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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
NLK3B600L	In Stock From $2,664^.79	Siemens	600	600
NMG3F800	In Stock From $868^.74	Siemens	800	600
NMX3B700	In Stock From $15,123^.99	Siemens	700	600
NMX3B800	In Stock From $2,639^.91	Siemens	800	600
NMX3B800L	In Stock From $4,069^.94	Siemens	800	600
NMX3R800	Limited Stock From Get Price	Siemens	800	600
NNG3F120	In Stock From $6,200^.83	Siemens	1200	600
NNX3B120	In Stock From $3,712^.56	Siemens	1200	600
NPG3F160	In Stock From $15,113^.51	Siemens	1600	600
P220	In Stock From $64^.76	ITE	20	240
P230	In Stock From $60^.70	ITE	30	240
P270	In Stock From $192^.81	Siemens	70	240
PXD63B140	In Stock From $4,315^.93	Siemens	1400	600
PXD63B160	In Stock From $5,148^.08	Siemens	1600	600
Q115H	In Stock From $23^.69	Siemens	15	120
Q120	In Stock From $7^.33	Siemens	20	120
Q120DFN	In Stock From $38^.02	Siemens	20	240
Q125	In Stock From $5^.71	Siemens	25	120
Q140	In Stock From $5^.69	Siemens	40	120
Q145	In Stock From $9^.55	Siemens	45	120
Q150	In Stock From $6^.36	Siemens	50	120
Q1515	In Stock From $17^.65	Siemens	15	240
Q1515NC	In Stock From $9^.11	Siemens	15	240
Q1520NC	In Stock From $9^.90	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.