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Molded Case Circuit Breaker

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Molded Case Circuit Breaker

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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
MP345	In Stock From $44^.53	Murray Corporation	45	240
MQ120	In Stock From $28^.57	Murray Corporation	20	120
MQ130	In Stock From $6^.28	Murray Corporation	30	120
MX36125	In Stock From $1,077^.95	Square D	125	600
MX36600	In Stock From $5,542^.27	Square D	600	600
MX36800	In Stock From $3,549^.66	Square D	800	600
MX36800G	In Stock From $4,281^.24	Square D	800	600
MXD62B800	In Stock From $4,002^.42	Siemens	800	600
MXD63B600	In Stock From $2,310^.35	Siemens	600	600
MXD63B800	In Stock From $2,972^.99	Siemens	800	600
MXL36400	In Stock From $2,634^.04	Square D	400	600
MXL36600	In Stock From $5,542^.27	Square D	600	600
MXL36600G	In Stock From $4,768^.51	Square D	600	600
MXL36800	In Stock From $6,210^.96	Square D	800	600
MXL36800G	In Stock From $14,364^.45	Square D	800	600
MXP36800GMT	In Stock From $17,646^.72	Square D	800	600
NA361000	In Stock From $2,639^.20	Square D	1000	600
NA361200	In Stock From $4,857^.27	Square D	1200	600
NA36600	In Stock From $2,497^.48	Square D	600	600
NA36800	In Stock From $6,772^.22	Square D	800	600
NA36900	In Stock From $4,223^.86	Square D	900	600
NAL361200	In Stock From $4,350^.04	Square D	1200	600
NB21200	In Stock From $6,617^.51	Westinghouse	1200	600
NB221015	In Stock From $59^.60	Federal Pioneer	15	240

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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.