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Molded Case Circuit Breaker

Westinghouse

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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
LM3500	In Stock From $495^.34	Westinghouse	500	600
LM3500L	In Stock From $2,708^.51	Cutler Hammer	500	600
LM3600L	In Stock From $2,285^.78	Cutler Hammer	600	600
LM3700	In Stock From $1,574^.21	Westinghouse	700	600
LM3700L	In Stock From $2,614^.61	Westinghouse	700	600
LM3800	In Stock From $1,289^.37	Westinghouse	800	600
LM3800L	In Stock From $1,406^.57	Westinghouse	800	600
LM3800PR	In Stock From $11,697^.91	Westinghouse	800	600
LM3800PRF	In Stock From $11,697^.91	Westinghouse	800	600
LM3900	In Stock From $1,540^.17	Cutler Hammer	900	600
LM3900L	In Stock From $2,311^.86	Westinghouse	900	600
MA3800N	In Stock From $559^.44	Westinghouse	800	600
MAY3200	In Stock From $1,616^.84	Westinghouse	200	240
MAY3250	In Stock From $1,818^.94	Westinghouse	250	240
MAY3300	In Stock From $1,818^.94	Westinghouse	300	240
MAY3350	In Stock From $1,818^.94	Westinghouse	350	240
MAY3400	In Stock From $1,818^.94	Westinghouse	400	240
MAY3450	In Stock From $1,818^.94	Westinghouse	450	240
MAY3500	In Stock From $1,616^.84	Westinghouse	500	240
MAY3600	In Stock From $1,616^.84	Westinghouse	600	240
MAY3700	In Stock From $1,818^.94	Westinghouse	700	240
MAY3800	In Stock From $1,818^.94	Westinghouse	800	240
MAY3800F	In Stock From $1,350^.00	Westinghouse	800	240
MCYA3800F	In Stock From $139^.60	Westinghouse	800	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.