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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
LV432404
LV432404
In Stock
From
$1,831.62
Schneider Electric
400
690
LV432408
LV432408
In Stock
From
$2,486.62
Schneider Electric
400
690
LV432413
LV432413
In Stock
From
$502.49
Schneider Electric
400
690
LV432414
LV432414
In Stock
From
$2,913.34
Schneider Electric
400
690
LV432415
LV432415
In Stock
From
$1,904.46
Schneider Electric
400
690
LV432803
LV432803
In Stock
From
$4,040.00
Schneider Electric
630
690
LV432804
LV432804
In Stock
From
$4,408.65
Schneider Electric
630
690
LV432808
LV432808
In Stock
From
$5,116.07
Schneider Electric
630
690
LV432813
LV432813
In Stock
From
$5,083.25
Schneider Electric
630
690
LV432814
LV432814
In Stock
From
$5,557.93
Schneider Electric
630
690
LV432815
LV432815
In Stock
From
$5,239.30
Schneider Electric
630
690
LV432876
LV432876
In Stock
From
$535.92
Schneider Electric
630
690
LV432893
LV432893
In Stock
From
$2,118.50
Schneider Electric
630
690
LV438930
LV438930
In Stock
From
$832.57
Schneider Electric
250
500
MB512
MB512
In Stock
From
$468.09
General Electric
225
480
MBK100
MBK100
In Stock
From
$151.61
Siemens
100
240
MBK100M
MBK100M
In Stock
From
$91.47
Murray Corporation
100
240
MBKFD3200
MBKFD3200
In Stock
From
$3,981.01
Siemens
200
600
MBKFD3225
MBKFD3225
In Stock
From
$2,048.56
Siemens
225
600
MBKFD3250
MBKFD3250
In Stock
From
$1,971.62
Siemens
250
600
MBKJD3400A
MBKJD3400A
In Stock
From
$1,077.29
Siemens
400
600
MBKQJ1125
MBKQJ1125
In Stock
From
$94.76
Siemens
125
240
MBKQJ1200
MBKQJ1200
In Stock
From
$328.88
Siemens
200
240
MBKQJ3175
MBKQJ3175
In Stock
From
$1,030.56
Siemens
175
240
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.