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Molded Case Circuit Breaker

For circuit breaker systems in commercial and industrial facilities, molded case circuit breakers are among the most widely used components for reliable overcurrent protection and electrical distribution. Molded case circuit breakers provide automatic circuit interruption during overload or short circuit conditions, protecting electrical systems and equipment from damage while enabling manual switching control. Electrical.com carries an extensive selection of molded case circuit breakers from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of commercial buildings, manufacturing facilities, data centers, and industrial power distribution applications.
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Part Number
PRICE
Manufacturer
Amperage
Voltage
ELKW4250
ELKW4250
Limited Stock
From
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Westinghouse
250
690
ELKW4315
ELKW4315
Limited Stock
From
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Westinghouse
315
690
ELKW4400
ELKW4400
Limited Stock
From
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Westinghouse
400
690
ELKWC3200
ELKWC3200
Limited Stock
From
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Cutler Hammer
200
690
ELKWC3250
ELKWC3250
Limited Stock
From
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Westinghouse
250
690
ELKWC3315
ELKWC3315
Limited Stock
From
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Westinghouse
315
690
ELKWC3400
ELKWC3400
Limited Stock
From
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Westinghouse
400
690
FB2150LK
FB2150LK
Limited Stock
From
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Westinghouse
150
600
FB3150LK
FB3150LK
Limited Stock
From
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Westinghouse
150
600
FB3150SLK
FB3150SLK
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From
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Cutler Hammer
150
600
FB3150SLKC
FB3150SLKC
Limited Stock
From
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Westinghouse
150
600
FB31550SMRL
FB31550SMRL
Limited Stock
From
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Cutler Hammer
100
600
FB31800SMRL
FB31800SMRL
Limited Stock
From
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Westinghouse
150
600
FB3190SMRL
FB3190SMRL
Limited Stock
From
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Westinghouse
25
600
FB3270SMRL
FB3270SMRL
Limited Stock
From
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Cutler Hammer
30
600
FB3480SMRL
FB3480SMRL
Limited Stock
From
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Westinghouse
50
600
FB4100LK
FB4100LK
Limited Stock
From
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Westinghouse
100
600
FB4150LK
FB4150LK
Limited Stock
From
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Westinghouse
150
600
FD4200V
FD4200V
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From
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Eaton
200
600
FD4225E
FD4225E
Limited Stock
From
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Westinghouse
225
600
FD4225V
FD4225V
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From
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Westinghouse
225
600
FD4225VL
FD4225VL
Limited Stock
From
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Westinghouse
225
600
FDB3020A02
FDB3020A02
Limited Stock
From
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Cutler Hammer
20
600
FDB3025LD08
FDB3025LD08
Limited Stock
From
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Westinghouse
25
600
Popular Molded Case Circuit Breaker Manufacturers

Electrical.com stocks the largest inventory of molded case circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified MCCBs available for immediate shipment. From standard thermal-magnetic breakers to electronic trip units across all amperage ratings, we have what you need when others say no. Our comprehensive molded case circuit breaker inventory spans all voltage and current ratings, frame sizes, and interrupting capacities from all major manufacturers including current production and discontinued models from legacy suppliers. Available in new factory condition, surplus stock, and re-certified options‚ All backed by our standard 2-year Electrical.com warranty. Our molded case circuit breakers serve critical applications across commercial buildings, industrial facilities, manufacturing plants, data centers, healthcare facilities, distribution panels, motor control centers, switchboards, and power distribution systems.


Whether you're maintaining legacy equipment with obsolete MCCB models or sourcing current production breakers for new installations and retrofits, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need molded case circuit breakers now? Call 877-999-7077 or email [email protected]. With same-day shipping available and the right parts ready to ship from our nearest warehouse location, Electrical.com gets your operations back online fast. We can say yes when others have to say no.