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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
KD3250
KD3250
In Stock
From
$1,231.73
Eaton
250
600
KD3300
KD3300
In Stock
From
$1,343.49
Eaton
300
600
KD3350
KD3350
In Stock
From
$1,581.73
Eaton
350
600
KD3400
KD3400
In Stock
From
$816.29
Eaton
400
600
KD3400K
KD3400K
In Stock
From
$2,150.68
Eaton
400
600
KDC3100
KDC3100
In Stock
From
$3,883.62
Eaton
100
600
KDC3200
KDC3200
In Stock
From
$2,358.14
Eaton
200
600
KDC3400
KDC3400
In Stock
From
$1,773.33
Eaton
400
600
LA36125
LA36125
In Stock
From
$1,278.20
Square D
125
600
LA36150
LA36150
In Stock
From
$1,545.37
Square D
150
600
LA36175
LA36175
In Stock
From
$1,681.31
Square D
175
600
LA36225
LA36225
In Stock
From
$2,167.36
Square D
225
600
LA36300
LA36300
In Stock
From
$2,531.75
Square D
300
600
LA36350
LA36350
In Stock
From
$2,311.76
Square D
350
600
LA36400
LA36400
In Stock
From
$2,192.36
Square D
400
600
LD3600T56W
LD3600T56W
In Stock
From
$3,165.92
Eaton
600
600
LDC3500
LDC3500
In Stock
From
$4,446.45
Eaton
500
600
LGH3400FAG
LGH3400FAG
In Stock
From
$4,693.00
Eaton
400
600
LGH3600FAG
LGH3600FAG
In Stock
From
$3,141.52
Eaton
600
600
LH36300
LH36300
In Stock
From
$2,097.40
Square D
300
600
LH36350
LH36350
In Stock
From
$1,959.69
Square D
350
600
LH36400
LH36400
In Stock
From
$1,768.75
Square D
400
600
LJA36250U31X
LJA36250U31X
In Stock
From
$5,755.33
Square D
250
600
LJA36400U31X
LJA36400U31X
In Stock
From
$4,767.37
Square D
400
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.