12690.19
BFWF2200VLA$ 12690.19
EATON -

HFD Series Complete Molded Case Circuit Breakers, F Frame

StyleModelPrice (inc. GST)
AHFD3070LA02A$ 4503.57
AHFD3150LBP10-
RFQ
AHFD3150A01S21A$ 9699.21
AHFD3150C06-
RFQ
AHFD3150BP10A$ 7994.81
AHFD3150LM04A$ 7858.89
BHFD3150LA09A$ 9501.58
CHFD3150LA10A$ 9276.64
AHFD3150S05A$ 9481.09
AHFD3125VSH09A$ 9031.22
AHFD3150LA04A$ 8472.33
DHFD4060L-
RFQ
AHFD3150S02A$ 9474.27
DHFD4020D01-
RFQ
AHFD3150LS18A$ 9228.90
DHFD4030D01A$ 5012.51
AHFD3150A04A$ 8724.51
AHFD3150A02-
RFQ
DHFD4050LA05A$ 5850.88
AHFD3125VLA$ 11897.97
AHFD3100LA05-
RFQ
AHFD3100S02A$ 5031.58
AHFD3100VL-
RFQ
AHFD3100S30A$ 12025.52
AHFD3100VWA02H09U70A$ 5721.40
EATON -

HFWF Series Complete Molded Case Circuit Breakers, F Frame

StyleModelPrice (inc. GST)
AHFWF3080VA$ 10334.50
AHFWF3032LA$ 7692.67
AHFWF3040LA$ 7692.67
AHFWF3050VLA$ 7692.67
AHFWF3050VA$ 8557.76
AHFWF3063VD14Z04A$ 6993.29
AHFWF3040D17-
RFQ
AHFWF3050D17A$ 7818.76
AHFWF3040VA$ 5868.24
AHFWF3032V-
RFQ
AHFWF3040VD14Z04A$ 6993.29
AHFWF3032VL-
RFQ
AHFWF3032VD14Z04A$ 6993.29
AHFWF3063D17A$ 7692.67
AHFWF3025VA$ 6365.08
AHFWF3025LA$ 7692.67
AHFWF3020LA$ 7692.67
AHFWF3032D17A$ 7692.67
AHFWF3020VLA$ 7692.67
BHFWF2225VLA$ 18117.01
BHFWF2100LA$ 5222.56
AHFWF3016VLA$ 5275.01
AHFWF3020VD14Z04A$ 6993.29
AHFWF3016L-
RFQ
AHFWF3050L-
RFQ
StyleModelPrice (inc. GST)
AGB1015A$ 891.91
AGB1100A$ 1889.88
EATON -

GD Series Complete Molded Case Circuit Breakers, G Frame

StyleModelAic RatingAmpsNumber Of PolesPrice (inc. GST)
AGD3100DA3---A$ 5113.06
BGD3015B3---A$ 4263.92
CGD2050A3---A$ 3185.89
CGD2040C----
RFQ
CGD2035----
RFQ
CGD2040DA3---A$ 3185.89
CGD2045A3---A$ 3296.30
CGD2045---A$ 799.67
CGD2050DV----
RFQ
CGD2050DA3---A$ 3185.89
CGD2045D----
RFQ
BGD3015A6---A$ 4396.37
BGD3015A3----
RFQ
CGD2050D---A$ 1711.01
BGD3015DB3---A$ 4152.47
BGD3015DA3S114---A$ 7305.26
BGD3015DA3---A$ 4348.20
BGD3015CA3---A$ 4348.20
BGD3015A3S7----
RFQ
CGD2040A3---A$ 3296.30
BGD3015DV---A$ 2794.42
DGD3080S3----
RFQ
CGD2020DA3---A$ 3185.89
CGD2025DV---A$ 1586.91
CGD2025DA3---A$ 3185.89
EATON -

