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
MG29851
MG29851
Limited Stock
From
Get Price
Schneider Electric
MG30403
MG30403
Limited Stock
From
Get Price
Schneider Electric
MG30409
MG30409
Limited Stock
From
Get Price
Schneider Electric
MG30629
MG30629
Limited Stock
From
Get Price
Schneider Electric
MG30630
MG30630
Limited Stock
From
Get Price
Schneider Electric
MG30640
MG30640
Limited Stock
From
Get Price
Schneider Electric
MG30670
MG30670
Limited Stock
From
Get Price
Schneider Electric
MG30683
MG30683
Limited Stock
From
Get Price
Schneider Electric
MG30930
MG30930
Limited Stock
From
Get Price
Schneider Electric
MG31115
MG31115
Limited Stock
From
Get Price
Schneider Electric
MG31130
MG31130
Limited Stock
From
Get Price
Schneider Electric
MG31670
MG31670
Limited Stock
From
Get Price
Schneider Electric
MG31671
MG31671
Limited Stock
From
Get Price
Schneider Electric
MG31780
MG31780
Limited Stock
From
Get Price
Schneider Electric
MG32517
MG32517
Limited Stock
From
Get Price
Schneider Electric
MG32696
MG32696
Limited Stock
From
Get Price
Schneider Electric
MG32894
MG32894
Limited Stock
From
Get Price
Schneider Electric
MG33333
MG33333
Limited Stock
From
Get Price
Schneider Electric
MG34711
MG34711
Limited Stock
From
Get Price
Schneider Electric
MG34712
MG34712
Limited Stock
From
Get Price
Schneider Electric
MG37393
MG37393
Limited Stock
From
Get Price
Schneider Electric
MG37644
MG37644
Limited Stock
From
Get Price
Schneider Electric
MG38817
MG38817
Limited Stock
From
Get Price
Schneider Electric
MG38877
MG38877
Limited Stock
From
Get Price
Schneider Electric
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.