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
MG7024
MG7024
Limited Stock
From
Get Price
Schneider Electric
MG7026
MG7026
Limited Stock
From
Get Price
Schneider Electric
MG7034
MG7034
Limited Stock
From
Get Price
Schneider Electric
MG8325
MG8325
Limited Stock
From
Get Price
Schneider Electric
MG8429
MG8429
Limited Stock
From
Get Price
Schneider Electric
MGA9N21780
MGA9N21780
In Stock
From
$31.85
Schneider Electric
MGE1004X
MGE1004X
Limited Stock
From
Get Price
Schneider Electric
MGE1254EC
MGE1254EC
Limited Stock
From
Get Price
Schneider Electric
MGN19765
MGN19765
Limited Stock
From
Get Price
Schneider Electric
MGN61502
MGN61502
In Stock
From
$98.77
Schneider Electric
MGN61503
MGN61503
In Stock
From
$16.92
Schneider Electric
MGN61505
MGN61505
In Stock
From
$168.05
Schneider Electric
MGN61506
MGN61506
In Stock
From
$113.50
Schneider Electric
MGN61508
MGN61508
In Stock
From
$41.32
Schneider Electric
MGN61512
MGN61512
In Stock
From
$127.77
Schneider Electric
MGN61521
MGN61521
In Stock
From
$321.27
Schneider Electric
MGN61522
MGN61522
In Stock
From
$172.84
Schneider Electric
MGN61531
MGN61531
In Stock
From
$145.53
Schneider Electric
MGN61532
MGN61532
Limited Stock
From
Get Price
Schneider Electric
MGN61537
MGN61537
In Stock
From
$211.78
Schneider Electric
MGN61837
MGN61837
Limited Stock
From
Get Price
Schneider Electric
MGN61858
MGN61858
Limited Stock
From
Get Price
Schneider Electric
MGN61859
MGN61859
Limited Stock
From
Get Price
Schneider Electric
MGN61871
MGN61871
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.