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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
3RV1421-1DA10
3RV1421-1DA10
In Stock
From
$113.19
Siemens
-
-
3RV1421-4BA10
3RV1421-4BA10
In Stock
From
$83.84
Siemens
-
-
3RV1431-4FA10
3RV1431-4FA10
In Stock
From
$148.34
Siemens
-
-
3RV1742-5JD10
3RV1742-5JD10
In Stock
From
$1,163.72
Siemens
-
-
3RV1821-1JD10
3RV1821-1JD10
In Stock
From
$145.84
Siemens
-
-
3RV1936-3AP0
3RV1936-3AP0
In Stock
From
$910.19
Siemens
-
-
3RV2111-1JA10
3RV2111-1JA10
Limited Stock
From
Get Price
Siemens
-
-
3RV2311-1JC20
3RV2311-1JC20
In Stock
From
$110.60
Siemens
-
-
3VA4160-6ED24-0AA0
3VA4160-6ED24-0AA0
In Stock
From
$483.96
Siemens
125
-
3VA4180-6ED34-0AA0
3VA4180-6ED34-0AA0
In Stock
From
$339.93
Siemens
80
480
3VA5215-6EF31-0AA0
3VA5215-6EF31-0AA0
In Stock
From
$1,980.00
Siemens
250
-
3VA9132-0WA00
3VA9132-0WA00
In Stock
From
$33.94
Siemens
-
-
3VA9157-0FK21
3VA9157-0FK21
In Stock
From
$290.52
Siemens
-
-
3VF1231-1DD11-0AA0
3VF1231-1DD11-0AA0
In Stock
From
$133.65
Siemens
-
-
3VF1231-1DJ21-0AA0
3VF1231-1DJ21-0AA0
In Stock
From
$60.70
Siemens
-
-
3VF3111-1BN41-0AA0
3VF3111-1BN41-0AA0
Limited Stock
From
Get Price
Siemens
-
-
3VF3111-1BS41-0AA0
3VF3111-1BS41-0AA0
In Stock
From
$1,182.44
Siemens
-
-
3VF3111-2BQ41-0AC1
3VF3111-2BQ41-0AC1
In Stock
From
$168.17
Siemens
-
-
3VF3112-1MN41-0AA0
3VF3112-1MN41-0AA0
In Stock
From
$600.39
Siemens
-
-
3VF3131-1FL41-0AA0
3VF3131-1FL41-0AA0
In Stock
From
$115.22
Siemens
-
-
3VF3131-1FN41-1GN1
3VF3131-1FN41-1GN1
In Stock
From
$297.99
Siemens
-
-
3VF3131-1FS41-0AA0
3VF3131-1FS41-0AA0
In Stock
From
$1,188.97
Siemens
-
-
3VF3211-1BW41-0AA0
3VF3211-1BW41-0AA0
In Stock
From
$1,402.46
Siemens
-
-
3VF4231-1DH41-0AA0
3VF4231-1DH41-0AA0
In Stock
From
$1,159.20
Siemens
-
-
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.