Refine Results

In Stock

Applied Filters:

Molded Case Circuit Breaker

Subcategory

Molded Case Circuit Breaker

Manufacturers

All

Amperage

All

Voltage

All

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.

SORT BY

Part Number	PRICE	Manufacturer	Amperage	Voltage
KD4300W	In Stock From $1,878^.18	Westinghouse	300	600
KD4350W	In Stock From $1,627^.62	Eaton	350	600
KDB3125L	In Stock From $934^.01	Eaton	125	600
KDC3100X	In Stock From $1,018^.27	Westinghouse	100	600
KDC3100Y	In Stock From $1,018^.27	Westinghouse	100	600
KDC3125X	In Stock From $2,507^.32	Westinghouse	125	600
KDC3125Y	In Stock From $2,507^.32	Westinghouse	125	600
KDC3150X	In Stock From $2,436^.92	Eaton	150	600
KDC3150Y	In Stock From $4,871^.48	Westinghouse	150	600
KDC3175X	In Stock From $2,147^.16	Eaton	175	600
KDC3175Y	In Stock From $3,150^.26	Westinghouse	175	600
KDC3200X	In Stock From $2,008^.43	Eaton	200	600
KDC3225X	In Stock From $2,202^.97	Eaton	225	600
KDC3225Y	In Stock From $2,202^.97	Eaton	225	600
KDC3250X	In Stock From $3,114^.71	Westinghouse	250	600
KDC3250Y	In Stock From $2,053^.14	Eaton	250	600
KDC3300L	In Stock From $1,169^.21	Eaton	300	600
KDC3300X	In Stock From $1,698^.10	Westinghouse	300	600
KDC3300Y	In Stock From $5,055^.64	Eaton	300	600
KDC3350L	In Stock From $1,157^.63	Cutler Hammer	350	600
KDC3350X	In Stock From $3,058^.70	Eaton	350	600
KDC3350Y	In Stock From $3,058^.70	Eaton	350	600
KDC3400L	In Stock From $2,951^.45	Eaton	400	600
KDC3400X	In Stock From $2,107^.88	Cutler Hammer	400	600

1
...
348
349
350
...
18,485

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.