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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
504C740G13
504C740G13
In Stock
From
$3,293.52
Westinghouse
400
600
504C740G17
504C740G17
In Stock
From
$1,381.67
Westinghouse
70
600
504C740G18
504C740G18
In Stock
From
Get Price
Cutler Hammer
90
600
504C740G19
504C740G19
In Stock
From
$1,187.20
Westinghouse
100
600
504C740G20
504C740G20
In Stock
From
$2,208.59
Westinghouse
125
600
504C740G21
504C740G21
In Stock
From
$1,337.42
Westinghouse
150
600
504C740G22
504C740G22
In Stock
From
$1,675.92
Westinghouse
175
600
504C740G23
504C740G23
In Stock
From
$1,868.69
Westinghouse
200
600
504C740G24
504C740G24
In Stock
From
$1,957.36
Westinghouse
225
600
504C740G25
504C740G25
In Stock
From
$10,270.25
Westinghouse
250
600
504C740G26
504C740G26
In Stock
From
$2,544.74
Westinghouse
300
600
504C740G27
504C740G27
In Stock
From
$2,891.47
Westinghouse
350
600
504C740G28
504C740G28
In Stock
From
$1,921.20
Westinghouse
400
600
BA3090H
BA3090H
In Stock
From
$65.00
Eaton
90
240
BQ215220
BQ215220
In Stock
From
$197.78
Cutler Hammer
20
240
BQ215250
BQ215250
In Stock
From
$231.19
Cutler Hammer
50
240
BQ2202115
BQ2202115
In Stock
From
$197.78
Cutler Hammer
20
240
BQ225230
BQ225230
In Stock
From
$147.61
Cutler Hammer
30
240
BQ230215
BQ230215
In Stock
From
$147.61
Cutler Hammer
30
240
BQ230220
BQ230220
In Stock
From
$147.61
Cutler Hammer
30
240
BQ2402115
BQ2402115
In Stock
From
$133.22
Cutler Hammer
40
240
BQ250250
BQ250250
In Stock
From
$149.12
Cutler Hammer
50
240
BQC2252120
BQC2252120
In Stock
From
$31.36
Cutler Hammer
25
240
BQC225225
BQC225225
In Stock
From
$81.41
Cutler Hammer
25
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.