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
5SY4118-7	In Stock From $42^.97	Siemens	18	400
5SY4120-6	Limited Stock From Get Price	Siemens	20	400
5SY4132-6	In Stock From $24^.01	Siemens	32	400
5SY4132-8	In Stock From $38^.29	Siemens	32	400
5SY4150-8	In Stock From $31^.09	Siemens	50	400
5SY4201-5	Limited Stock From Get Price	Siemens	1	400
5SY4201-7	In Stock From $80^.14	Siemens	1	400
5SY4201-8	In Stock From $59^.69	Siemens	1	400
5SY4202-8	In Stock From $68^.91	Siemens	2	400
5SY4203-7	In Stock From $116^.94	Siemens	3	400
5SY4203-8	Limited Stock From Get Price	Siemens	3	400
5SY4204-5	In Stock From $60^.30	Siemens	4	400
5SY4204-8	In Stock From $29^.69	Siemens	4	400
5SY4205-7	In Stock From $91^.00	Siemens	5	400
5SY4206-8	In Stock From $89^.52	Siemens	6	400
5SY4208-8	In Stock From $115^.95	Siemens	8	400
5SY4210-6	In Stock From $47^.72	Siemens	10	400
5SY4211-7	In Stock From $91^.00	Siemens	11	400
5SY4213-6	Limited Stock From Get Price	Siemens	13	400
5SY4213-7	In Stock From $68^.00	Siemens	13	400
5SY4214-8	In Stock From $32^.01	Siemens	14	400
5SY4215-7	In Stock From $91^.00	Siemens	15	400
5SY4215-8	In Stock From $99^.32	Siemens	15	400
5SY4216-6	In Stock From $49^.64	Siemens	16	400

1
...
273
274
275
...
1,176

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.