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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
314C640G11
314C640G11
In Stock
From
$662.75
Westinghouse
300
600
314C640G12
314C640G12
In Stock
From
$55.60
Westinghouse
350
600
314C640G13
314C640G13
In Stock
From
$1,000.16
Westinghouse
400
600
314C640G17
314C640G17
In Stock
From
$689.62
Westinghouse
70
600
314C640G18
314C640G18
In Stock
From
$1,422.46
Westinghouse
90
600
314C640G19
314C640G19
In Stock
From
$1,296.28
Westinghouse
100
600
314C640G20
314C640G20
In Stock
From
Get Price
Westinghouse
125
600
314C640G21
314C640G21
In Stock
From
$725.90
Westinghouse
150
600
314C640G22
314C640G22
In Stock
From
$956.72
Westinghouse
175
600
314C640G23
314C640G23
In Stock
From
$403.58
Westinghouse
200
600
314C640G24
314C640G24
In Stock
From
$786.60
Westinghouse
225
600
315C043G01
315C043G01
In Stock
From
$561.64
Westinghouse
125
600
315C043G02
315C043G02
In Stock
From
$644.77
Westinghouse
150
600
315C043G03
315C043G03
In Stock
From
$548.32
Westinghouse
175
600
315C043G04
315C043G04
In Stock
From
$452.16
Westinghouse
200
600
315C043G05
315C043G05
In Stock
From
$709.06
Westinghouse
225
600
315C043G06
315C043G06
In Stock
From
$709.91
Westinghouse
250
600
315C043G07
315C043G07
In Stock
From
$937.74
Westinghouse
300
600
315C043G08
315C043G08
In Stock
From
$55.60
Westinghouse
350
600
315C043G09
315C043G09
In Stock
From
$527.42
Westinghouse
400
600
315C043G10
315C043G10
In Stock
From
$1,034.22
Westinghouse
500
600
315C043G11
315C043G11
In Stock
From
$582.10
Westinghouse
600
600
315C043G14
315C043G14
In Stock
From
$1,625.51
Westinghouse
700
600
315C043G15
315C043G15
In Stock
From
$1,557.98
Westinghouse
800
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.