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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
5SJ6132-7SC
5SJ6132-7SC
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Siemens
32
400
5SJ6140-7SC
5SJ6140-7SC
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Siemens
40
400
5SJ6150-7SC
5SJ6150-7SC
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Siemens
50
400
5SJ6163-7SC
5SJ6163-7SC
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Siemens
63
400
5SJ6201-7SC
5SJ6201-7SC
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Siemens
1
400
5SJ6203-7SC
5SJ6203-7SC
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Siemens
3
400
5SJ6210-7SC
5SJ6210-7SC
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Siemens
10
400
5SJ6225-7SC
5SJ6225-7SC
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Siemens
25
400
5SJ6240-7SC
5SJ6240-7SC
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Siemens
40
400
5SJ6250-7SC
5SJ6250-7SC
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Siemens
50
400
5SJ6263-7SC
5SJ6263-7SC
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Siemens
63
400
5SJ6302-7SC
5SJ6302-7SC
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Siemens
2
400
5SJ6303-7SC
5SJ6303-7SC
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Siemens
3
400
5SJ6310-7SC
5SJ6310-7SC
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Siemens
10
400
5SV3446-6
5SV3446-6
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Siemens
46
400
5SX1G4A
5SX1G4A
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Siemens
4
400
5SX2 5SX22
5SX2 5SX22
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Siemens
22
400
5SX21-A4
5SX21-A4
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Siemens
4
277
5SX21-C10
5SX21-C10
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Siemens
10
400
5SX2101-5
5SX2101-5
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Siemens
1
400
5SX2102-7-R
5SX2102-7-R
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Siemens
2
400
5SX2150-8
5SX2150-8
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Siemens
50
400
5SX22-C50
5SX22-C50
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Siemens
50
400
5SX2205-6
5SX2205-6
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Siemens
6
400
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.