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
S284-K63	Limited Stock From Get Price	ABB	63	400
S284-K8	Limited Stock From Get Price	ABB	8	400
S284C100	Limited Stock From Get Price	ABB	100	400
S284UCK1	Limited Stock From Get Price	ABB	1	400
S284UCK10	Limited Stock From Get Price	ABB	10	400
S284UCK16	Limited Stock From Get Price	ABB	16	400
S284UCK2	Limited Stock From Get Price	ABB	2	400
S284UCK20	Limited Stock From Get Price	ABB	20	400
S284UCK25	Limited Stock From Get Price	ABB	25	400
S284UCK3	Limited Stock From Get Price	ABB	3	400
S284UCK32	Limited Stock From Get Price	ABB	32	400
S284UCK4	Limited Stock From Get Price	ABB	4	400
S284UCK40	Limited Stock From Get Price	ABB	40	400
S284UCK50	Limited Stock From Get Price	ABB	50	400
S284UCK6	Limited Stock From Get Price	ABB	6	400
S284UCK63	Limited Stock From Get Price	ABB	63	400
S284UCK8	Limited Stock From Get Price	ABB	8	400
S3N-2P-20A	Limited Stock From Get Price	ABB	20	600
S3N-3P-50A	Limited Stock From Get Price	ABB	50	600
S4N-2P-250A	Limited Stock From Get Price	ABB	250	600
SELA36AG0030	Limited Stock From Get Price	General Electric	30	600
SELA36AG0060	Limited Stock From Get Price	General Electric	60	600
SELA36AG0100	Limited Stock From Get Price	General Electric	100	600
SELA36AG0150	Limited Stock From Get Price	General Electric	150	600

1
...
16,703
16,704
16,705
...
18,487

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.