Molded Case Breakers

7536 products

Shop our wide selection molded case (MCCB) circuit breakers.

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EJB14015 - Square D 15 Amp 1 Pole 277 Volt Bolt-On Molded Case Circuit Breaker

EJB14015 - Square D 15 Amp 1 Pole 277 Volt Bolt-On Molded Case Circuit Breaker

EJB14015 - Square D - Molded Case Circuit Breaker

Bolt-On - 15 Amp - 1 Pole - 277 Volt

Schneider Electric

Limited availability

EJB36050 - Square D 50 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker

EJB36050 - Square D 50 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker

EJB36050 - Square D - Molded Case Circuit Breaker

Bolt-On - 50 Amp - 3 Pole - 600 Volt

Schneider Electric

EJB16015 - Square D 15 Amp 1 Pole 347 Volt Bolt-On Molded Case Circuit Breaker

EJB16015 - Square D 15 Amp 1 Pole 347 Volt Bolt-On Molded Case Circuit Breaker

EJB16015 - Square D - Molded Case Circuit Breaker

Bolt-On - 15 Amp - 1 Pole - 347 Volt

Schneider Electric

EJB36070 - Square D 70 Amp 3 Pole 600 Volt Bolt-On Circuit Breaker

EJB36070 - Square D 70 Amp 3 Pole 600 Volt Bolt-On Circuit Breaker

EJB36070 - Square D - Molded Case Circuit Breaker

Bolt-On - 70 Amp - 3 Pole - 600 Volt

Schneider Electric

EJB16020 - Square D 20 Amp 1 Pole 347 Volt Bolt-On Circuit Molded Case Breaker

EJB16020 - Square D 20 Amp 1 Pole 347 Volt Bolt-On Circuit Molded Case Breaker

EJB16020 - Square D - Molded Case Circuit Breaker

Bolt-On - 20 Amp - 1 Pole - 347 Volt

Schneider Electric

EJB36040 - Square D 40 Amp 3 Pole 600 Volt Bolt-On Circuit Breaker

EJB36040 - Square D 40 Amp 3 Pole 600 Volt Bolt-On Circuit Breaker

EJB36040 - Square D - Molded Case Circuit Breaker

Bolt-On - 40 Amp - 3 Pole - 600 Volt

Schneider Electric

LDL36400U31X - Square D 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker

LDL36400U31X - Square D - Molded Case Circuit Breaker

Feed Thru - 400 Amp - 3 Pole - 600 Volt

Schneider Electric

KDC3400 - Eaton - Molded Case Circuit Breaker

KDC3400 - Eaton - Molded Case Circuit Breaker

Feed-Thru - 400 Amp - 3 Pole - 600 Volt

Eaton Cutler-Hammer

Limited availability

EGB36070 - Square D 70 Amp 3 Pole 600 Volt Bolt-On Circuit Breaker

EGB36070 - Square D 70 Amp 3 Pole 600 Volt Bolt-On Circuit Breaker

EGB36070 - Square D - Molded Case Circuit Breaker

Bolt-On - 70 Amp - 3 Pole - 600 Volt

Schneider Electric

EGB36020 - Square D 20 Amp 3 Pole 600 Volt Bolt-On Circuit Molded Case Breaker

EGB36020 - Square D 20 Amp 3 Pole 600 Volt Bolt-On Circuit Molded Case Breaker

EGB36020 - Square D - Molded Case Circuit Breaker

Bolt-On - 20 Amp - 3 Pole - 600 Volt

Schneider Electric

HDA260302 - Square D 30 Amp 2 Pole 600 Volt Plug-In Molded Case Circuit Breaker

HDA260302 - Square D - Molded Case Circuit Breaker

I-Line Plug-In - 30 Amp - 2 Pole - 600 Volt

Schneider Electric

HMCP600L6W - Eaton - Molded Case Circuit Breaker

HMCP600L6W - Eaton - Molded Case Circuit Breaker

Bolt-On - 600 Amp - 3 Pole - 600 Volt

Eaton Cutler-Hammer

Save $2,800 CAD

HKD3300 - Eaton - Molded Case Circuit Breaker

HKD3300 - Eaton - Molded Case Circuit Breaker

Feed-Thru - 300 Amp - 3 Pole - 600 Volt

Eaton Cutler-Hammer

SFHA24AT0250 - GE 250 Amp 2 Pole 600 Volt Bolt-On Molded Case Circuit Breaker

SFHA24AT0250 - GE - Molded Case Circuit Breaker

Bolt-On - 250 Amp - 2 Pole - 480 Volt

HJD63B400 - Siemens - Molded Case Circuit Breaker

Bolt-On - 400 Amp - 3 Pole - 600 Volt

HED43B050 - Siemens 50 Amp 3 Pole 480 Volt Bolt-On Molded Case Circuit Breaker

