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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
WMZT3C02
WMZT3C02
In Stock
From
$149.99
Eaton
2
480
WMZT3C03
WMZT3C03
In Stock
From
$92.19
Eaton
3
480
WMZT3C04
WMZT3C04
In Stock
From
$305.77
Eaton
4
480
WMZT3C06
WMZT3C06
In Stock
From
$77.42
Eaton
6
480
WMZT3C16
WMZT3C16
In Stock
From
$48.94
Eaton
16
480
WMZT3C30
WMZT3C30
In Stock
From
$252.50
Eaton
30
480
WMZT3D02
WMZT3D02
In Stock
From
$420.62
Eaton
2
480
WMZT3D03
WMZT3D03
In Stock
From
$189.97
Eaton
3
480
WMZT3D04
WMZT3D04
In Stock
From
$96.54
Eaton
4
480
WMZT3D06
WMZT3D06
In Stock
From
$109.08
Eaton
6
480
WMZT3D08
WMZT3D08
In Stock
From
$155.92
Eaton
8
480
WMZT3D10
WMZT3D10
In Stock
From
$48.14
Eaton
10
480
WMZT3D13
WMZT3D13
In Stock
From
$179.14
Eaton
13
480
WMZT3D16
WMZT3D16
In Stock
From
$101.92
Eaton
16
480
WMZT3D20
WMZT3D20
In Stock
From
$143.90
Eaton
20
480
WMZT3D25
WMZT3D25
In Stock
From
$125.59
Eaton
25
480
WMZT3D40
WMZT3D40
In Stock
From
$144.14
Eaton
40
480
XF631015
XF631015
In Stock
From
$822.01
Federal Pacific
15
600
XF631100
XF631100
In Stock
From
$2,959.00
Federal Pacific
100
600
XJL434200
XJL434200
In Stock
From
$880.29
Federal Pacific
200
600
XJL434400
XJL434400
In Stock
From
$2,430.34
Federal Pacific
400
600
XJL632300
XJL632300
In Stock
From
$2,025.04
Federal Pacific
300
600
XM433400
XM433400
In Stock
From
$4,815.95
Federal Pacific
400
480
XM633225
XM633225
In Stock
From
$1,633.78
Federal Pacific
225
600
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.