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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
J3200L
J3200L
In Stock
From
$689.38
Westinghouse
200
600
J3225
J3225
In Stock
From
$753.17
Westinghouse
225
600
J3225L
J3225L
In Stock
From
$722.00
Westinghouse
225
600
JKL3200
JKL3200
In Stock
From
$511.46
Westinghouse
200
600
K2070
K2070
In Stock
From
$472.96
Westinghouse
70
600
K2070L
K2070L
In Stock
From
$698.10
Westinghouse
70
600
K2090
K2090
In Stock
From
$475.72
Westinghouse
90
600
K2090L
K2090L
In Stock
From
$696.31
Westinghouse
90
600
K2100
K2100
In Stock
From
$269.36
Westinghouse
100
600
K2100L
K2100L
In Stock
From
$783.94
Westinghouse
100
600
K2125
K2125
In Stock
From
$225.47
Westinghouse
125
600
K2125L
K2125L
In Stock
From
$32.75
Westinghouse
125
600
K2150
K2150
In Stock
From
$391.02
Westinghouse
150
600
K2150L
K2150L
In Stock
From
$624.10
Westinghouse
150
600
K2175
K2175
In Stock
From
$220.68
Westinghouse
175
600
K2175L
K2175L
In Stock
From
$371.21
Westinghouse
175
600
K2200
K2200
In Stock
From
$339.25
Westinghouse
200
600
K2200L
K2200L
In Stock
From
$597.08
Westinghouse
200
600
K2225
K2225
In Stock
From
$170.34
Westinghouse
225
600
K2225L
K2225L
In Stock
From
$786.32
Westinghouse
225
600
K3070
K3070
In Stock
From
$526.50
Westinghouse
70
600
K3070L
K3070L
In Stock
From
$779.36
Westinghouse
70
600
K3090
K3090
In Stock
From
$421.20
Westinghouse
90
600
K3090L
K3090L
In Stock
From
$902.86
Westinghouse
90
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.