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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
JG3175S29
JG3175S29
Limited Stock
From
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Cutler Hammer
175
600
JG3175S30
JG3175S30
Limited Stock
From
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Westinghouse
175
600
JG3175S31
JG3175S31
Limited Stock
From
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Cutler Hammer
175
600
JG3175S32
JG3175S32
Limited Stock
From
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Westinghouse
175
600
JG3175S33
JG3175S33
Limited Stock
From
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Eaton
175
600
JG3175S34
JG3175S34
Limited Stock
From
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Westinghouse
175
600
JG3175S35
JG3175S35
Limited Stock
From
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Westinghouse
175
600
JG3175S36
JG3175S36
Limited Stock
From
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Westinghouse
175
600
JG3175S37
JG3175S37
Limited Stock
From
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Cutler Hammer
175
600
JG3175S38
JG3175S38
Limited Stock
From
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Westinghouse
175
600
JG3175S39
JG3175S39
Limited Stock
From
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Westinghouse
175
600
JG3175S40
JG3175S40
Limited Stock
From
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Eaton
175
600
JG3175S44
JG3175S44
Limited Stock
From
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Cutler Hammer
175
600
JG3175S48
JG3175S48
Limited Stock
From
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Eaton
175
600
JG3175S49
JG3175S49
Limited Stock
From
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Westinghouse
175
600
JG3175S50
JG3175S50
Limited Stock
From
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Eaton
175
600
JG3175S51
JG3175S51
Limited Stock
From
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Westinghouse
175
600
JG3175S52
JG3175S52
Limited Stock
From
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Westinghouse
175
600
JG3175S53
JG3175S53
Limited Stock
From
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Westinghouse
175
600
JG3175S54
JG3175S54
Limited Stock
From
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Cutler Hammer
175
600
JG3175S55
JG3175S55
Limited Stock
From
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Eaton
175
600
JG3175S56
JG3175S56
Limited Stock
From
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Eaton
175
600
JG3175W
JG3175W
Limited Stock
From
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Cutler Hammer
175
600
JG3175WS09
JG3175WS09
Limited Stock
From
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Westinghouse
175
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.