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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
2610D53G12
2610D53G12
In Stock
From
$339.36
Cutler Hammer
25
600
373B237G03
373B237G03
In Stock
From
$3,748.31
Westinghouse
800
600
373B237G04
373B237G04
In Stock
From
$3,227.52
Westinghouse
800
600
373B237G07
373B237G07
In Stock
From
$1,662.13
Westinghouse
225
600
373B237G08
373B237G08
In Stock
From
$1,957.36
Westinghouse
225
600
504C743G02
504C743G02
In Stock
From
$1,379.28
Westinghouse
70
600
504C743G03
504C743G03
In Stock
From
$2,223.45
Westinghouse
90
600
504C743G04
504C743G04
In Stock
From
$2,513.67
Westinghouse
100
600
504C743G05
504C743G05
In Stock
From
$978.20
Westinghouse
125
600
504C743G06
504C743G06
In Stock
From
Get Price
Cutler Hammer
150
600
504C743G07
504C743G07
In Stock
From
$850.51
Westinghouse
175
600
504C743G08
504C743G08
In Stock
From
$1,367.23
Westinghouse
200
600
504C743G09
504C743G09
In Stock
From
$833.46
Cutler Hammer
225
600
504C743G17
504C743G17
In Stock
From
$1,381.67
Westinghouse
70
600
504C743G18
504C743G18
In Stock
From
$1,493.65
Westinghouse
90
600
504C743G19
504C743G19
In Stock
From
$1,187.20
Westinghouse
100
600
504C743G21
504C743G21
In Stock
From
$896.08
Cutler Hammer
150
600
504C743G22
504C743G22
In Stock
From
$1,321.10
Cutler Hammer
175
600
504C743G23
504C743G23
In Stock
From
$1,868.69
Westinghouse
200
600
504C743G24
504C743G24
In Stock
From
Get Price
Cutler Hammer
225
600
505C220G09
505C220G09
In Stock
From
$936.70
Cutler Hammer
400
600
505C220G10
505C220G10
In Stock
From
$1,761.24
Cutler Hammer
500
600
505C220G11
505C220G11
In Stock
From
$2,296.37
Cutler Hammer
600
600
505C220G12
505C220G12
In Stock
From
$5,098.02
Westinghouse
700
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.