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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
MP325
MP325
In Stock
From
$53.29
Murray Corporation
25
240
MP335
MP335
In Stock
From
$45.31
Murray Corporation
35
240
MP360
MP360
In Stock
From
$37.59
Murray Corporation
60
240
MP390
MP390
In Stock
From
$71.78
Murray Corporation
90
240
MPA115AFC
MPA115AFC
In Stock
From
$61.81
Murray Corporation
15
120
MPA120AFC
MPA120AFC
In Stock
From
$42.03
Murray Corporation
20
120
MBK100M
MBK100M
In Stock
From
$93.84
Murray Corporation
100
240
MBK200M
MBK200M
Limited Stock
From
Get Price
Murray Corporation
200
240
MP120DF
MP120DF
In Stock
From
$106.05
Murray Corporation
20
120
MP120GFA
MP120GFA
In Stock
From
$75.16
Murray Corporation
20
120
MP120KH
MP120KH
In Stock
From
$15.16
Murray Corporation
20
120
MP220
MP220
In Stock
From
$15.97
Murray Corporation
20
240
MP225
MP225
In Stock
From
$19.09
Murray Corporation
25
240
MP240
MP240
In Stock
From
$21.61
Murray Corporation
40
240
MP250
MP250
In Stock
From
$11.61
Murray Corporation
50
240
MP3100KH
MP3100KH
In Stock
From
$251.47
Murray Corporation
100
240
MP345
MP345
In Stock
From
$44.53
Murray Corporation
45
240
MQ130
MQ130
In Stock
From
$6.28
Murray Corporation
30
120
MP115AFC
MP115AFC
Limited Stock
From
Get Price
Murray Corporation
15
120
MP115EG
MP115EG
In Stock
From
$339.58
Murray Corporation
15
120
MP125
MP125
In Stock
From
$5.70
Murray Corporation
25
120
MP130EG
MP130EG
In Stock
From
$342.38
Murray Corporation
30
120
MP145
MP145
In Stock
From
$7.23
Murray Corporation
45
120
MP1520
MP1520
In Stock
From
$12.80
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.