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
MXD63B800H	In Stock From $2,893^.43	Siemens	800	600
MXD63S800AL	In Stock From $10,393^.21	Siemens	800	600
ND62B100	In Stock From $3,840^.13	Siemens	1000	600
ND63B100	In Stock From $3,141^.15	Siemens	1000	600
ND63B100L	In Stock From $4,010^.87	Siemens	1000	600
ND63B120	In Stock From $2,858^.34	Siemens	1200	600
ND63B800	In Stock From $3,408^.99	Siemens	800	600
ND63B900	In Stock From $3,238^.26	Siemens	900	600
NDK3A060L	In Stock From $3,804^.75	Siemens	60	600
NDK3B070L	In Stock From $1,649^.33	Siemens	70	600
NDK3B125L	In Stock From $5,130^.00	Siemens	125	600
NDK3T100L	In Stock From $1,238^.76	Siemens	100	600
NDK3V060L	In Stock From $3,335^.64	Siemens	60	600
NDX3B100	In Stock From $2,159^.35	Siemens	100	600
NEB1B020B	In Stock From $96^.73	Siemens	20	277
NEB1B030	In Stock From $139^.13	Siemens	30	277
NEB1B030B	In Stock From $175^.59	Siemens	30	277
NEB1B040	In Stock From $184^.46	Siemens	40	277
NEB1B040B	In Stock From $184^.46	Siemens	40	277
NEB2B015B	In Stock From $208^.08	Siemens	15	600
NEB2B020	In Stock From $325^.62	Siemens	20	600
NEB2B020B	In Stock From $287^.93	Siemens	20	600
NEB2B040B	In Stock From $291^.05	Siemens	40	600
NEB2B070	In Stock From $295^.12	Siemens	70	600

1
...
114
115
116
...
1,178

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.