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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.
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Part Number
PRICE
Manufacturer
QO16EC5
QO16EC5
Limited Stock
From
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Schneider Electric
QO200RCDX100
QO200RCDX100
Limited Stock
From
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Schneider Electric
QO2100C
QO2100C
In Stock
From
$111.35
Schneider Electric
QO232X
QO232X
Limited Stock
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Schneider Electric
QO250VSC10T
QO250VSC10T
In Stock
From
$97.72
Schneider Electric
QO263EC10
QO263EC10
Limited Stock
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Schneider Electric
QO3040CP
QO3040CP
In Stock
From
$42.79
Schneider Electric
QO306EC6
QO306EC6
Limited Stock
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Schneider Electric
QO306ED10
QO306ED10
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Schneider Electric
QO306X
QO306X
Limited Stock
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Schneider Electric
QO31005273
QO31005273
In Stock
From
$277.74
Schneider Electric
QO310EC10
QO310EC10
Limited Stock
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Schneider Electric
QO316EC10
QO316EC10
In Stock
From
$123.69
Schneider Electric
QO316X
QO316X
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Schneider Electric
QO320E39
QO320E39
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Schneider Electric
QO320EC10
QO320EC10
In Stock
From
$88.29
Schneider Electric
QO325EC10
QO325EC10
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Schneider Electric
QO332EC10
QO332EC10
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Schneider Electric
QO332X
QO332X
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Schneider Electric
QO340D
QO340D
In Stock
From
$250.04
Schneider Electric
QO340EPD5238
QO340EPD5238
In Stock
From
$653.60
Schneider Electric
QO345E39
QO345E39
Limited Stock
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Schneider Electric
QO350EC10
QO350EC10
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Schneider Electric
QO360CP
QO360CP
In Stock
From
$55.79
Schneider Electric
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.