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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
KB3250SK
KB3250SK
In Stock
From
$300.30
Westinghouse
250
600
KB3250WK
KB3250WK
In Stock
From
$300.30
Westinghouse
250
600
KB3250WSK
KB3250WSK
In Stock
From
$795.20
Westinghouse
250
600
KD2400
KD2400
In Stock
From
$854.49
Eaton
400
600
KDB2125
KDB2125
In Stock
From
$510.00
Cutler Hammer
125
600
LA2070PR
LA2070PR
In Stock
From
$782.79
Westinghouse
70
600
LA2070S
LA2070S
In Stock
From
$604.45
Westinghouse
70
600
LA2090
LA2090
In Stock
From
$564.41
Westinghouse
90
600
LA2090PR
LA2090PR
In Stock
From
$754.79
Westinghouse
90
600
LA2090S
LA2090S
In Stock
From
$718.21
Westinghouse
90
600
LA2100
LA2100
In Stock
From
$1,284.52
Westinghouse
100
600
LA2100PR
LA2100PR
In Stock
From
$709.56
Westinghouse
100
600
LA2100S
LA2100S
In Stock
From
$1,284.52
Westinghouse
100
600
LA2125
LA2125
In Stock
From
$582.10
Westinghouse
125
600
LA2125PR
LA2125PR
In Stock
From
$257.68
Westinghouse
125
600
LA2125S
LA2125S
In Stock
From
$698.52
Westinghouse
125
600
LA2150PR
LA2150PR
In Stock
From
$741.85
Westinghouse
150
600
LA2150S
LA2150S
In Stock
From
$515.82
Westinghouse
150
600
LA2175PR
LA2175PR
In Stock
From
$750.25
Westinghouse
175
600
LA2175S
LA2175S
In Stock
From
$509.50
Westinghouse
175
600
LA2200PR
LA2200PR
In Stock
From
$690.33
Westinghouse
200
600
LA2200S
LA2200S
In Stock
From
$289.38
Westinghouse
200
600
LA2225PR
LA2225PR
In Stock
From
$2,911.27
Westinghouse
225
600
LA2225S
LA2225S
In Stock
From
$567.25
Westinghouse
225
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.