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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
NJHF36600M42
NJHF36600M42
Limited Stock
From
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Merlin Gerin
600
600
NJHL36000S60
NJHL36000S60
Limited Stock
From
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Square D
600
600
NJHL36150E20
NJHL36150E20
Limited Stock
From
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Schneider Electric
150
600
NJHL36250E20
NJHL36250E20
Limited Stock
From
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Square D
250
600
NJHL36400M36
NJHL36400M36
Limited Stock
From
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Merlin Gerin
400
600
NJHL36600E20
NJHL36600E20
Limited Stock
From
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Square D
600
600
NJHL36600M42
NJHL36600M42
Limited Stock
From
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Schneider Electric
600
600
NJHN36000S60
NJHN36000S60
Limited Stock
From
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Square D
600
600
NJJF36250U31XTW
NJJF36250U31XTW
Limited Stock
From
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Schneider Electric
250
480
NJJF36250U53XTW
NJJF36250U53XTW
Limited Stock
From
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Schneider Electric
250
480
NJLF36150E20
NJLF36150E20
Limited Stock
From
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Square D
150
600
NJLF36250E20
NJLF36250E20
Limited Stock
From
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Merlin Gerin
250
600
NJLF36400E20
NJLF36400E20
Limited Stock
From
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Merlin Gerin
400
600
NJLF36400F40
NJLF36400F40
Limited Stock
From
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Schneider Electric
400
600
NJLF36600E20
NJLF36600E20
Limited Stock
From
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Merlin Gerin
600
600
NJLF36600F60
NJLF36600F60
Limited Stock
From
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Square D
600
600
NJLFE36150E20
NJLFE36150E20
Limited Stock
From
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Square D
150
690
NJLL36150E20
NJLL36150E20
Limited Stock
From
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Merlin Gerin
150
600
NJLL36400E20
NJLL36400E20
Limited Stock
From
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Schneider Electric
400
600
NJLL36600E20
NJLL36600E20
Limited Stock
From
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Schneider Electric
600
600
NJLN36400E20
NJLN36400E20
Limited Stock
From
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Merlin Gerin
400
600
NJNF36150E20
NJNF36150E20
Limited Stock
From
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Merlin Gerin
150
600
NJNF36150F40
NJNF36150F40
Limited Stock
From
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Schneider Electric
150
600
NJNF36250E20
NJNF36250E20
Limited Stock
From
Get Price
Merlin Gerin
250
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.