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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
M9F42170
M9F42170
In Stock
From
$68.16
Schneider Electric
M9F42202
M9F42202
In Stock
From
$232.91
Schneider Electric
M9F42206
M9F42206
In Stock
From
$108.22
Schneider Electric
M9F42210
M9F42210
In Stock
From
$138.25
Schneider Electric
M9F42215
M9F42215
In Stock
From
$123.72
Schneider Electric
M9F42235
M9F42235
In Stock
From
$177.34
Schneider Electric
M9F43106
M9F43106
In Stock
From
$55.77
Schneider Electric
M9F43110
M9F43110
In Stock
From
$68.69
Schneider Electric
M9F43115
M9F43115
In Stock
From
$75.08
Schneider Electric
M9F43204
M9F43204
In Stock
From
$141.17
Schneider Electric
M9F43210
M9F43210
In Stock
From
$125.99
Schneider Electric
M9F43301
M9F43301
In Stock
From
$245.32
Schneider Electric
M9F43305
M9F43305
In Stock
From
$183.44
Schneider Electric
M9F43315
M9F43315
In Stock
From
$292.84
Schneider Electric
M9F43335
M9F43335
In Stock
From
$305.17
Schneider Electric
M9F52101
M9F52101
In Stock
From
$102.86
Schneider Electric
M9F52104
M9F52104
In Stock
From
$84.92
Schneider Electric
M9F52115
M9F52115
In Stock
From
$57.17
Schneider Electric
M9F52150
M9F52150
In Stock
From
$51.51
Schneider Electric
M9F53330
M9F53330
In Stock
From
$359.80
Schneider Electric
M9F54106
M9F54106
In Stock
From
$45.77
Schneider Electric
M9R81263
M9R81263
In Stock
From
$657.08
Schneider Electric
M9U11216
M9U11216
Limited Stock
From
Get Price
Schneider Electric
M9U21102
M9U21102
In Stock
From
$174.39
Schneider Electric
Popular Molded Case Circuit Breaker Manufacturers
Eaton
Square D
ABB
Siemens

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.