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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
1C30UL
1C30UL
In Stock
From
$44.85
Altech Corp
1C3UL
1C3UL
In Stock
From
$32.32
Altech Corp
1C4UL
1C4UL
In Stock
From
$56.97
Altech Corp
1CU4
1CU4
In Stock
From
$17.02
Altech Corp
1D075UM
1D075UM
In Stock
From
$42.79
Altech Corp
1D15UL
1D15UL
In Stock
From
$44.52
Altech Corp
1D1UL
1D1UL
In Stock
From
$23.99
Altech Corp
1D2.5UM
1D2.5UM
In Stock
From
$16.14
Altech Corp
1D3UM
1D3UM
In Stock
From
$37.50
Altech Corp
1D40UM
1D40UM
In Stock
From
$18.95
Altech Corp
1D4DL
1D4DL
In Stock
From
$45.20
Altech Corp
1D6.0
1D6.0
In Stock
From
$4.77
Altech Corp
1D60UM
1D60UM
In Stock
From
$26.26
Altech Corp
1D8UM
1D8UM
In Stock
From
$26.26
Altech Corp
1DU05
1DU05
Limited Stock
From
Get Price
Altech Corp
1DU1R
1DU1R
In Stock
From
$16.16
Altech Corp
1DU3R
1DU3R
In Stock
From
$16.16
Altech Corp
1DU40L
1DU40L
In Stock
From
$75.95
Altech Corp
1DU5R
1DU5R
In Stock
From
$14.09
Altech Corp
1DU8R
1DU8R
In Stock
From
$12.14
Altech Corp
1G10U
1G10U
In Stock
From
$21.92
Altech Corp
1G20U
1G20U
In Stock
From
$23.84
Altech Corp
1GU1
1GU1
In Stock
From
$11.87
Altech Corp
1GU20
1GU20
In Stock
From
$4.66
Altech Corp
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.