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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
3VA4120-4ED34-0AA0
3VA4120-4ED34-0AA0
In Stock
From
$216.39
Siemens
125
480
3VA4160-4ED34-0AA0
3VA4160-4ED34-0AA0
In Stock
From
$242.48
Siemens
125
-
3VA4195-4ED34-0AA0
3VA4195-4ED34-0AA0
In Stock
From
$631.07
Siemens
125
600
3VA4195-6ED34-0AA0
3VA4195-6ED34-0AA0
In Stock
From
$498.41
Siemens
125
-
3VA5335-5EC31-0AA0
3VA5335-5EC31-0AA0
In Stock
From
$1,861.62
Siemens
400
600
3VA5450-5EC31-0AA0
3VA5450-5EC31-0AA0
In Stock
From
$3,109.10
Siemens
600
600
3VF1231-1DK11-0AA0
3VF1231-1DK11-0AA0
In Stock
From
$212.55
Siemens
63
690
3VF2213-0FG41-0AA0
3VF2213-0FG41-0AA0
In Stock
From
$123.32
Siemens
32
400
3VF2213-0FS41-0AA0
3VF2213-0FS41-0AA0
In Stock
From
$63.00
Siemens
100
400
3VF2217-0EC41-0AA0
3VF2217-0EC41-0AA0
In Stock
From
$103.62
Siemens
16
400
3VU1300-1NJ00
3VU1300-1NJ00
In Stock
From
$352.05
Siemens
60
690
5SY4318-7
5SY4318-7
In Stock
From
$113.37
Siemens
15
400
BF120H
BF120H
In Stock
From
$155.14
Siemens
20
120
BF230
BF230
In Stock
From
$125.90
Siemens
30
240
E43B020
E43B020
In Stock
From
$118.68
Siemens
20
480
E43B070
E43B070
In Stock
From
$227.88
Siemens
70
480
E43B100
E43B100
In Stock
From
$197.57
Siemens
100
480
EH1B020
EH1B020
In Stock
From
$23.83
Siemens
20
277
EH2B070
EH2B070
In Stock
From
$769.54
ITE
70
480
EH3B015
EH3B015
In Stock
From
$183.54
Siemens
15
480
EQ8681
EQ8681
In Stock
From
$107.12
Siemens
100
240
EQ8682
EQ8682
In Stock
From
$185.16
Siemens
125
240
EQ8693
EQ8693
In Stock
From
$161.40
Siemens
150
240
EQ8695
EQ8695
In Stock
From
$238.40
Siemens
200
240
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.