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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
SG53B/20-30MA
SG53B/20-30MA
In Stock
From
$376.79
Fuji Electric
-
-
SG53RCUL 20
SG53RCUL 20
In Stock
From
$512.41
Fuji Electric
-
-
SG53RCUL 30K
SG53RCUL 30K
In Stock
From
$402.40
Fuji Electric
-
-
BU-ESA3015
BU-ESA3015
In Stock
From
$221.76
Fuji Electric
-
-
BW32AAG-2P020
BW32AAG-2P020
In Stock
From
$75.41
Fuji Electric
-
-
BW63EAG-3P060
BW63EAG-3P060
In Stock
From
$201.17
Fuji Electric
-
-
EW50RAGU-3P040B
EW50RAGU-3P040B
In Stock
From
$788.55
Fuji Electric
-
-
SA203H-150A
SA203H-150A
In Stock
From
$116.65
Fuji Electric
-
-
BU-ESA3060
BU-ESA3060
In Stock
From
$83.95
Fuji Electric
-
-
BU-ESA3080
BU-ESA3080
In Stock
From
$136.06
Fuji Electric
-
-
BU-ESA3100
BU-ESA3100
In Stock
From
$283.06
Fuji Electric
-
-
BUESA2030
BUESA2030
In Stock
From
Get Price
Fuji Electric
30
480
BU-ESB3030
BU-ESB3030
In Stock
From
$136.07
Fuji Electric
-
-
BU-ESB3100
BU-ESB3100
In Stock
From
$91.04
Fuji Electric
-
-
SA33B
SA33B
In Stock
From
$73.43
Fuji Electric
-
-
BU-FSB3125
BU-FSB3125
In Stock
From
$1,158.37
Fuji Electric
-
-
BW125RAGU-3P050
BW125RAGU-3P050
In Stock
From
$991.27
Fuji Electric
-
-
CP31/10X
CP31/10X
In Stock
From
$20.05
Fuji Electric
-
-
CP31D/10
CP31D/10
In Stock
From
$14.41
Fuji Electric
-
-
CP31E/10
CP31E/10
In Stock
From
$11.34
Fuji Electric
-
-
CP31E/5W
CP31E/5W
In Stock
From
$18.67
Fuji Electric
-
-
CP31EM/2WDC
CP31EM/2WDC
In Stock
From
$13.49
Fuji Electric
-
-
CP31FI/1W
CP31FI/1W
In Stock
From
$44.15
Fuji Electric
-
-
CP31FM/10
CP31FM/10
In Stock
From
$18.67
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.