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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
QP240
QP240
In Stock
From
$17.81
Siemens
QP315
QP315
In Stock
From
$45.99
Siemens
QPF240
QPF240
In Stock
From
$48.16
Siemens
QS2110
QS2110
In Stock
From
$158.14
Siemens
R2424L1125CU
R2424L1125CU
In Stock
From
$1,108.74
Siemens
RHOCQVDE
RHOCQVDE
In Stock
From
$522.83
Siemens
RHOH62
RHOH62
In Stock
From
$183.42
Siemens
RHOHC
RHOHC
In Stock
From
$274.67
Siemens
RHVF79H
RHVF79H
In Stock
From
$133.41
Siemens
SKM3B600
SKM3B600
In Stock
From
$3,385.89
Siemens
SKM3F800G
SKM3F800G
In Stock
From
$3,474.63
Siemens
TW1JG600
TW1JG600
In Stock
From
$64.46
Siemens
W-G-16A-415V
W-G-16A-415V
Limited Stock
From
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Siemens
W-L-10A-380V
W-L-10A-380V
Limited Stock
From
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Siemens
W58-XB1A4A-35
W58-XB1A4A-35
In Stock
From
$4.12
Siemens
3RV1321-0AC10
3RV1321-0AC10
Limited Stock
From
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Siemens
3RV1321-0CC10
3RV1321-0CC10
Limited Stock
From
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Siemens
3RV1821-1AD10
3RV1821-1AD10
In Stock
From
$590.67
Siemens
3RV1821-4BD10
3RV1821-4BD10
In Stock
From
$461.64
Siemens
3RV2111-0AA10
3RV2111-0AA10
In Stock
From
$100.47
Siemens
3RV2321-4EC10
3RV2321-4EC10
Limited Stock
From
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Siemens
3RV2331-4VC10
3RV2331-4VC10
In Stock
From
$404.00
Siemens
3RV2331-4WC10
3RV2331-4WC10
Limited Stock
From
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Siemens
3VA4111-4ED54-0AA0
3VA4111-4ED54-0AA0
In Stock
From
$717.10
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.