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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
HMDL3450W
HMDL3450W
Limited Stock
From
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Westinghouse
450
600
HMDL3500V
HMDL3500V
Limited Stock
From
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Eaton
500
600
HMDL3500W
HMDL3500W
Limited Stock
From
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Cutler Hammer
500
600
JD3070S41
JD3070S41
Limited Stock
From
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Westinghouse
70
600
JD3070VW
JD3070VW
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From
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Cutler Hammer
70
600
JD3070W
JD3070W
Limited Stock
From
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Cutler Hammer
70
600
JD3070Y
JD3070Y
Limited Stock
From
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Westinghouse
70
600
JD3090S41
JD3090S41
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Westinghouse
90
600
JD3090V
JD3090V
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Westinghouse
90
600
JD3090VW
JD3090VW
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Westinghouse
90
600
JD3090W
JD3090W
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Westinghouse
90
600
JD3090Y
JD3090Y
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Westinghouse
90
600
JD3100S41
JD3100S41
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Eaton
100
600
JD3100W
JD3100W
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Eaton
100
600
JD3100Y
JD3100Y
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Eaton
100
600
JD3125S41
JD3125S41
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From
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Eaton
125
600
JD3125VW
JD3125VW
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Westinghouse
125
600
JD3150S41
JD3150S41
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From
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Cutler Hammer
150
600
JD3150VW
JD3150VW
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Cutler Hammer
150
600
JD3175S41
JD3175S41
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From
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Westinghouse
175
600
JD3175VW
JD3175VW
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From
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Westinghouse
175
600
JD3200VW
JD3200VW
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From
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Cutler Hammer
200
600
JD3225S41
JD3225S41
Limited Stock
From
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Westinghouse
225
600
JD3225VW
JD3225VW
Limited Stock
From
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Cutler Hammer
225
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.