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Molded Case Circuit Breaker

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Molded Case Circuit Breaker

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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.

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Part Number	PRICE	Manufacturer	Amperage	Voltage
NMY3B600	In Stock From $17,553^.42	Siemens	600	600
NMY3B600L	In Stock From $20,346^.67	Siemens	600	600
NNX2B120	In Stock From $7,089^.28	Siemens	1200	600
NNX3B100	In Stock From $4,964^.53	Siemens	1000	600
NNX3B800	In Stock From $7,397^.98	Siemens	800	600
NNX3B900	In Stock From $4,010^.88	Siemens	900	600
NPG3B160	In Stock From $9,364^.90	Siemens	1600	600
NPY3B160	In Stock From $22,845^.67	Siemens	1600	600
NXD63S120A	In Stock From $3,346^.01	Siemens	1200	600
PXD63S160A	In Stock From $3,435^.84	Siemens	1600	600
Q130H	In Stock From $16^.27	Siemens	30	120
Q135	In Stock From $5^.59	Siemens	35	120
Q140H	In Stock From $20^.26	Siemens	40	120
Q1520	In Stock From $21^.34	Siemens	20	240
Q160H	In Stock From $28^.72	Siemens	60	120
Q170	In Stock From $20^.93	Siemens	70	120
Q170H	In Stock From $96^.02	Siemens	70	120
Q2020AFC	In Stock From $89^.38	Siemens	20	240
Q2030	In Stock From $34^.14	Siemens	30	240
Q2125HH	In Stock From $208^.73	Siemens	125	240
Q21540CTNC	In Stock From $47^.83	Siemens	40	240
Q215AFCH	In Stock From $324^.62	Siemens	15	240
Q22000S01	In Stock From $150^.97	Siemens	20	240
Q22015CT	In Stock From $71^.76	Siemens	20	240

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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.