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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
LAB3400WSK
LAB3400WSK
In Stock
From
$1,172.44
Westinghouse
400
600
LAB3600K
LAB3600K
In Stock
From
$1,224.03
Westinghouse
600
600
LAB3600WK
LAB3600WK
In Stock
From
$1,205.20
Westinghouse
600
600
LAB3600WSK
LAB3600WSK
In Stock
From
$1,233.53
Westinghouse
600
600
LAB3700MW
LAB3700MW
In Stock
From
$1,822.20
Westinghouse
400
600
LAB3700SMW
LAB3700SMW
In Stock
From
$1,822.20
Westinghouse
400
600
LB3125
LB3125
In Stock
From
$425.50
Eaton
125
600
LB3150
LB3150
In Stock
From
$783.97
Westinghouse
150
600
LB3250
LB3250
In Stock
From
$521.58
Westinghouse
250
600
LBB3300
LBB3300
In Stock
From
$621.83
Cutler Hammer
300
600
LBB3300W
LBB3300W
In Stock
From
$1,536.44
Westinghouse
300
600
LBB3400S
LBB3400S
In Stock
From
$1,984.06
Westinghouse
400
600
LC2150F
LC2150F
In Stock
From
$805.96
Westinghouse
150
600
LC2150FM
LC2150FM
In Stock
From
$805.96
Westinghouse
150
600
LC2300F
LC2300F
In Stock
From
$834.62
Westinghouse
300
600
LC2300FM
LC2300FM
In Stock
From
$834.62
Westinghouse
300
600
LC2400FM
LC2400FM
In Stock
From
Get Price
Westinghouse
400
600
LC2600F
LC2600F
In Stock
From
$442.52
Westinghouse
600
600
LC2600FM
LC2600FM
In Stock
From
$727.62
Westinghouse
600
600
LC2600WK
LC2600WK
In Stock
From
$727.62
Westinghouse
600
600
LC2600WSK
LC2600WSK
In Stock
From
$727.62
Westinghouse
600
600
LC3075
LC3075
In Stock
From
$1,439.38
Westinghouse
75
600
LC3090
LC3090
In Stock
From
$1,422.46
Westinghouse
90
600
LC3100
LC3100
In Stock
From
$82.20
Westinghouse
100
600
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.