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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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5SY52067
5SY52067
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$334.32
Siemens
5SY5425-7
5SY5425-7
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5SY7204-8
5SY7204-8
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5SY7206-7
5SY7206-7
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Siemens
5SY7316-7
5SY7316-7
In Stock
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$222.77
Siemens
5SY8201-8
5SY8201-8
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Siemens
5SY8210-8
5SY8210-8
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5SY8420-7
5SY8420-7
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Siemens
5TL1232-0
5TL1232-0
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5TL1240-0
5TL1240-0
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Siemens
5TL1492-0
5TL1492-0
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Siemens
8WA1-011-8SF26
8WA1-011-8SF26
In Stock
From
$20.42
Siemens
B130-BL
B130-BL
In Stock
From
$32.12
Siemens
BLHF220AH
BLHF220AH
In Stock
From
$100.00
Siemens
C4537
C4537
In Stock
From
$2,455.71
Siemens
CFSL400N
CFSL400N
In Stock
From
$393.90
Siemens
E1-H020
E1-H020
In Stock
From
$83.99
Siemens
ED320W
ED320W
In Stock
From
$484.94
Siemens
EF3-A003Z
EF3-A003Z
In Stock
From
$195.49
Siemens
EF3B150Z
EF3B150Z
In Stock
From
$336.46
Siemens
EP1530
EP1530
In Stock
From
$18.56
Siemens
EQP-2125
EQP-2125
In Stock
From
$73.56
Siemens
ET-4011
ET-4011
In Stock
From
$96.25
Siemens
ET1564
ET1564
In Stock
From
$35.26
Siemens
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.