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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.
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Part Number
PRICE
Manufacturer
FHL3600M4200
FHL3600M4200
In Stock
From
$3.73
Square D
KCL341251287
KCL341251287
In Stock
From
$28.44
Square D
LGA36400U43XTB
LGA36400U43XTB
In Stock
From
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Square D
MG20430
MG20430
In Stock
From
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Schneider Electric
12616
12616
Limited Stock
From
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Schneider Electric
16752
16752
In Stock
From
$1,721.04
Schneider Electric
16916
16916
Limited Stock
From
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Schneider Electric
17417
17417
In Stock
From
$43.55
Schneider Electric
17873
17873
In Stock
From
$32.84
Schneider Electric
17887
17887
In Stock
From
$55.87
Schneider Electric
18691
18691
Limited Stock
From
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Schneider Electric
19661
19661
In Stock
From
$111.92
Schneider Electric
21024
21024
Limited Stock
From
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Schneider Electric
21111
21111
Limited Stock
From
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Schneider Electric
21325
21325
Limited Stock
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Schneider Electric
21348
21348
In Stock
From
$4.71
Schneider Electric
21607
21607
Limited Stock
From
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Schneider Electric
21845
21845
Limited Stock
From
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Schneider Electric
23088
23088
Limited Stock
From
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Schneider Electric
242-2362
242-2362
In Stock
From
$2,314.74
Schneider Electric
24236
24236
In Stock
From
$14.34
Schneider Electric
24264
24264
In Stock
From
$33.67
Schneider Electric
24305
24305
In Stock
From
$46.69
Schneider Electric
24310
24310
In Stock
From
$12.62
Schneider Electric
Popular Molded Case Circuit Breaker Manufacturers
Eaton
Square D
ABB
Siemens

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.