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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
LB3350S
LB3350S
In Stock
From
Get Price
Westinghouse
350
600
LB3400K
LB3400K
In Stock
From
$1,822.20
Westinghouse
400
600
LB3400N
LB3400N
In Stock
From
$1,116.38
Westinghouse
400
600
LB3400S
LB3400S
In Stock
From
$1,822.20
Westinghouse
400
600
LB3400SK
LB3400SK
In Stock
From
$1,822.20
Westinghouse
400
600
LB3400WK
LB3400WK
In Stock
From
$167.96
Westinghouse
400
600
LB3400WSK
LB3400WSK
In Stock
From
$1,338.08
Westinghouse
400
600
LBB2200W
LBB2200W
In Stock
From
$858.81
Westinghouse
200
600
LBB2300
LBB2300
In Stock
From
$695.52
Westinghouse
300
600
LBB2300W
LBB2300W
In Stock
From
$1,251.53
Cutler Hammer
300
600
LBB3125W
LBB3125W
In Stock
From
$124.21
Westinghouse
125
600
LBB3225W
LBB3225W
In Stock
From
$19.43
Westinghouse
225
600
LBB3250
LBB3250
In Stock
From
$588.06
Westinghouse
250
600
LBB3350
LBB3350
In Stock
From
$498.66
Westinghouse
350
600
LBB3350S
LBB3350S
In Stock
From
$13.49
Westinghouse
350
600
LBB3350W
LBB3350W
In Stock
From
$96.00
Westinghouse
350
600
LBB3400NW
LBB3400NW
In Stock
From
$485.91
Westinghouse
400
600
LC3275
LC3275
In Stock
From
$473.82
Westinghouse
275
600
LCA2150F
LCA2150F
In Stock
From
$805.96
Westinghouse
150
600
LCA2300F
LCA2300F
In Stock
From
$834.62
Westinghouse
300
600
LCA2400F
LCA2400F
In Stock
From
Get Price
Westinghouse
400
600
LCA2600F
LCA2600F
In Stock
From
$727.62
Westinghouse
600
600
LCA3150F
LCA3150F
In Stock
From
$1,030.46
Westinghouse
150
600
LCA3300F
LCA3300F
In Stock
From
$557.26
Westinghouse
300
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.