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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
NJLFE36400M36
NJLFE36400M36
Limited Stock
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Schneider Electric
400
690
NJLFE36630E20
NJLFE36630E20
Limited Stock
From
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Merlin Gerin
630
690
NJLFE36630M64
NJLFE36630M64
Limited Stock
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Square D
630
690
NJLFE46150E20
NJLFE46150E20
Limited Stock
From
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Merlin Gerin
150
690
NJLFE46150F40
NJLFE46150F40
Limited Stock
From
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Merlin Gerin
150
690
NJLFE46250E20
NJLFE46250E20
Limited Stock
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Square D
250
690
NJLFE46250F40
NJLFE46250F40
Limited Stock
From
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Merlin Gerin
250
690
NJLFE46400E20
NJLFE46400E20
Limited Stock
From
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Merlin Gerin
400
690
NJLFE46400F40
NJLFE46400F40
Limited Stock
From
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Square D
400
690
NJLFE46630E20
NJLFE46630E20
Limited Stock
From
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Square D
630
690
NJLFE46630F63
NJLFE46630F63
Limited Stock
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Schneider Electric
630
690
NJLLE36150E20
NJLLE36150E20
Limited Stock
From
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Schneider Electric
150
690
NJLLE36200E20
NJLLE36200E20
Limited Stock
From
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Merlin Gerin
200
690
NJLLE36400E20
NJLLE36400E20
Limited Stock
From
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Square D
400
690
NJLLE36400M36
NJLLE36400M36
Limited Stock
From
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Schneider Electric
400
690
NJLLE36400M64
NJLLE36400M64
Limited Stock
From
Get Price
Schneider Electric
400
690
NJLLE36630E20
NJLLE36630E20
Limited Stock
From
Get Price
Schneider Electric
630
690
NJLLE36630M64
NJLLE36630M64
Limited Stock
From
Get Price
Square D
630
690
NJLLE46150E20
NJLLE46150E20
Limited Stock
From
Get Price
Merlin Gerin
150
690
NJLLE46250E20
NJLLE46250E20
Limited Stock
From
Get Price
Schneider Electric
250
690
NJLLE46400E20
NJLLE46400E20
Limited Stock
From
Get Price
Schneider Electric
400
690
NJLLE46630E20
NJLLE46630E20
Limited Stock
From
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Square D
630
690
NJNFE1150E20
NJNFE1150E20
Limited Stock
From
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Merlin Gerin
150
1000
NJNFE1250E20
NJNFE1250E20
Limited Stock
From
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Merlin Gerin
250
1000
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.