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
QO290	In Stock From $36^.74	Schneider Electric	90	240
QO3100VH	In Stock From $439^.59	Square D	100	240
QO3151021	In Stock From $63^.76	Square D	15	240
QO320GFI	In Stock From $435^.55	Square D	20	240
QO320PL	In Stock From $227^.15	Square D	20	240
QO3301021	In Stock From $500^.59	Square D	30	240
QO330AS	In Stock From $104^.60	Square D	30	240
QO330GFI	In Stock From $696^.47	Square D	30	240
QO330VH	In Stock From $108^.05	Square D	30	240
QO340VH	In Stock From $102^.97	Square D	40	240
QO3501021	In Stock From $345^.41	Square D	50	240
QO350GFI	In Stock From $539^.15	Square D	50	240
QO3601021	In Stock From $462^.57	Square D	60	240
QO360VH	In Stock From $229^.97	Square D	60	240
QO3701021	In Stock From $539^.84	Square D	70	240
QO3801021	In Stock From $476^.44	Square D	80	240
QPF120	In Stock From $16^.79	Siemens	20	120
QR22B100	In Stock From $285^.69	Siemens	100	240
QR23B100	In Stock From $704^.60	Siemens	100	240
QR23B125	In Stock From $701^.86	Siemens	125	240
QR23B200	In Stock From $543^.60	Siemens	200	240
QR23B250	In Stock From $798^.02	Siemens	250	240
QRH23B125	In Stock From $536^.64	Siemens	125	240
QSA1515SPD	In Stock From $110^.14	Siemens	15	240

1
...
181
182
183
...
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.