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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
MQJ2110KH
MQJ2110KH
In Stock
From
$619.16
Murray Corporation
110
240
MQJ2125
MQJ2125
In Stock
From
$107.92
Murray Corporation
125
240
MQJ2150
MQJ2150
In Stock
From
$119.82
Murray Corporation
150
240
MQJ2175
MQJ2175
In Stock
From
$172.80
Murray Corporation
175
240
MQJ2200
MQJ2200
In Stock
From
$270.30
Murray Corporation
200
240
MQJ2225
MQJ2225
In Stock
From
$187.75
Murray Corporation
225
240
MQJ2225KH
MQJ2225KH
In Stock
From
$538.75
Murray Corporation
225
240
MQJ260
MQJ260
In Stock
From
$176.00
Murray Corporation
60
240
MQJ260KL
MQJ260KL
In Stock
From
$577.26
Murray Corporation
60
240
MQJ270
MQJ270
In Stock
From
$24.97
Murray Corporation
70
240
MQJ290
MQJ290
In Stock
From
$172.80
Murray Corporation
90
240
MQJ3100
MQJ3100
In Stock
From
$269.44
Murray Corporation
100
240
MQJ3100KH
MQJ3100KH
In Stock
From
$1,209.95
Murray Corporation
100
240
MQJ3100KL
MQJ3100KL
In Stock
From
$806.40
Murray Corporation
100
240
MQJ3110
MQJ3110
In Stock
From
$460.80
Murray Corporation
110
240
MQJ3110KH
MQJ3110KH
In Stock
From
$693.92
Murray Corporation
110
240
MQJ3110KL
MQJ3110KL
In Stock
From
$806.40
Murray Corporation
110
240
MQJ3125KL
MQJ3125KL
In Stock
From
$806.40
Murray Corporation
125
240
MQJ3150
MQJ3150
In Stock
From
$439.15
Murray Corporation
150
240
MQJ3150KL
MQJ3150KL
In Stock
From
$597.69
Murray Corporation
150
240
MQJ3175
MQJ3175
In Stock
From
$460.80
Murray Corporation
175
240
MQJ3175KL
MQJ3175KL
In Stock
From
$806.40
Murray Corporation
175
240
MQJ3200KL
MQJ3200KL
In Stock
From
$647.78
Murray Corporation
200
240
MQJ3225KL
MQJ3225KL
In Stock
From
$806.40
Murray Corporation
225
240
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.