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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
UMBW-4C2-15
UMBW-4C2-15
In Stock
From
$97.97
WEG
UMBW-4D2-2
UMBW-4D2-2
In Stock
From
$56.09
WEG
UMBW-4D2-40
UMBW-4D2-40
In Stock
From
$38.72
WEG
UMBW-1C1-1
UMBW-1C1-1
In Stock
From
$10.37
WEG
UMBW-1C2-6
UMBW-1C2-6
In Stock
From
$51.51
WEG
MPW25-3-C016
MPW25-3-C016
Limited Stock
From
Get Price
WEG
UMBW-1D1-16
UMBW-1D1-16
In Stock
From
$32.32
WEG
UMBW-1D1-20
UMBW-1D1-20
In Stock
From
$32.32
WEG
UMBW-4D1-1
UMBW-4D1-1
In Stock
From
$23.59
WEG
MPW16-3-C016
MPW16-3-C016
In Stock
From
$64.75
WEG
UBW225N-FTU15-3A
UBW225N-FTU15-3A
In Stock
From
$255.36
WEG
DWB100CE100-3DX
DWB100CE100-3DX
In Stock
From
$145.82
WEG
DWB100JE50-3DX
DWB100JE50-3DX
In Stock
From
$307.05
WEG
DWB250PE150-3DF
DWB250PE150-3DF
In Stock
From
$416.74
WEG
LC-10/2
LC-10/2
In Stock
From
$23.17
WEG
MPW18-3-D063
MPW18-3-D063
In Stock
From
$105.04
WEG
MPW18-3-U018
MPW18-3-U018
In Stock
From
$133.32
WEG
MPW25-3-D063
MPW25-3-D063
In Stock
From
$118.32
WEG
MPW40-3-D025
MPW40-3-D025
In Stock
From
$100.22
WEG
MPW40-3-D063
MPW40-3-D063
In Stock
From
$140.92
WEG
MPW40-3-U001
MPW40-3-U001
In Stock
From
$124.59
WEG
MPW40-3-U016
MPW40-3-U016
In Stock
From
$99.97
WEG
MPW40-3-U032
MPW40-3-U032
In Stock
From
$110.33
WEG
SRW01-HMI
SRW01-HMI
In Stock
From
$225.23
WEG
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.