HED43B050 - Siemens - Molded Case Circuit Breaker

Bolt On - 50 Amp - 3 Pole - 480 Volt

ED42B100 - Siemens - Molded Case Circuit Breaker

Bolt On - 100 Amp - 2 Pole - 480 Volt

ED23B100 - Siemens 100 Amp 3 Pole 240 Volt Bolt-On Molded Case Circuit Breaker

ED23B100 - Siemens - Molded Case Circuit Breaker

Bolt On - 100 Amp - 3 Pole - 240 Volt

EGB34040 - Square D 40 Amp 3 Pole 480 Volt Bolt-On Circuit Breaker

EGB34040 - Square D 40 Amp 3 Pole 480 Volt Bolt-On Circuit Breaker

EGB34040 - Square D - Molded Case Circuit Breaker

Bolt-On - 40 Amp - 3 Pole - 480 Volt

Schneider Electric

EGB24015 - Square D 15 Amp 2 Pole 480 Volt Bolt-On Circuit Breaker

EGB24015 - Square D 15 Amp 2 Pole 480 Volt Bolt-On Circuit Breaker

EGB24015 - Square D - Molded Case Circuit Breaker

Bolt-On - 15 Amp - 2 Pole - 480 Volt

Schneider Electric

NGG3B050L - Siemens - Molded Case Circuit Breaker

NGG3B050L - Siemens - Molded Case Circuit Breaker

Feed-Thru - 50 Amp - 3 Pole - 600 Volt

ED42B040 - Siemens - Molded Case Circuit Breaker

Bolt On - 40 Amp - 2 Pole - 480 Volt

CQD330 - Siemens - Molded Case Circuit Breaker

CQD330 - Siemens - Molded Case Circuit Breaker

Feed Thru - 30 Amp - 3 Pole - 480 Volt

CQD3100 - Siemens - Molded Case Circuit Breaker

CQD3100 - Siemens - Molded Case Circuit Breaker

Feed Thru - 100 Amp - 3 Pole - 480 Volt

CQD2100 - Siemens - Molded Case Circuit Breaker

CQD2100 - Siemens - Molded Case Circuit Breaker

Feed Thru - 100 Amp - 2 Pole - 480 Volt

CQD120 - Siemens - Molded Case Circuit Breaker

CQD120 - Siemens - Molded Case Circuit Breaker

Feed Thru - 20 Amp - 1 Pole - 277 Volt

Limited availability

ED61B015L - Siemens - Molded Case Circuit Breaker

ED61B015L - Siemens - Molded Case Circuit Breaker

Feed Thru - 15 Amp - 1 Pole - 600 Volt

QN2175R - Siemens - Molded Case Circuit Breaker

QN2175R - Siemens - Molded Case Circuit Breaker

Plug In - 175 Amp - 2 Pole - 240 Volt

QJH23B200 - Siemens - Molded Case Circuit Breaker

QJH23B200 - Siemens - Molded Case Circuit Breaker

Bolt On - 200 Amp - 3 Pole - 240 Volt

PXD63B160 - Siemens - Molded Case Circuit Breaker

Bolt On - 1600 Amp - 3 Pole - 600 Volt

NGB3B090B - Siemens - Molded Case Circuit Breaker

NGB3B090B - Siemens - Molded Case Circuit Breaker

Bolt On - 90 Amp - 3 Pole - 600 Volt

NGB3B030B - Siemens - Molded Case Circuit Breaker

NGB3B030B - Siemens - Molded Case Circuit Breaker

Bolt On - 30 Amp - 3 Pole - 600 Volt

MB9301 - Siemens - Molded Case Circuit Breaker

MB9301 - Siemens - Molded Case Circuit Breaker

Bolt On - 1600 Amp - 600 Volt

JXD63B300 - Siemens - Molded Case Circuit Breaker

Bolt-on - 300 Amp - 3 Pole - 600 Volt

JD63T300 - Siemens 300 Amp 3 Pole 600 Volt Molded Case Circuit Breaker Trip Unit

JD63T300 - Siemens - Trip Unit

Feed Thru - 300 Amp - 3 Pole - 600 Volt

HHJD63F400 - Siemens - Frame

Bolt-on - 400 Amp - 3 Pole - 600 Volt

HFD63F250 - Siemens 250 Amp 3 Pole 600 Volt Molded Case Circuit Breaker Frame

HFD63F250 - Siemens - Frame

Bolt-on - 250 Amp - 3 Pole - 600 Volt

Limited availability

FXD63B070 - Siemens - Molded Case Circuit Breaker

FXD63B070 - Siemens - Molded Case Circuit Breaker

Bolt-on - 70 Amp - 3 Pole - 600 Volt

ED63B040L - Siemens - Molded Case Circuit Breaker

ED63B040L - Siemens - Molded Case Circuit Breaker

Feed Thru - 40 Amp - 3 Pole - 600 Volt

ED63A100 - Siemens - Molded Case Circuit Breaker

ED63A100 - Siemens - Molded Case Circuit Breaker

Bolt-on - 100 Amp - 3 Pole - 600 Volt

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Molded Case Breakers