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
MJL36400SA	In Stock From $670^.00	Schneider Electric	400	600
MJP36400YP	In Stock From $3,482^.34	Square D	400	600
MP115	In Stock From $18^.63	Murray	15	120
MP115AF	In Stock From $42^.39	Murray Corporation	15	120
MP120AF	In Stock From $18^.00	Murray Corporation	20	120
MP120AFC	In Stock From $89^.32	Murray Corporation	20	120
MP120ST	In Stock From $224^.22	Murray Corporation	20	120
MP135	In Stock From $8^.17	Murray Corporation	35	120
MP140	In Stock From $3^.83	Murray	40	120
MP150	In Stock From $2^.39	Murray	50	120
MP2020N	In Stock From $71^.17	Murray Corporation	20	240
MP2030	In Stock From $15^.59	Murray Corporation	30	240
MP215	In Stock From $46^.30	Murray Corporation	15	240
MP215EG	In Stock From $395^.84	Murray Corporation	15	240
MP270	In Stock From $26^.86	Murray Corporation	70	240
MP280	In Stock From $30^.32	Murray Corporation	80	240
MP290	In Stock From $165^.05	Siemens	90	240
MP3030	In Stock From $11^.98	Murray	30	240
MP3100	In Stock From $55^.40	Murray Corporation	100	240
MP325	In Stock From $62^.69	Murray Corporation	25	240
MP335	In Stock From $45^.31	Murray Corporation	35	240
MP340	In Stock From $46^.96	Murray Corporation	40	240
MP350	In Stock From $55^.93	Murray	50	240
MP360	In Stock From $37^.59	Murray Corporation	60	240

1
...
356
357
358
...
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.