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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
MC2800M
MC2800M
In Stock
From
$2,826.39
Westinghouse
800
600
MC3400M
MC3400M
In Stock
From
$1,822.20
Westinghouse
400
600
MC3500
MC3500
In Stock
From
$1,313.80
Westinghouse
500
600
MC3500M
MC3500M
In Stock
From
Get Price
Westinghouse
500
600
MC3600
MC3600
In Stock
From
$1,084.38
Westinghouse
600
600
MC3600M
MC3600M
In Stock
From
$1,608.24
Westinghouse
600
600
MC3700
MC3700
In Stock
From
$1,309.16
Westinghouse
700
600
MC3700M
MC3700M
In Stock
From
$1,309.16
Westinghouse
700
600
MC3800FM
MC3800FM
In Stock
From
$2,350.69
Westinghouse
800
600
MC3800M
MC3800M
In Stock
From
Get Price
Westinghouse
800
600
MC3800WK
MC3800WK
In Stock
From
$1,098.72
Cutler Hammer
800
600
MCA2400
MCA2400
In Stock
From
Get Price
Westinghouse
400
600
MCA2500
MCA2500
In Stock
From
$1,034.22
Westinghouse
500
600
MCA2600
MCA2600
In Stock
From
$727.62
Westinghouse
600
600
MCA2700
MCA2700
In Stock
From
$3,375.54
Westinghouse
700
600
MCA2800
MCA2800
In Stock
From
$3,680.98
Westinghouse
800
600
MCA2800F
MCA2800F
In Stock
From
$3,680.98
Westinghouse
800
600
MCA3400
MCA3400
In Stock
From
$1,822.20
Westinghouse
400
600
MCA3500
MCA3500
In Stock
From
Get Price
Westinghouse
500
600
MCA3700
MCA3700
In Stock
From
$1,309.16
Westinghouse
700
600
MCA3800
MCA3800
In Stock
From
Get Price
Westinghouse
800
600
MCA3800F
MCA3800F
In Stock
From
Get Price
Westinghouse
800
600
MCC2400
MCC2400
In Stock
From
Get Price
Westinghouse
400
600
MCC2500
MCC2500
In Stock
From
$1,034.22
Westinghouse
500
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.