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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
LAP36225MT
LAP36225MT
In Stock
From
$288.05
Square D
225
600
LAP36250MB
LAP36250MB
In Stock
From
$918.13
Square D
250
600
LAP36300
LAP36300
In Stock
From
$1,256.82
Square D
300
600
LAP36300MB
LAP36300MB
In Stock
From
$1,418.67
Square D
300
600
LAP36300MT
LAP36300MT
In Stock
From
$5,030.87
Square D
300
600
LAP36350MB
LAP36350MB
In Stock
From
$1,532.50
Square D
350
600
LAP36400
LAP36400
In Stock
From
$1,453.14
Square D
400
600
LAP36400MB
LAP36400MB
In Stock
From
$791.11
Square D
400
600
LAP36400MT
LAP36400MT
In Stock
From
$1,449.57
Square D
400
600
LCL3400F
LCL3400F
In Stock
From
$1,558.20
Eaton
400
600
LD2400
LD2400
In Stock
From
$1,867.10
Westinghouse
400
600
LD4600F
LD4600F
In Stock
From
$5,643.00
Eaton
600
600
LDA36250U31X
LDA36250U31X
In Stock
From
$1,701.20
Square D
250
600
LDL36400U31X
LDL36400U31X
In Stock
From
$1,829.15
Schneider Electric
400
600
LDL36400U33X
LDL36400U33X
In Stock
From
$2,700.62
Schneider Electric
400
600
LDL36400U43X
LDL36400U43X
In Stock
From
$1,886.54
Square D
400
600
LE36250LSG
LE36250LSG
In Stock
From
$3,580.15
Schneider Electric
250
600
LG3450
LG3450
In Stock
From
$4,770.61
Eaton
450
600
LG3500
LG3500
In Stock
From
$4,210.60
Westinghouse
500
600
LGA36400U33X
LGA36400U33X
In Stock
From
$2,131.04
Square D
400
600
LGB1B015B
LGB1B015B
In Stock
From
$185.94
Siemens
15
347
LGB1B025B
LGB1B025B
In Stock
From
$207.42
Siemens
25
347
LGB1B030B
LGB1B030B
In Stock
From
$295.57
Siemens
30
347
LGB1B035B
LGB1B035B
In Stock
From
$476.69
Siemens
35
347
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.