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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
LBB31500SM
LBB31500SM
Limited Stock
From
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Westinghouse
400
600
LBB31500SMW
LBB31500SMW
Limited Stock
From
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Westinghouse
400
600
LBB3150A
LBB3150A
Limited Stock
From
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Westinghouse
150
600
LBB3150S
LBB3150S
Limited Stock
From
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Westinghouse
150
600
LBB3150SA
LBB3150SA
Limited Stock
From
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Westinghouse
150
600
LBB3150SW
LBB3150SW
Limited Stock
From
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Westinghouse
150
600
LBB3150W
LBB3150W
Limited Stock
From
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Westinghouse
150
600
LBB3175
LBB3175
Limited Stock
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Westinghouse
175
600
LBB31750M
LBB31750M
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From
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Westinghouse
400
600
LBB31750MW
LBB31750MW
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From
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Westinghouse
400
600
LBB31750SM
LBB31750SM
Limited Stock
From
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Westinghouse
400
600
LBB31750SMW
LBB31750SMW
Limited Stock
From
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Westinghouse
400
600
LBB3175A
LBB3175A
Limited Stock
From
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Westinghouse
175
600
LBB3175S
LBB3175S
Limited Stock
From
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Westinghouse
175
600
LBB3175SA
LBB3175SA
Limited Stock
From
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Westinghouse
175
600
LBB3175SW
LBB3175SW
Limited Stock
From
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Westinghouse
175
600
LBB3175W
LBB3175W
Limited Stock
From
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Westinghouse
175
600
LBB3200
LBB3200
Limited Stock
From
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Westinghouse
200
600
LBB3200A
LBB3200A
Limited Stock
From
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Westinghouse
200
600
LBB3200S
LBB3200S
Limited Stock
From
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Westinghouse
200
600
LBB3200SA
LBB3200SA
Limited Stock
From
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Westinghouse
200
600
LBB3200SW
LBB3200SW
Limited Stock
From
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Westinghouse
200
600
LBB3200W
LBB3200W
Limited Stock
From
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Westinghouse
200
600
LBB3225
LBB3225
Limited Stock
From
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Westinghouse
225
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.