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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
JGMPH050G
JGMPH050G
Limited Stock
From
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Westinghouse
50
600
JGMPH100G
JGMPH100G
Limited Stock
From
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Westinghouse
100
600
JGMPH250G
JGMPH250G
Limited Stock
From
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Cutler Hammer
250
600
JGMPS100G
JGMPS100G
Limited Stock
From
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Westinghouse
100
600
JGMPS250G
JGMPS250G
Limited Stock
From
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Cutler Hammer
250
600
JW2125
JW2125
Limited Stock
From
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Westinghouse
125
690
JW2250
JW2250
Limited Stock
From
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Westinghouse
250
690
JW2250KW
JW2250KW
Limited Stock
From
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Eaton
250
690
JW3125
JW3125
Limited Stock
From
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Westinghouse
125
690
JW3160
JW3160
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From
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Eaton
160
690
JW3200
JW3200
Limited Stock
From
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Eaton
200
690
JW3250F
JW3250F
Limited Stock
From
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Westinghouse
250
690
JW3250KW
JW3250KW
Limited Stock
From
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Cutler Hammer
250
690
JW4125
JW4125
Limited Stock
From
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Westinghouse
125
690
JW4160
JW4160
Limited Stock
From
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Westinghouse
160
690
JW4200
JW4200
Limited Stock
From
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Westinghouse
200
690
JW4250
JW4250
Limited Stock
From
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Eaton
250
690
JW4250F
JW4250F
Limited Stock
From
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Eaton
250
690
JW4250KW
JW4250KW
Limited Stock
From
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Cutler Hammer
250
690
JWC3200
JWC3200
Limited Stock
From
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Westinghouse
200
690
JWC3250
JWC3250
Limited Stock
From
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Eaton
250
690
JWC3250F
JWC3250F
Limited Stock
From
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Cutler Hammer
250
690
KA3225A
KA3225A
Limited Stock
From
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Westinghouse
225
600
KDB2400C
KDB2400C
Limited Stock
From
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Westinghouse
400
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.