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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
SA53RCUL/30
SA53RCUL/30
In Stock
From
$356.17
Fuji Electric
-
-
SG53B-30A
SG53B-30A
In Stock
From
$425.35
Fuji Electric
-
-
SG53C-20A
SG53C-20A
In Stock
From
$54.37
Fuji Electric
-
-
SG53RCUL-50
SG53RCUL-50
In Stock
From
$409.18
Fuji Electric
-
-
SG53RCUL/30-CO
SG53RCUL/30-CO
In Stock
From
$462.33
Fuji Electric
-
-
BU-ECA-2020
BU-ECA-2020
In Stock
From
$49.29
Fuji Electric
20
240
BU-ESA2030L
BU-ESA2030L
In Stock
From
$98.95
Fuji Electric
-
-
BU-ESA3040
BU-ESA3040
In Stock
From
$58.34
Fuji Electric
-
-
BU-ESA3040L
BU-ESA3040L
In Stock
From
$185.44
Fuji Electric
-
-
BU-ESA3050L
BU-ESA3050L
In Stock
From
$117.94
Fuji Electric
-
-
BU-LSB3F600
BU-LSB3F600
In Stock
From
$2,312.40
Fuji Electric
600
600
BU-ECA3010
BU-ECA3010
In Stock
From
$28.12
Fuji Electric
-
-
BU-ESB3050
BU-ESB3050
In Stock
From
$48.12
Fuji Electric
-
-
BB2AEAC-003
BB2AEAC-003
In Stock
From
$69.57
Fuji Electric
-
-
BB2ASB-003
BB2ASB-003
In Stock
From
$15.02
Fuji Electric
-
-
BB3AEA-010
BB3AEA-010
In Stock
From
$95.22
Fuji Electric
-
-
BB3AEA-030
BB3AEA-030
In Stock
From
$97.95
Fuji Electric
-
-
BB3AEAC-030
BB3AEAC-030
In Stock
From
$105.20
Fuji Electric
-
-
BB3ASB-003
BB3ASB-003
In Stock
From
$67.67
Fuji Electric
-
-
BB3BEA-050
BB3BEA-050
In Stock
From
$47.84
Fuji Electric
-
-
BB3BEBUL-050
BB3BEBUL-050
In Stock
From
$97.72
Fuji Electric
-
-
BB3BSC-030
BB3BSC-030
In Stock
From
$59.52
Fuji Electric
-
-
BU-ECA-2005
BU-ECA-2005
In Stock
From
$25.22
Fuji Electric
-
-
BU-ECA-2005L
BU-ECA-2005L
In Stock
From
$70.65
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.