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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
Amperage
Voltage
1C1UR
1C1UR
In Stock
From
$14.33
Altech Corp
1
480
1C6UL
1C6UL
In Stock
From
$27.27
Altech Corp
-
-
1CU63R
1CU63R
In Stock
From
$10.61
Altech Corp
63
480
1DU15R
1DU15R
In Stock
From
$10.91
Altech Corp
15
480
2B16UM
2B16UM
In Stock
From
$46.27
Altech Corp
16
480
2C05UL
2C05UL
In Stock
From
$54.55
Altech Corp
5
480
2C1UL
2C1UL
In Stock
From
$54.55
Altech Corp
1
480
2C4UL
2C4UL
In Stock
From
$54.55
Altech Corp
4
480
2CU6L
2CU6L
In Stock
From
$43.64
Altech Corp
6
480
2CU6M
2CU6M
In Stock
From
$32.73
Altech Corp
6
480
2D20UM
2D20UM
In Stock
From
$50.78
Altech Corp
20
480
2DU2L
2DU2L
In Stock
From
$49.21
Altech Corp
-
-
3B20UM
3B20UM
In Stock
From
$73.36
Altech Corp
20
480
3CU15R
3CU15R
In Stock
From
$32.73
Altech Corp
15
480
3DU2L
3DU2L
In Stock
From
$81.82
Altech Corp
2
480
3DU50L
3DU50L
In Stock
From
$87.27
Altech Corp
50
480
1B3UM
1B3UM
In Stock
From
$16.34
Altech Corp
-
-
1BU10
1BU10
In Stock
From
$27.09
Altech Corp
-
-
1BU40R
1BU40R
In Stock
From
$11.04
Altech Corp
-
-
1C05UL
1C05UL
In Stock
From
$57.82
Altech Corp
-
-
1C10UM
1C10UM
In Stock
From
$16.14
Altech Corp
-
-
1C40UL
1C40UL
In Stock
From
$27.42
Altech Corp
-
-
1C4DL
1C4DL
In Stock
From
$54.54
Altech Corp
-
-
1C63DL
1C63DL
In Stock
From
$32.67
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.