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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
1G30UM
1G30UM
In Stock
From
$21.00
Altech Corp
1GU05
1GU05
In Stock
From
$10.38
Altech Corp
1GU08
1GU08
In Stock
From
$11.43
Altech Corp
1GU10
1GU10
In Stock
From
$11.65
Altech Corp
1GU15
1GU15
In Stock
From
$8.21
Altech Corp
1GU25
1GU25
In Stock
From
$9.09
Altech Corp
1GU3
1GU3
In Stock
From
$52.19
Altech Corp
1GU4
1GU4
In Stock
From
$13.61
Altech Corp
1GU50
1GU50
In Stock
From
$18.74
Altech Corp
1GU6
1GU6
In Stock
From
$12.95
Altech Corp
2BU10R
2BU10R
In Stock
From
$29.74
Altech Corp
2BU25R
2BU25R
In Stock
From
$23.35
Altech Corp
2C10UM
2C10UM
In Stock
From
$81.87
Altech Corp
2C2UL
2C2UL
In Stock
From
$92.20
Altech Corp
2C5UL
2C5UL
In Stock
From
$62.13
Altech Corp
2C63UL
2C63UL
In Stock
From
$56.25
Altech Corp
2CU1
2CU1
In Stock
From
$16.28
Altech Corp
2CU10
2CU10
In Stock
From
$7.07
Altech Corp
2CU2L
2CU2L
In Stock
From
$53.53
Altech Corp
2CU40L
2CU40L
In Stock
From
$62.17
Altech Corp
2CU4R
2CU4R
In Stock
From
$31.31
Altech Corp
2CU6R
2CU6R
In Stock
From
$31.31
Altech Corp
2D4UL
2D4UL
In Stock
From
$94.76
Altech Corp
2D4UR
2D4UR
In Stock
From
$36.36
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.