Refine Results

In Stock

Applied Filters:

Molded Case Circuit Breaker

Zinsco

Subcategory

Molded Case Circuit Breaker

Manufacturers (1)

Zinsco

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
QCAL100	In Stock From $157^.63	Thomas & Betts	100	240
QCAL125	In Stock From $368^.44	Thomas & Betts	125	240
QCAL70	In Stock From $109^.91	Zinsco	70	240
QCAL90	In Stock From $116^.56	Zinsco	90	240
QCB20	In Stock From $78^.56	Thomas & Betts	20	240
QCB30	In Stock From $180^.03	Zinsco	30	240
QCB90	In Stock From $59^.18	Zinsco	90	240
R3840	In Stock From $51^.08	Zinsco	40	240
RC3815	In Stock From $20^.48	Zinsco	15	240
RC3850	In Stock From $40^.86	Zinsco	50	240
RC38AL-40	In Stock From $50^.47	Sylvania	40	240
HAGF215	In Stock From $234^.62	Sylvania	15	120
HAGF220	In Stock From $52^.85	Sylvania	20	120
HAGF230	In Stock From $60^.30	Sylvania	30	120
HAGF240	In Stock From $9^.97	Sylvania	40	120
HAGF30	In Stock From $8^.42	Zinsco	30	120
HRGF20	In Stock From $241^.05	Zinsco	20	120
Q15	In Stock From $17^.66	Siemens	15	120
Q35	In Stock From $18^.36	Siemens	35	240
Q40	In Stock From $12^.71	Siemens	40	120
Q50	In Stock From $23^.77	Siemens	50	120
Q60	In Stock From $16^.12	Siemens	60	120
QB20	In Stock From $42^.62	Thomas & Betts	20	120
QB242020	Limited Stock From Get Price	Zinsco	20	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.