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Molded Case Circuit Breaker

Cutler Hammer

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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
MDLB3300W	In Stock From $1,843^.19	Cutler Hammer	300	600
MDLB3350W	In Stock From $1,300^.79	Eaton	350	600
MDLB3400W	In Stock From $6,008^.23	Westinghouse	400	600
MDLB3450	In Stock From $3,777^.88	Cutler Hammer	450	600
MDLB3450W	In Stock From $1,562^.47	Westinghouse	450	600
MDLB3500W	In Stock From $1,965^.91	Westinghouse	500	600
MDLB3600W	In Stock From $1,971^.22	Westinghouse	600	600
MDLB3700W	In Stock From $1,710^.09	Eaton	700	600
NB3500P	In Stock From $2,349^.12	Cutler Hammer	500	600
NB3800P	In Stock From $2,664^.50	Cutler Hammer	800	600
NBDC3900MW	In Stock From $7,229^.10	Eaton	900	600
NG3800S02	In Stock From $7,721^.55	Westinghouse	800	600
NGC308033E	In Stock From $6,986^.34	Eaton	-	-
NGC308033EC	In Stock From $11,303^.77	Eaton	-	-
NGC312035EC	In Stock From $10,853^.26	Eaton	-	-
NGC312036EC	In Stock From $8,044^.57	Eaton	-	-
NN361200A	In Stock From $1,749^.67	Eaton	1200	600
QB1015AFGF	In Stock From $158^.82	Cutler Hammer	15	240
QBGFEP1015W2	In Stock From $193^.33	Eaton	15	120
QBGFEP1020W1	In Stock From $230^.81	Eaton	20	120
QBHCAF1015	In Stock From $264^.43	Cutler Hammer	15	240
QBHW1015S	In Stock From $339^.98	Cutler Hammer	15	240
QBHW1030S	In Stock From $243^.70	Cutler Hammer	30	240
QBHW1045	In Stock From $49^.48	Cutler Hammer	45	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.