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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
JB3070VW
JB3070VW
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Westinghouse
70
600
JB3090SV
JB3090SV
Limited Stock
From
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Westinghouse
90
600
JB3090SVW
JB3090SVW
Limited Stock
From
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Westinghouse
90
600
JB3090V
JB3090V
Limited Stock
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Westinghouse
90
600
JB3090VW
JB3090VW
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Westinghouse
90
600
JB3100SV
JB3100SV
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Westinghouse
100
600
JB3100SVW
JB3100SVW
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Westinghouse
100
600
JB3100V
JB3100V
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Westinghouse
100
600
JB3100VW
JB3100VW
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Westinghouse
100
600
JB3125SV
JB3125SV
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Westinghouse
125
600
JB3125SVW
JB3125SVW
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Westinghouse
125
600
JB3125V
JB3125V
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Westinghouse
125
600
JB3125VW
JB3125VW
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Westinghouse
125
600
JB3150SV
JB3150SV
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Westinghouse
150
600
JB3150SVW
JB3150SVW
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Westinghouse
150
600
JB3150V
JB3150V
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Westinghouse
150
600
JB3150VW
JB3150VW
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Westinghouse
150
600
JB3175SV
JB3175SV
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Westinghouse
175
600
JB3175SVW
JB3175SVW
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Westinghouse
175
600
JB3175V
JB3175V
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Westinghouse
175
600
JB3175VW
JB3175VW
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Westinghouse
175
600
JB3200SV
JB3200SV
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Westinghouse
200
600
JB3200SVW
JB3200SVW
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From
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Westinghouse
200
600
JB3200V
JB3200V
Limited Stock
From
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Westinghouse
200
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.