1. Home / 
  2. All Categories / 
  3. Circuit Breaker / 
  4. Molded Case Circuit Breaker

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
5SJ6101-7SC
5SJ6101-7SC
Limited Stock
From
Get Price
Siemens
1
400
5SJ6103-7SC
5SJ6103-7SC
Limited Stock
From
Get Price
Siemens
3
400
5SJ6104-7SC
5SJ6104-7SC
Limited Stock
From
Get Price
Siemens
4
400
5SJ6115-7
5SJ6115-7
Limited Stock
From
Get Price
Siemens
-
-
5SJ6125-7SC
5SJ6125-7SC
Limited Stock
From
Get Price
Siemens
25
400
5SJ6140-7SC
5SJ6140-7SC
Limited Stock
From
Get Price
Siemens
40
400
5SJ6150-7SC
5SJ6150-7SC
Limited Stock
From
Get Price
Siemens
50
400
5SJ6163-7SC
5SJ6163-7SC
Limited Stock
From
Get Price
Siemens
63
400
5SJ6201-7SC
5SJ6201-7SC
Limited Stock
From
Get Price
Siemens
1
400
5SJ6203-7SC
5SJ6203-7SC
Limited Stock
From
Get Price
Siemens
3
400
5SJ6204-7SC
5SJ6204-7SC
Limited Stock
From
Get Price
Siemens
4
400
5SJ6225-7SC
5SJ6225-7SC
Limited Stock
From
Get Price
Siemens
25
400
5SJ6250-7SC
5SJ6250-7SC
Limited Stock
From
Get Price
Siemens
50
400
5SJ6263-7SC
5SJ6263-7SC
Limited Stock
From
Get Price
Siemens
63
400
5SJ6301-7SC
5SJ6301-7SC
Limited Stock
From
Get Price
Siemens
1
400
5SJ6302-7SC
5SJ6302-7SC
Limited Stock
From
Get Price
Siemens
2
400
5SJ6303-7SC
5SJ6303-7SC
Limited Stock
From
Get Price
Siemens
3
400
5SJ6304-7SC
5SJ6304-7SC
Limited Stock
From
Get Price
Siemens
4
400
5SJ6306-7SC
5SJ6306-7SC
Limited Stock
From
Get Price
Siemens
6
400
5SJ6310-7SC
5SJ6310-7SC
Limited Stock
From
Get Price
Siemens
10
400
5SJ6316-7SC
5SJ6316-7SC
Limited Stock
From
Get Price
Siemens
16
400
5SJ6332-7SC
5SJ6332-7SC
Limited Stock
From
Get Price
Siemens
32
400
5SJ6363-7SC
5SJ6363-7SC
Limited Stock
From
Get Price
Siemens
63
400
5SU1654-6KK16
5SU1654-6KK16
Limited Stock
From
Get Price
Siemens
16
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.