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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
LBB32250M
LBB32250M
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Westinghouse
400
600
LBB32250MW
LBB32250MW
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Westinghouse
400
600
LBB32250SM
LBB32250SM
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Westinghouse
400
600
LBB32250SMW
LBB32250SMW
Limited Stock
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Westinghouse
400
600
LBB3225A
LBB3225A
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Westinghouse
225
600
LBB3225S
LBB3225S
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Westinghouse
225
600
LBB3225SA
LBB3225SA
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Westinghouse
225
600
LBB3225SW
LBB3225SW
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Westinghouse
225
600
LBB3250A
LBB3250A
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Eaton
250
600
LBB3250S
LBB3250S
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Westinghouse
250
600
LBB3250SA
LBB3250SA
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Westinghouse
250
600
LBB3250SW
LBB3250SW
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Westinghouse
250
600
LBB3250W
LBB3250W
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Westinghouse
250
600
LBB33000M
LBB33000M
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Westinghouse
400
600
LBB33000MW
LBB33000MW
Limited Stock
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Westinghouse
400
600
LBB33000SM
LBB33000SM
Limited Stock
From
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Westinghouse
400
600
LBB33000SMW
LBB33000SMW
Limited Stock
From
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Westinghouse
400
600
LBB3300A
LBB3300A
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Westinghouse
300
600
LBB3300S
LBB3300S
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Westinghouse
300
600
LBB3300SA
LBB3300SA
Limited Stock
From
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Westinghouse
300
600
LBB3300SW
LBB3300SW
Limited Stock
From
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Westinghouse
300
600
LBB3350A
LBB3350A
Limited Stock
From
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Westinghouse
350
600
LBB3350SA
LBB3350SA
Limited Stock
From
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Westinghouse
350
600
LBB3350SW
LBB3350SW
Limited Stock
From
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Westinghouse
350
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.