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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
HKD4300
HKD4300
Limited Stock
From
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Westinghouse
300
600
HKD4300W
HKD4300W
Limited Stock
From
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Cutler Hammer
300
600
HKD4350
HKD4350
Limited Stock
From
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Eaton
350
600
HKD4350W
HKD4350W
Limited Stock
From
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Eaton
350
600
HKD4400W
HKD4400W
Limited Stock
From
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Cutler Hammer
400
600
KD4225WA13S10
KD4225WA13S10
Limited Stock
From
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Westinghouse
225
600
LGE340035W
LGE340035W
Limited Stock
From
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Eaton
400
600
LGE340036W
LGE340036W
Limited Stock
From
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Eaton
400
600
NGH312032MZG
NGH312032MZG
Limited Stock
From
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Eaton
-
-
NGH312036MZG
NGH312036MZG
Limited Stock
From
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Eaton
-
-
NGS316032M
NGS316032M
Limited Stock
From
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Eaton
-
-
NGS316033M
NGS316033M
Limited Stock
From
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Eaton
-
-
NGS316035M
NGS316035M
Limited Stock
From
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Eaton
-
-
NGS316036M
NGS316036M
Limited Stock
From
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Eaton
-
-
NGS316038M
NGS316038M
Limited Stock
From
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Eaton
-
-
NGS316039M
NGS316039M
Limited Stock
From
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Eaton
-
-
BAB2055H
BAB2055H
Limited Stock
From
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Eaton
55
240
BR240B
BR240B
Limited Stock
From
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Cutler Hammer
40
240
CCVH2100W
CCVH2100W
Limited Stock
From
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Eaton
100
240
CCVH2100Y
CCVH2100Y
Limited Stock
From
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Eaton
100
240
CCVH2150W
CCVH2150W
Limited Stock
From
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Eaton
150
240
CCVH2150Y
CCVH2150Y
Limited Stock
From
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Eaton
150
240
CCVH2175W
CCVH2175W
Limited Stock
From
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Eaton
175
240
CCVH2175X
CCVH2175X
Limited Stock
From
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Eaton
175
240
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.