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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
THJK426225
THJK426225
In Stock
From
$685.81
General Electric
225
600
THJK426225LL
THJK426225LL
In Stock
From
$1,557.47
General Electric
225
600
THJK426225WL
THJK426225WL
In Stock
From
$1,557.47
General Electric
225
600
THJK426250WL
THJK426250WL
In Stock
From
$993.94
General Electric
250
600
THJK426300
THJK426300
In Stock
From
$1,446.37
General Electric
300
600
THJK426300LL
THJK426300LL
In Stock
From
$1,412.50
General Electric
300
600
THJK426350
THJK426350
In Stock
From
$1,302.54
General Electric
350
600
THJK426350LL
THJK426350LL
In Stock
From
$1,391.28
General Electric
350
600
THJK426350WL
THJK426350WL
In Stock
From
$1,322.52
General Electric
350
600
THJK426400
THJK426400
In Stock
From
$1,862.22
General Electric
400
600
THJK426400LL
THJK426400LL
In Stock
From
$1,862.22
General Electric
400
600
THJK426400WL
THJK426400WL
In Stock
From
$1,862.22
General Electric
400
600
THJK436125
THJK436125
In Stock
From
$1,124.98
General Electric
125
600
THJK436125LL
THJK436125LL
In Stock
From
$1,651.45
General Electric
125
600
THJK436150LL
THJK436150LL
In Stock
From
$1,641.16
General Electric
150
600
THJK436150WL
THJK436150WL
In Stock
From
$1,641.16
General Electric
150
600
THJK436175
THJK436175
In Stock
From
$973.69
General Electric
175
600
THJK436175LL
THJK436175LL
In Stock
From
$2,072.33
General Electric
175
600
THJK436175WL
THJK436175WL
In Stock
From
$2,072.33
General Electric
175
600
THJK436200LL
THJK436200LL
In Stock
From
$1,743.68
General Electric
200
600
THJK436225LL
THJK436225LL
In Stock
From
$1,725.98
General Electric
225
600
THJK436225WL
THJK436225WL
In Stock
From
$2,138.90
General Electric
225
600
THJK436250LL
THJK436250LL
In Stock
From
$1,608.76
General Electric
250
600
THJK436300LL
THJK436300LL
In Stock
From
$1,962.04
General Electric
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.