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
Q24020CT2	In Stock From $55^.38	Siemens	40	240
Q24040	In Stock From $34^.61	Siemens	40	240
Q25	In Stock From $34^.71	Siemens	25	240
Q250HH	In Stock From $105^.40	Siemens	50	240
Q260HH	In Stock From $104^.58	Siemens	60	240
Q30	In Stock From $29^.45	Siemens	30	120
Q310001	In Stock From $194^.64	Siemens	100	240
Q36000S07	In Stock From $138^.38	Siemens	60	240
QB1015GF	In Stock From $159^.74	Eaton	15	120
QB15	In Stock From $21^.45	Zinsco	15	120
QB2100	In Stock From $262^.13	Zinsco	100	240
QB2430100	In Stock From Get Price	Zinsco	100	240
QB243015	In Stock From $342^.77	Zinsco	15	240
QB243020	In Stock From $97^.39	Zinsco	20	240
QB243030	In Stock From $537^.47	Zinsco	30	240
QB243040	In Stock From $219^.45	Zinsco	40	240
QB243070	In Stock From $1,194^.47	Zinsco	70	240
QB40	In Stock From $31^.70	Thomas & Betts	40	120
QBA220704	In Stock From $267^.77	Square D	70	240
QBA221104	In Stock From $1,291^.67	Square D	110	240
QBA222004	In Stock From $185^.04	Square D	200	240
QBCAF1020	In Stock From $21^.03	Eaton	20	240
QBF32225TS	In Stock From $161^.04	Square D	225	240
QBGF1020	In Stock From $134^.60	Cutler Hammer	20	120

1
...
675
676
677
...
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.