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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
MA2400
MA2400
In Stock
From
Get Price
Westinghouse
400
600
MA2400S
MA2400S
In Stock
From
Get Price
Westinghouse
400
600
MA2450
MA2450
In Stock
From
$1,944.57
Westinghouse
450
600
MA2450S
MA2450S
In Stock
From
$2,288.11
Westinghouse
450
600
MA2500
MA2500
In Stock
From
$1,034.22
Westinghouse
500
600
MA2500S
MA2500S
In Stock
From
$1,034.22
Westinghouse
500
600
MA2600
MA2600
In Stock
From
$727.62
Westinghouse
600
600
MA2600S
MA2600S
In Stock
From
$727.62
Westinghouse
600
600
MA2700S
MA2700S
In Stock
From
$2,188.11
Westinghouse
700
600
MA2800FS
MA2800FS
In Stock
From
$3,680.98
Westinghouse
800
600
MA2800S
MA2800S
In Stock
From
$2,977.69
Westinghouse
800
600
MA2800WK
MA2800WK
In Stock
From
$3,030.66
Westinghouse
800
600
MA2800WSK
MA2800WSK
In Stock
From
$2,710.24
Westinghouse
800
600
MA3125
MA3125
In Stock
From
$596.94
Westinghouse
125
600
MA3125S
MA3125S
In Stock
From
Get Price
Westinghouse
125
600
MA3150
MA3150
In Stock
From
$907.37
Westinghouse
150
600
MA3150S
MA3150S
In Stock
From
$907.37
Westinghouse
150
600
MA3175
MA3175
In Stock
From
$941.24
Westinghouse
175
600
MA3175S
MA3175S
In Stock
From
$941.24
Westinghouse
175
600
MA3200S
MA3200S
In Stock
From
Get Price
Westinghouse
200
600
MA3225
MA3225
In Stock
From
Get Price
Westinghouse
225
600
MA3225S
MA3225S
In Stock
From
Get Price
Westinghouse
225
600
MA3250
MA3250
In Stock
From
Get Price
Westinghouse
250
600
MA3250S
MA3250S
In Stock
From
Get Price
Westinghouse
250
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.