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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
MG24535
MG24535
In Stock
From
$170.24
Square D
4
240
MG24536
MG24536
In Stock
From
$113.17
Square D
6
240
MG24537
MG24537
In Stock
From
$223.49
Schneider Electric
8
240
MG24538
MG24538
In Stock
From
$228.30
Square D
10
240
MG24539
MG24539
In Stock
From
$86.39
Square D
13
240
MG24540
MG24540
In Stock
From
$136.89
Schneider Electric
16
240
MG24541
MG24541
In Stock
From
$364.69
Square D
20
240
MG24542
MG24542
In Stock
From
$197.40
Square D
25
240
MG24543
MG24543
In Stock
From
$211.44
Schneider Electric
32
240
MG24544
MG24544
In Stock
From
$67.49
Schneider Electric
40
240
MG24546
MG24546
In Stock
From
$84.62
Square D
63
240
MG24553
MG24553
In Stock
From
$164.43
Square D
8
240
MG24556
MG24556
In Stock
From
$90.90
Schneider Electric
16
240
MG24557
MG24557
In Stock
From
$160.38
Schneider Electric
20
240
MG24559
MG24559
In Stock
From
$160.38
Schneider Electric
32
240
MG24562
MG24562
Limited Stock
From
Get Price
Schneider Electric
63
240
MGF26600
MGF26600
In Stock
From
$10,687.67
Square D
600
600
MGF36300
MGF36300
In Stock
From
$6,672.34
Square D
300
600
MGF36400
MGF36400
In Stock
From
$2,459.90
Square D
400
600
MGF36600
MGF36600
In Stock
From
$3,726.59
Square D
600
600
MGL36500
MGL36500
In Stock
From
$3,409.06
Square D
500
600
MGL36500AASA
MGL36500AASA
In Stock
From
$3,412.31
Square D
500
600
MGL36600SA
MGL36600SA
In Stock
From
$3,872.19
Square D
600
600
MGP36600
MGP36600
In Stock
From
$2,078.55
Square D
600
600
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.