1. Home / 
  2. All Categories / 
  3. Circuit Breaker / 

    4. Molded Case Circuit Breaker

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
FY12020A
FY12020A
In Stock
From
$55.33
Square D
20
120
GB2-CD21
GB2-CD21
Limited Stock
From
Get Price
Schneider Electric
16
277
GB2CB05
GB2CB05
In Stock
From
$41.10
Schneider Electric
-
277
GB2CB22
GB2CB22
In Stock
From
$7.45
Schneider Electric
20
277
GB2CD05
GB2CD05
In Stock
From
$40.17
Schneider Electric
-
277
GB2CD08
GB2CD08
In Stock
From
$74.99
Schneider Electric
3
277
GB2CD10
GB2CD10
Limited Stock
From
Get Price
Schneider Electric
5
277
GB2CD14
GB2CD14
In Stock
From
$33.72
Schneider Electric
8
277
GB2CD20
GB2CD20
In Stock
From
$41.16
Schneider Electric
12
277
GB2DB14
GB2DB14
Limited Stock
From
Get Price
Schneider Electric
8
277
HRL36030M71
HRL36030M71
In Stock
From
$822.73
Square D
30
600
HRL36100M73
HRL36100M73
In Stock
From
$830.91
Schneider Electric
100
600
HRL36150M74
HRL36150M74
In Stock
From
$1,323.90
Square D
150
600
JLL36250LV
JLL36250LV
In Stock
From
$3,764.64
Schneider Electric
250
600
JRL36250M75
JRL36250M75
In Stock
From
$1,197.56
Square D
100
600
KA36000MT1021
KA36000MT1021
In Stock
From
$912.34
Square D
250
600
KIB36150
KIB36150
In Stock
From
$1,871.91
Square D
150
600
LAF3640022M
LAF3640022M
In Stock
From
$130.42
Schneider Electric
400
600
LV428100
LV428100
In Stock
From
$223.28
Schneider Electric
80
690
LV428102
LV428102
In Stock
From
$203.53
Schneider Electric
25
690
LV428103
LV428103
In Stock
From
$203.85
Schneider Electric
12
690
LV428104
LV428104
In Stock
From
$203.08
Schneider Electric
6
690
LV429052
LV429052
Limited Stock
From
Get Price
Schneider Electric
-
-
LV429053
LV429053
In Stock
From
$70.70
Schneider Electric
-
-
Popular Molded Case Circuit Breaker Manufacturers
Eaton
Square D
ABB
Siemens

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.