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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
HMCP400W5Y
HMCP400W5Y
Limited Stock
From
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Eaton
400
-
HMCP600X6C
HMCP600X6C
Limited Stock
From
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Eaton
600
600
HMCPS003A0S
HMCPS003A0S
Limited Stock
From
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Eaton
3
-
HMCPS030H1S
HMCPS030H1S
Limited Stock
From
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Eaton
30
-
HMDLB3300
HMDLB3300
Limited Stock
From
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Westinghouse
300
600
HMDLB3300W
HMDLB3300W
Limited Stock
From
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Westinghouse
300
600
HMDLB3350
HMDLB3350
Limited Stock
From
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Westinghouse
350
600
HMDLB3350W
HMDLB3350W
Limited Stock
From
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Eaton
350
600
HMDLB3400W
HMDLB3400W
Limited Stock
From
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Westinghouse
400
600
HMDLB3450
HMDLB3450
Limited Stock
From
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Westinghouse
450
600
HMDLB3450W
HMDLB3450W
Limited Stock
From
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Cutler Hammer
450
600
HMDLB3500
HMDLB3500
Limited Stock
From
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Eaton
500
600
HMDLB3500W
HMDLB3500W
Limited Stock
From
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Westinghouse
500
600
HND212T36W
HND212T36W
Limited Stock
From
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Cutler Hammer
1200
600
HND412T32W
HND412T32W
Limited Stock
From
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Westinghouse
1200
600
JA2070A
JA2070A
Limited Stock
From
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Westinghouse
70
600
JA2070AW
JA2070AW
Limited Stock
From
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Westinghouse
70
600
JA2070SV
JA2070SV
Limited Stock
From
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Westinghouse
70
600
JA2070SVW
JA2070SVW
Limited Stock
From
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Westinghouse
70
600
JA2070V
JA2070V
Limited Stock
From
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Westinghouse
70
600
JA2070VW
JA2070VW
Limited Stock
From
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Westinghouse
70
600
JA2070WS
JA2070WS
Limited Stock
From
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Westinghouse
70
600
JA2080WS
JA2080WS
Limited Stock
From
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Westinghouse
80
600
JA2090A
JA2090A
Limited Stock
From
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Westinghouse
90
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.