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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
2DNU3
2DNU3
In Stock
From
$14.52
Altech Corp
2DU15
2DU15
In Stock
From
$17.07
Altech Corp
2DU6R
2DU6R
In Stock
From
$21.00
Altech Corp
2G10UM
2G10UM
In Stock
From
$101.03
Altech Corp
2G32UM
2G32UM
In Stock
From
$42.42
Altech Corp
2GU08
2GU08
In Stock
From
$16.11
Altech Corp
2GU10
2GU10
In Stock
From
$10.49
Altech Corp
2GU3.5
2GU3.5
In Stock
From
$12.77
Altech Corp
2GU4
2GU4
In Stock
From
$18.79
Altech Corp
2Z16UM
2Z16UM
In Stock
From
$63.89
Altech Corp
3B20UR
3B20UR
In Stock
From
$37.64
Altech Corp
3C10UM
3C10UM
In Stock
From
$88.38
Altech Corp
3C12UL
3C12UL
In Stock
From
$65.74
Altech Corp
3C4UM
3C4UM
Limited Stock
From
Get Price
Altech Corp
3CU10
3CU10
In Stock
From
$31.25
Altech Corp
3CU16
3CU16
In Stock
From
$18.99
Altech Corp
3CU2
3CU2
In Stock
From
$18.27
Altech Corp
3CU20
3CU20
In Stock
From
$20.49
Altech Corp
3CU20L
3CU20L
In Stock
From
$40.75
Altech Corp
3CU25
3CU25
In Stock
From
$47.47
Altech Corp
3CU25L
3CU25L
In Stock
From
$51.51
Altech Corp
3CU32
3CU32
In Stock
From
$24.40
Altech Corp
3CU3L
3CU3L
In Stock
From
$79.64
Altech Corp
3CU40L
3CU40L
In Stock
From
$85.85
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.