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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
LWC4630
LWC4630
Limited Stock
From
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Westinghouse
630
690
LWC4630F
LWC4630F
Limited Stock
From
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Westinghouse
630
690
MDL2500
MDL2500
Limited Stock
From
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Cutler Hammer
500
600
MDL2600
MDL2600
Limited Stock
From
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Eaton
600
600
MDL2700
MDL2700
Limited Stock
From
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Eaton
700
600
MDLB2300
MDLB2300
Limited Stock
From
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Westinghouse
300
600
MDLB2350
MDLB2350
Limited Stock
From
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Eaton
350
600
MDLB2400
MDLB2400
Limited Stock
From
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Westinghouse
400
600
MDLB2450
MDLB2450
Limited Stock
From
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Cutler Hammer
450
600
MDLB2500
MDLB2500
Limited Stock
From
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Eaton
500
600
MDLB2600
MDLB2600
Limited Stock
From
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Eaton
600
600
MDLB2700
MDLB2700
Limited Stock
From
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Eaton
700
600
MDLB2800
MDLB2800
Limited Stock
From
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Westinghouse
800
600
MDLB3500V
MDLB3500V
Limited Stock
From
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Westinghouse
500
600
MDLB3800T32W
MDLB3800T32W
Limited Stock
From
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Eaton
800
600
MDLB3800T35W
MDLB3800T35W
Limited Stock
From
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Cutler Hammer
800
600
MDLB3800T36W
MDLB3800T36W
Limited Stock
From
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Westinghouse
800
600
NBDC3800MW
NBDC3800MW
Limited Stock
From
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Eaton
800
600
NCA31200F
NCA31200F
Limited Stock
From
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Westinghouse
1200
600
NCG31200
NCG31200
Limited Stock
From
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Westinghouse
1200
600
ND212T32W
ND212T32W
Limited Stock
From
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Westinghouse
1200
600
ND212T35W
ND212T35W
Limited Stock
From
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Westinghouse
1200
600
ND212T36W
ND212T36W
Limited Stock
From
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Westinghouse
1200
600
ND2800T33W
ND2800T33W
Limited Stock
From
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Westinghouse
800
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.