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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
JGS325033G
JGS325033G
In Stock
From
$1,153.49
Eaton
250
600
JGS3250FAG
JGS3250FAG
In Stock
From
$2,224.54
Cutler Hammer
250
600
JGS3250FAGC
JGS3250FAGC
In Stock
From
$890.87
Cutler Hammer
250
600
JGS3250NN
JGS3250NN
In Stock
From
$1,113.33
Cutler Hammer
250
600
JJA36200SA
JJA36200SA
In Stock
From
$3,562.19
Square D
200
600
JJA36225SA
JJA36225SA
In Stock
From
$854.62
Square D
225
600
JJA36225YP
JJA36225YP
In Stock
From
$3,502.85
Square D
225
600
JJA36250U43X
JJA36250U43X
In Stock
From
$2,769.86
Square D
250
600
JJA36250U44X
JJA36250U44X
In Stock
From
$2,924.00
Square D
250
600
JJL36150T
JJL36150T
In Stock
From
$1,947.95
Square D
150
600
JLA36150
JLA36150
In Stock
From
$4,242.78
Square D
150
600
JRA36150
JRA36150
In Stock
From
$7,449.76
Square D
150
600
JRA36175
JRA36175
In Stock
From
$6,360.18
Square D
175
600
JRA36225
JRA36225
In Stock
From
$4,257.69
Schneider Electric
225
600
JXD63B350L
JXD63B350L
In Stock
From
$7,467.96
Siemens
350
600
KC34250
KC34250
In Stock
From
$1,950.91
Square D
250
480
KD3175W
KD3175W
In Stock
From
$989.08
Eaton
175
600
KD3200W
KD3200W
In Stock
From
$1,868.69
Westinghouse
200
600
KD3225W
KD3225W
In Stock
From
$1,957.36
Westinghouse
225
600
KD3225X
KD3225X
In Stock
From
$1,530.92
Westinghouse
225
600
KD3250V
KD3250V
In Stock
From
$2,877.88
Eaton
250
600
KD3250W
KD3250W
In Stock
From
$1,285.67
Eaton
250
600
KD3300W
KD3300W
In Stock
From
$1,728.16
Cutler Hammer
300
600
KD3300Y
KD3300Y
In Stock
From
$854.81
Eaton
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.