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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
MQ115
MQ115
In Stock
From
$22.69
Murray Corporation
15
120
MQ120
MQ120
In Stock
From
$28.57
Murray Corporation
20
120
BR255
BR255
In Stock
From
$98.80
Murray Corporation
55
240
EP3125
EP3125
In Stock
From
$1,176.08
Murray Corporation
125
240
EP3225
EP3225
In Stock
From
$464.85
Murray Corporation
225
240
MBK225M
MBK225M
In Stock
From
$209.22
Murray Corporation
225
240
MP2100KH
MP2100KH
In Stock
From
$89.28
Murray Corporation
100
240
MP220230CT2
MP220230CT2
In Stock
From
$64.70
Murray Corporation
30
240
MP230230
MP230230
In Stock
From
$33.88
Murray Corporation
30
240
MP23520
MP23520
In Stock
From
$117.02
Murray Corporation
35
240
MP24020
MP24020
In Stock
From
$27.94
Murray Corporation
40
240
MP24520
MP24520
In Stock
From
$44.07
Murray Corporation
45
240
MP25015
MP25015
In Stock
From
$52.87
Murray Corporation
50
240
MP320KH
MP320KH
In Stock
From
$306.30
Murray Corporation
20
240
MP330KH
MP330KH
In Stock
From
$228.67
Murray Corporation
30
240
MP360KH
MP360KH
In Stock
From
$378.22
Murray Corporation
60
240
MPD2150RH
MPD2150RH
In Stock
From
$468.96
Murray Corporation
150
240
MPD2200KH
MPD2200KH
In Stock
From
$290.36
Murray Corporation
200
240
MPD2200RH
MPD2200RH
In Stock
From
$465.12
Murray Corporation
200
240
MPP2150KH
MPP2150KH
In Stock
From
$240.41
Murray Corporation
150
240
MQ215
MQ215
In Stock
From
$28.12
Murray Corporation
15
240
MQ240
MQ240
In Stock
From
$36.80
Murray Corporation
40
240
MQJ2100
MQJ2100
In Stock
From
$99.36
Murray Corporation
100
240
MQJ2110
MQJ2110
In Stock
From
$176.00
Murray Corporation
110
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.