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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.
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Part Number
PRICE
Manufacturer
Amperage
Voltage
WMZT3C25T
WMZT3C25T
Limited Stock
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Eaton
25
480
WMZT3C30T
WMZT3C30T
Limited Stock
From
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Eaton
30
480
WMZT3C32T
WMZT3C32T
Limited Stock
From
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Eaton
32
480
WMZT3C40T
WMZT3C40T
Limited Stock
From
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Eaton
40
480
WMZT3D01T
WMZT3D01T
Limited Stock
From
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Eaton
1
480
WMZT3D02T
WMZT3D02T
Limited Stock
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Eaton
2
480
WMZT3D04T
WMZT3D04T
Limited Stock
From
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Eaton
4
480
WMZT3D05T
WMZT3D05T
Limited Stock
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Eaton
5
480
WMZT3D06T
WMZT3D06T
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Eaton
6
480
WMZT3D07T
WMZT3D07T
Limited Stock
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Eaton
7
480
WMZT3D08T
WMZT3D08T
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Eaton
8
480
WMZT3D10T
WMZT3D10T
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Eaton
10
480
WMZT3D13T
WMZT3D13T
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Eaton
13
480
WMZT3D16T
WMZT3D16T
Limited Stock
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Eaton
16
480
WMZT3D20T
WMZT3D20T
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Eaton
20
480
WMZT3D40T
WMZT3D40T
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From
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Eaton
40
480
6622C87G28
6622C87G28
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Westinghouse
225
600
BRD2302115
BRD2302115
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Eaton
-
240
CKDPV4125W
CKDPV4125W
Limited Stock
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Eaton
125
1000
CKDPV4300W
CKDPV4300W
Limited Stock
From
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Eaton
300
1000
E2JM3250DW
E2JM3250DW
Limited Stock
From
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Westinghouse
250
1000
E2JM3250DWS10
E2JM3250DWS10
Limited Stock
From
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Eaton
250
1000
E2K2400MGW
E2K2400MGW
Limited Stock
From
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Cutler Hammer
400
600
E2K3400MAWS09
E2K3400MAWS09
Limited Stock
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Cutler Hammer
400
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.