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
MG26511
MG26511
Limited Stock
From
Get Price
Schneider Electric
-
-
MG26660
MG26660
Limited Stock
From
Get Price
Schneider Electric
-
-
MG27298
MG27298
Limited Stock
From
Get Price
Schneider Electric
-
-
MG27911
MG27911
Limited Stock
From
Get Price
Schneider Electric
-
-
MGN22024
MGN22024
Limited Stock
From
Get Price
Schneider Electric
6
250
MP3100KHAS
MP3100KHAS
Limited Stock
From
Get Price
Murray Corporation
100
240
MP3100KHF
MP3100KHF
Limited Stock
From
Get Price
Murray Corporation
100
240
MP3100KHM
MP3100KHM
Limited Stock
From
Get Price
Murray Corporation
100
240
MP3100KHST
MP3100KHST
Limited Stock
From
Get Price
Murray Corporation
100
240
MP3100KHST24V
MP3100KHST24V
Limited Stock
From
Get Price
Murray Corporation
100
240
MP3100KHY
MP3100KHY
Limited Stock
From
Get Price
Murray Corporation
100
240
MP3100KMAS
MP3100KMAS
Limited Stock
From
Get Price
Murray Corporation
100
240
MP3100KMF
MP3100KMF
Limited Stock
From
Get Price
Murray Corporation
100
240
MP3100KMM
MP3100KMM
Limited Stock
From
Get Price
Murray Corporation
100
240
MP3100KMST24V
MP3100KMST24V
Limited Stock
From
Get Price
Murray Corporation
100
240
MP3100KMY
MP3100KMY
Limited Stock
From
Get Price
Murray Corporation
100
240
MP320KHAS
MP320KHAS
Limited Stock
From
Get Price
Murray Corporation
20
240
MP320KHF
MP320KHF
Limited Stock
From
Get Price
Murray Corporation
20
240
MP320KHM
MP320KHM
Limited Stock
From
Get Price
Murray Corporation
20
240
MP320KHST
MP320KHST
Limited Stock
From
Get Price
Murray Corporation
20
240
MP320KHST24V
MP320KHST24V
Limited Stock
From
Get Price
Murray Corporation
20
240
MP320KHY
MP320KHY
Limited Stock
From
Get Price
Murray Corporation
20
240
MP320KMAS
MP320KMAS
Limited Stock
From
Get Price
Murray Corporation
20
240
MP320KMF
MP320KMF
Limited Stock
From
Get Price
Murray Corporation
20
240
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.