GHB Series Complete Molded Case Circuit Breakers

StyleModelPrice (inc. GST)
AGHB1050BP24A$ 546.09
BGHB3025VA$ 2288.08
BGHB3050BP8A$ 2518.03
BGHB3040S4A$ 4853.64
BGHB3045S1-
RFQ
BGHB3045BP8A$ 2518.03
BGHB3040BP8A$ 2518.03
BGHB3040S2-
RFQ
BGHB3040FA$ 5004.76
BGHB3035S1A$ 5402.56
BGHB3035BP8A$ 2518.03
BGHB3030S2A$ 5402.56
BGHB3030VA$ 2515.28
BGHB3040VA$ 2288.08
BGHB3030BP8A$ 2518.03
BGHB3025S2-
RFQ
BGHB3025S4A$ 5402.56
BGHB3025BP8A$ 2518.03
BGHB3025A3S1A$ 6975.21
BGHB3020VA$ 2288.08
BGHB3025B3A$ 3826.79
BGHB3025S1A$ 2545.18
BGHB3020A3A$ 3826.79
BGHB3020S4A$ 5402.56
BGHB3050S2A$ 5402.56
EATON -

GHC Series Complete Molded Case Circuit Breakers, G Frame

StyleModelAic RatingAmpsNumber Of PolesVoltagePrice (inc. GST)
AGHCGFEP1050----A$ 2841.97
BGHC3030DA3----A$ 3880.89
BGHC3045S1-----
RFQ
BGHC3045A3-----
RFQ
BGHC3040S1-----
RFQ
BGHC3050A3S1----A$ 5330.76
BGHC3040DS1-----
RFQ
BGHC3040A3S4-----
RFQ
BGHC3040A3-----
RFQ
BGHC3030DS1-----
RFQ
BGHC3035S1----A$ 4263.65
BGHC3035DA3----A$ 4078.23
BGHC3030S1----A$ 5357.74
BGHC3030A3-----
RFQ
BGHC3045----A$ 1143.08
BGHC3030B3----A$ 3740.69
BGHC3025A3----A$ 4375.91
BGHC3020DS1----A$ 5271.80
BGHC3020S1----A$ 2545.18
BGHC3020B3----A$ 3637.63
BGHC3015A3----A$ 3740.69
BGHC3015B13----A$ 5051.48
BGHC3020A3-----
RFQ
BGHC3020A3S4----A$ 6190.55
CGHC2080DVB3----A$ 2787.61
EATON -

GWF Series Complete Molded Case Circuit Breakers

StyleModelPrice (inc. GST)
AGWF1020A$ 859.53
BGWF3035V-
RFQ
BGWF3032VA$ 2235.93
BGWF3063A$ 2213.22
BGWF3020A$ 2352.38
BGWF3032A$ 2234.76
BGWF3030A$ 2352.38
CGWF3025A$ 2352.38
RFQ
BGWF3020VA$ 2362.37
BGWF3045A$ 2352.38
BGWF3015A$ 2352.38
DGWF2080A$ 2482.16
BGWF3015VA$ 2235.93
BGWF3016A$ 2352.38
DGWF2090VA$ 2295.77
DGWF2100A$ 2522.87
BGWF3040-
RFQ
BGWF3035A$ 2390.96
DGWF2100VA$ 2362.37
BGWF3080A$ 2729.30
BGWF3125V-
RFQ
BGWF3060A$ 2352.38
BGWF3100VA$ 2758.30
BGWF3070VA$ 2758.30
BGWF3090A$ 3045.43
EATON -

HGH Series Complete Molded Case Circuit Breakers, G Frame

StyleModelPrice (inc. GST)
AHGHB1015A$ 346.46
BHGHC1020BP24A$ 654.82
BHGHC1015BP24A$ 654.82
AHGHB1015BP24A$ 705.58
BHGHC1025BP24A$ 654.82
AHGHB1025A$ 779.68
AHGHB1020A$ 346.46
BHGHC1020A$ 658.24
BHGHC1015A$ 470.71
AHGHB1030BP24A$ 779.30
BHGHC1030BP24A$ 654.82
CHGHB1030A$ 779.68
RFQ
AHGHB1020BP24A$ 779.30
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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.