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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
MHL36900
MHL36900
In Stock
From
$1,181.99
Square D
900
600
MHP261000
MHP261000
In Stock
From
$2,961.14
Square D
1000
600
MHP26600
MHP26600
In Stock
From
$1,738.58
Square D
600
600
MHP26800
MHP26800
In Stock
From
$3,795.36
Square D
800
600
MHP360006M
MHP360006M
In Stock
From
$4,593.88
Square D
600
600
MHP361000
MHP361000
In Stock
From
$4,729.27
Square D
1000
600
MHP361000V
MHP361000V
In Stock
From
$7,093.91
Square D
1000
600
MHP36350
MHP36350
In Stock
From
$3,137.72
Square D
350
600
MHP36600
MHP36600
In Stock
From
$3,261.14
Square D
600
600
MHP36800
MHP36800
In Stock
From
$2,635.79
Square D
800
600
MJF36400
MJF36400
Limited Stock
From
Get Price
Square D
400
600
MJL26700
MJL26700
In Stock
From
$6,993.60
Square D
700
600
MP120KH
MP120KH
In Stock
From
$18.95
Murray Corporation
20
120
MP130KH
MP130KH
In Stock
From
$24.51
Murray Corporation
30
120
MP2020
MP2020
In Stock
From
$20.60
Murray
20
120
MP220
MP220
In Stock
From
$15.97
Murray Corporation
20
240
MP22015
MP22015
In Stock
From
$55.35
Murray Corporation
20
240
MP230
MP230
In Stock
From
$836.01
Siemens
30
240
MP240
MP240
In Stock
From
$22.75
Murray Corporation
40
240
MP250
MP250
In Stock
From
$11.71
Murray Corporation
50
240
MP250GF
MP250GF
In Stock
From
$206.02
Siemens
50
240
MP260
MP260
In Stock
From
$21.31
Siemens
60
240
MP3100KH
MP3100KH
In Stock
From
$251.47
Murray Corporation
100
240
MP320
MP320
In Stock
From
$19.45
Murray
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.