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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
3WN6-521-0JB18-3KA1-Z	Limited Stock From Get Price	Siemens	-	-
3ZX1012-0RV01-1AA1	Limited Stock From Get Price	Siemens	-	-
5SG7-150	Limited Stock From Get Price	Siemens	-	-
5SG7-161	Limited Stock From Get Price	Siemens	-	-
5SG7713	Limited Stock From Get Price	Siemens	-	-
5SL6504-7	Limited Stock From Get Price	Siemens	4	400
5SN1-SP-320A	Limited Stock From Get Price	Siemens	20	-
5SN2320	Limited Stock From Get Price	Siemens	-	-
5SN3-NG-6A	Limited Stock From Get Price	Siemens	-	-
5SN3302-8F	Limited Stock From Get Price	Siemens	-	-
5SN3350-8F	Limited Stock From Get Price	Siemens	-	-
5SN7110-0	Limited Stock From Get Price	Siemens	10	415
5SN9-G6A	Limited Stock From Get Price	Siemens	6	415
C4556	Limited Stock From Get Price	Siemens	-	-
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HHJD63B400NLNAV	Limited Stock From Get Price	Siemens	-	-
LFK3V250	Limited Stock From Get Price	Siemens	-	-
NFK3B100L	Limited Stock From Get Price	Siemens	100	600
U12JLD6	Limited Stock From Get Price	Siemens	-	-
3RV1131-4DA10	Limited Stock From Get Price	Siemens	-	-
3RV1923-1DA01	Limited Stock From Get Price	Siemens	-	-
3RV2311-1GC20	Limited Stock From Get Price	Siemens	-	-
3VA9988-0BL30	Limited Stock From Get Price	Siemens	-	-

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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.