Refine Results

In Stock

Applied Filters:

Molded Case Circuit Breaker

Siemens

Subcategory

Molded Case Circuit Breaker

Manufacturers (1)

Siemens

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
QJ22B225H	In Stock From $394^.24	Siemens	225	240
QJ23B100	In Stock From $779^.57	Siemens	100	240
QJ23B110H	In Stock From $714^.24	Siemens	110	240
QJ23B125	In Stock From $485^.39	Siemens	125	240
QJ23B150	In Stock From $468^.94	Siemens	150	240
QJ23B200	In Stock From $642^.39	Siemens	200	240
QJ23B225	In Stock From $357^.42	Siemens	225	240
QR22B100	In Stock From $337^.16	Siemens	100	240
QR22B150	In Stock From $207^.95	Siemens	150	240
QR22B200	In Stock From $214^.44	Siemens	200	240
QR23B150	In Stock From $810^.91	Siemens	150	240
QR23B200	In Stock From $548^.34	Siemens	200	240
QR23B225	In Stock From $538^.66	Siemens	225	240
SCND69120ANT	In Stock From $7,455^.13	Siemens	1200	600
B120HH00S01	In Stock From $199^.41	Siemens	20	240
B125H	In Stock From $25^.46	Siemens	25	240
B125H00S01	In Stock From $17^.30	Siemens	25	240
B130H00S01	In Stock From $114^.91	Siemens	30	240
B130HID	In Stock From $10^.67	Siemens	30	120
B135	In Stock From $11^.71	Siemens	35	240
B135H	In Stock From $26^.88	Siemens	35	240
B140	In Stock From $12^.00	Siemens	40	240
B140H	In Stock From $29^.20	Siemens	40	240
B145	In Stock From $11^.71	Siemens	45	240

1
...
20
21
22
...
1,177

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.