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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
M9F21103
M9F21103
In Stock
From
$66.66
Schneider Electric
M9F21105
M9F21105
In Stock
From
$61.61
Schneider Electric
M9F22102
M9F22102
In Stock
From
$66.25
Schneider Electric
M9F22103
M9F22103
In Stock
From
$68.57
Schneider Electric
M9F22116
M9F22116
In Stock
From
$58.54
Schneider Electric
M9F22120
M9F22120
Limited Stock
From
Get Price
Schneider Electric
M9F22170
M9F22170
In Stock
From
$58.67
Schneider Electric
M9F22202
M9F22202
In Stock
From
$225.89
Schneider Electric
M9F22206
M9F22206
In Stock
From
$94.95
Schneider Electric
M9F22210
M9F22210
In Stock
From
$90.94
Schneider Electric
M9F22306
M9F22306
In Stock
From
$269.25
Schneider Electric
M9F22320
M9F22320
In Stock
From
$305.00
Schneider Electric
M9F22332
M9F22332
In Stock
From
$255.96
Schneider Electric
M9F22450
M9F22450
In Stock
From
$314.44
Schneider Electric
M9F23203
M9F23203
Limited Stock
From
Get Price
Schneider Electric
M9F23206
M9F23206
In Stock
From
$113.44
Schneider Electric
M9F23232
M9F23232
In Stock
From
$194.69
Schneider Electric
M9F42101
M9F42101
In Stock
From
$77.42
Schneider Electric
M9F42104
M9F42104
In Stock
From
$71.82
Schneider Electric
M9F42106
M9F42106
In Stock
From
$80.76
Schneider Electric
M9F42108
M9F42108
In Stock
From
$61.17
Schneider Electric
M9F42115
M9F42115
In Stock
From
$81.37
Schneider Electric
M9F42120
M9F42120
In Stock
From
$102.02
Schneider Electric
M9F42125
M9F42125
In Stock
From
$69.66
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.