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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
MQJ360
MQJ360
In Stock
From
$316.35
Murray Corporation
60
240
MQJ360KL
MQJ360KL
In Stock
From
$806.40
Murray Corporation
60
240
MQJ370
MQJ370
In Stock
From
$460.80
Murray Corporation
70
240
MQJ370KL
MQJ370KL
In Stock
From
$806.40
Murray Corporation
70
240
MQJ380
MQJ380
In Stock
From
$454.40
Murray Corporation
80
240
MQJ380KL
MQJ380KL
In Stock
From
$806.40
Murray Corporation
80
240
MQJ390
MQJ390
In Stock
From
$224.94
Murray Corporation
90
240
MQJ390KL
MQJ390KL
In Stock
From
$582.66
Murray Corporation
90
240
MEQ9683
MEQ9683
In Stock
From
$658.17
Murray Corporation
150
240
MEQ9985
MEQ9985
In Stock
From
$9.09
Murray Corporation
200
240
MP125GF
MP125GF
In Stock
From
$135.01
Murray Corporation
25
120
MP2110
MP2110
Limited Stock
From
Get Price
Murray Corporation
110
240
MP220AFC
MP220AFC
In Stock
From
$109.33
Murray Corporation
20
240
MP220SN
MP220SN
In Stock
From
$96.53
Murray Corporation
20
120
MP220ST
MP220ST
In Stock
From
$226.17
Murray Corporation
20
240
MP230EG
MP230EG
In Stock
From
$447.30
Murray Corporation
30
240
MP240EG
MP240EG
In Stock
From
$382.84
Murray Corporation
40
240
MP245
MP245
In Stock
From
$25.83
Murray Corporation
45
240
MP260EG
MP260EG
In Stock
From
$244.40
Murray Corporation
60
240
MPD2150
MPD2150
In Stock
From
$281.98
Murray Corporation
150
240
MPH220
MPH220
In Stock
From
$8.18
Murray Corporation
20
240
MP2110KH
MP2110KH
In Stock
From
$297.60
Murray Corporation
110
240
MP2125KH
MP2125KH
In Stock
From
$183.64
Murray Corporation
125
240
MP21520
MP21520
In Stock
From
$29.41
Murray Corporation
20
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.