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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
HND3800T76W
HND3800T76W
Limited Stock
From
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Eaton
800
600
HND3800WK
HND3800WK
Limited Stock
From
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Westinghouse
800
600
HND412T33W
HND412T33W
Limited Stock
From
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Westinghouse
1200
600
HND4800T32W
HND4800T32W
Limited Stock
From
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Eaton
800
600
HND4800T33W
HND4800T33W
Limited Stock
From
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Cutler Hammer
800
600
HND4800WK
HND4800WK
Limited Stock
From
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Westinghouse
800
600
JB2100W
JB2100W
Limited Stock
From
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Westinghouse
100
600
JD2250KW
JD2250KW
Limited Stock
From
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Westinghouse
250
600
JDB2250KW
JDB2250KW
Limited Stock
From
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Westinghouse
250
600
JDB3070C
JDB3070C
Limited Stock
From
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Cutler Hammer
70
600
JDB3070V
JDB3070V
Limited Stock
From
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Westinghouse
70
600
JDB3100C
JDB3100C
Limited Stock
From
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Westinghouse
100
600
JDB3125C
JDB3125C
Limited Stock
From
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Westinghouse
125
600
JDB3125V
JDB3125V
Limited Stock
From
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Westinghouse
125
600
JDB3150V
JDB3150V
Limited Stock
From
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Cutler Hammer
150
600
JDB3150VW
JDB3150VW
Limited Stock
From
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Westinghouse
150
600
JDB3175C
JDB3175C
Limited Stock
From
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Eaton
175
600
JDB3175V
JDB3175V
Limited Stock
From
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Westinghouse
175
600
JDB3200C
JDB3200C
Limited Stock
From
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Westinghouse
200
600
JDB3200V
JDB3200V
Limited Stock
From
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Westinghouse
200
600
JDB3225V
JDB3225V
Limited Stock
From
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Westinghouse
225
600
JDB3250C
JDB3250C
Limited Stock
From
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Eaton
250
600
JDB3250KW
JDB3250KW
Limited Stock
From
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Eaton
250
600
JDB3250V
JDB3250V
Limited Stock
From
Get Price
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.