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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
2DU15L
2DU15L
In Stock
From
$48.14
Altech Corp
15
480
2DU2R
2DU2R
In Stock
From
$18.62
Altech Corp
2
480
2G5UM
2G5UM
In Stock
From
$29.81
Altech Corp
5
480
3DU6R
3DU6R
In Stock
From
$26.08
Altech Corp
6
480
1B1UM
1B1UM
In Stock
From
$26.26
Altech Corp
-
-
1CU10
1CU10
In Stock
From
$10.79
Altech Corp
-
-
2GU5
2GU5
In Stock
From
$23.04
Altech Corp
-
-
3G20UM
3G20UM
In Stock
From
$106.65
Altech Corp
-
-
1D10UL
1D10UL
In Stock
From
$28.96
Altech Corp
10
277
2C20DL
2C20DL
In Stock
From
$101.33
Altech Corp
20
480
1C16UL
1C16UL
In Stock
From
$21.07
Altech Corp
-
-
1C20UL
1C20UL
In Stock
From
$42.42
Altech Corp
-
-
1G10UM
1G10UM
In Stock
From
$17.76
Altech Corp
-
-
2C32UL
2C32UL
In Stock
From
$91.14
Altech Corp
-
-
2C60UL
2C60UL
In Stock
From
$42.84
Altech Corp
-
-
2C6UL
2C6UL
In Stock
From
$58.62
Altech Corp
-
-
2DU1L
2DU1L
In Stock
From
$61.99
Altech Corp
-
-
2DU5L
2DU5L
In Stock
From
$54.55
Altech Corp
-
-
3CU20R
3CU20R
In Stock
From
$45.50
Altech Corp
-
-
1B16UM
1B16UM
In Stock
From
$21.22
Altech Corp
16
277
1B20UM
1B20UM
In Stock
From
$21.22
Altech Corp
20
277
1C03UL
1C03UL
In Stock
From
$27.27
Altech Corp
3
480
1C12UL
1C12UL
In Stock
From
$35.83
Altech Corp
12
480
1C1UL
1C1UL
In Stock
From
$27.27
Altech Corp
1
480
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.