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
BU-ECA2010
BU-ECA2010
In Stock
From
$64.25
Fuji Electric
BU-ECA3030L
BU-ECA3030L
In Stock
From
$63.93
Fuji Electric
BU-ESB-3030-L
BU-ESB-3030-L
In Stock
From
$93.43
Fuji Electric
BU-ESB3015
BU-ESB3015
In Stock
From
$38.25
Fuji Electric
BU-ESB3020
BU-ESB3020
In Stock
From
$51.34
Fuji Electric
BU-ESB3050L
BU-ESB3050L
In Stock
From
$251.12
Fuji Electric
BU-ESB3060
BU-ESB3060
In Stock
From
$443.35
Fuji Electric
BU-ESB3070
BU-ESB3070
In Stock
From
$68.84
Fuji Electric
BU-ESB3080
BU-ESB3080
In Stock
From
$493.52
Fuji Electric
BU-ESB3080L
BU-ESB3080L
In Stock
From
$381.78
Fuji Electric
BU-FHA3150
BU-FHA3150
In Stock
From
$94.44
Fuji Electric
BU-FHB3030
BU-FHB3030
In Stock
From
$44.89
Fuji Electric
BU-FHB3150
BU-FHB3150
In Stock
From
$122.17
Fuji Electric
BU-FHB3150L
BU-FHB3150L
In Stock
From
$115.14
Fuji Electric
BU-FSB2020
BU-FSB2020
In Stock
From
$94.10
Fuji Electric
BU-FSB3030
BU-FSB3030
In Stock
From
$714.42
Fuji Electric
BU-FSB3060
BU-FSB3060
In Stock
From
$111.42
Fuji Electric
BU-FSB3100
BU-FSB3100
In Stock
From
$686.10
Fuji Electric
BU-FSB3100L
BU-FSB3100L
In Stock
From
$122.72
Fuji Electric
BU-GDA3225
BU-GDA3225
In Stock
From
$128.68
Fuji Electric
BU-JHB3150L
BU-JHB3150L
In Stock
From
$1,151.41
Fuji Electric
BU-JSA-3125L
BU-JSA-3125L
In Stock
From
$297.96
Fuji Electric
BU-JSB3225
BU-JSB3225
In Stock
From
$820.34
Fuji Electric
BU-KSA3250
BU-KSA3250
In Stock
From
$628.42
Fuji 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.