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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
BU-ECA-3100
BU-ECA-3100
In Stock
From
$315.17
Fuji Electric
100
240
BU-ESB2015
BU-ESB2015
In Stock
From
$19.62
Fuji Electric
15
600
BU-ECA-3050
BU-ECA-3050
In Stock
From
$57.67
Fuji Electric
50
240
BU-ECA-3060
BU-ECA-3060
In Stock
From
$118.39
Fuji Electric
60
240
BU-ECA2015
BU-ECA2015
In Stock
From
$19.26
Fuji Electric
15
240
BU-ECA3070
BU-ECA3070
In Stock
From
$66.36
Fuji Electric
70
240
BU-ESB3040
BU-ESB3040
In Stock
From
$51.42
Fuji Electric
40
600
BU-ESA2015
BU-ESA2015
In Stock
From
$37.52
Fuji Electric
15
480
BU-ECA-3020
BU-ECA-3020
In Stock
From
$21.02
Fuji Electric
20
240
BU-ECA-2030
BU-ECA-2030
In Stock
From
$59.80
Fuji Electric
30
240
BU-ECA2050
BU-ECA2050
In Stock
From
$34.91
Fuji Electric
50
240
BU-ECA3030
BU-ECA3030
In Stock
From
$230.28
Fuji Electric
30
240
BU-JSB3250
BU-JSB3250
In Stock
From
$179.70
Fuji Electric
250
600
BB2ASB-005
BB2ASB-005
In Stock
From
$23.01
Fuji Electric
-
-
BW100EAG-3P100
BW100EAG-3P100
In Stock
From
$326.47
Fuji Electric
-
-
BW100EAGU-3P075
BW100EAGU-3P075
In Stock
From
$228.65
Fuji Electric
-
-
BW100EAGU-3P080
BW100EAGU-3P080
In Stock
From
$234.02
Fuji Electric
-
-
BW100EAGU-3P100
BW100EAGU-3P100
In Stock
From
$213.40
Fuji Electric
-
-
BW125JAG-3P015
BW125JAG-3P015
In Stock
From
$60.14
Fuji Electric
-
-
BW125JAGU-3P015
BW125JAGU-3P015
In Stock
From
$341.27
Fuji Electric
-
-
BW125JAGU-3P060
BW125JAGU-3P060
In Stock
From
$297.09
Fuji Electric
-
-
BW125JAGU-3P075
BW125JAGU-3P075
In Stock
From
$596.67
Fuji Electric
-
-
BW125JAGU-3P100
BW125JAGU-3P100
In Stock
From
$597.09
Fuji Electric
-
-
BW32SAG-3P030
BW32SAG-3P030
In Stock
From
$165.64
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.