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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
JG3250S13
JG3250S13
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Westinghouse
250
600
JG3250S14
JG3250S14
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Eaton
250
600
JG3250S15
JG3250S15
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Westinghouse
250
600
JG3250S16
JG3250S16
Limited Stock
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Eaton
250
600
JG3250S17
JG3250S17
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Eaton
250
600
JG3250S18
JG3250S18
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Cutler Hammer
250
600
JG3250S19
JG3250S19
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Cutler Hammer
250
600
JG3250S20
JG3250S20
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Westinghouse
250
600
JG3250S29
JG3250S29
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Eaton
250
600
JG3250S30
JG3250S30
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Westinghouse
250
600
JG3250S31
JG3250S31
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Westinghouse
250
600
JG3250S32
JG3250S32
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Eaton
250
600
JG3250S33
JG3250S33
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Westinghouse
250
600
JG3250S34
JG3250S34
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Westinghouse
250
600
JG3250S35
JG3250S35
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Eaton
250
600
JG3250S36
JG3250S36
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Westinghouse
250
600
JG3250S37
JG3250S37
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Cutler Hammer
250
600
JG3250S38
JG3250S38
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Eaton
250
600
JG3250S39
JG3250S39
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Westinghouse
250
600
JG3250S40
JG3250S40
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Westinghouse
250
600
JG3250S44
JG3250S44
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Cutler Hammer
250
600
JG3250S49
JG3250S49
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From
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Westinghouse
250
600
JG3250S50
JG3250S50
Limited Stock
From
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Cutler Hammer
250
600
JG3250S51
JG3250S51
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From
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Eaton
250
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.