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
A9N17521
A9N17521
Limited Stock
From
Get Price
Schneider Electric
A9N18361
A9N18361
Limited Stock
From
Get Price
Schneider Electric
A9N18373
A9N18373
In Stock
From
$201.74
Schneider Electric
A9N18384
A9N18384
Limited Stock
From
Get Price
Schneider Electric
A9N18388
A9N18388
In Stock
From
$111.70
Schneider Electric
A9N18392
A9N18392
Limited Stock
From
Get Price
Schneider Electric
A9N18447
A9N18447
Limited Stock
From
Get Price
Schneider Electric
A9N21021
A9N21021
Limited Stock
From
Get Price
Schneider Electric
A9N21024
A9N21024
Limited Stock
From
Get Price
Schneider Electric
A9N21025
A9N21025
Limited Stock
From
Get Price
Schneider Electric
A9N21045
A9N21045
Limited Stock
From
Get Price
Schneider Electric
A9N21055
A9N21055
Limited Stock
From
Get Price
Schneider Electric
A9N21365
A9N21365
Limited Stock
From
Get Price
Schneider Electric
A9N21442
A9N21442
Limited Stock
From
Get Price
Schneider Electric
A9N21596
A9N21596
Limited Stock
From
Get Price
Schneider Electric
A9N21599
A9N21599
Limited Stock
From
Get Price
Schneider Electric
A9N21645
A9N21645
Limited Stock
From
Get Price
Schneider Electric
A9N61501
A9N61501
In Stock
From
$13.72
Schneider Electric
A9N61502
A9N61502
In Stock
From
$23.22
Schneider Electric
A9N61518
A9N61518
Limited Stock
From
Get Price
Schneider Electric
A9N61521
A9N61521
Limited Stock
From
Get Price
Schneider Electric
A9N61524
A9N61524
Limited Stock
From
Get Price
Schneider Electric
A9N61535
A9N61535
Limited Stock
From
Get Price
Schneider Electric
A9N61650
A9N61650
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.