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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
FG3030A12S03
FG3030A12S03
Limited Stock
From
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Westinghouse
30
600
FG3035
FG3035
Limited Stock
From
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Cutler Hammer
35
600
FG3035A12S03
FG3035A12S03
Limited Stock
From
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Westinghouse
35
600
FG3040A12S03
FG3040A12S03
Limited Stock
From
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Eaton
40
600
FG3045
FG3045
Limited Stock
From
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Westinghouse
45
600
FG3045A12S03
FG3045A12S03
Limited Stock
From
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Westinghouse
45
600
FG3050
FG3050
Limited Stock
From
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Eaton
50
600
FG3050A12S03
FG3050A12S03
Limited Stock
From
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Eaton
50
600
FG3060A12S03
FG3060A12S03
Limited Stock
From
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Westinghouse
60
600
FG3060S17
FG3060S17
Limited Stock
From
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Westinghouse
60
600
FG3070A12S03
FG3070A12S03
Limited Stock
From
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Westinghouse
70
600
FG3080A12S03
FG3080A12S03
Limited Stock
From
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Westinghouse
80
600
FG3090A12S03
FG3090A12S03
Limited Stock
From
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Eaton
90
600
FG3090S18
FG3090S18
Limited Stock
From
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Westinghouse
90
600
FG3110
FG3110
Limited Stock
From
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Westinghouse
110
600
FG3110S01
FG3110S01
Limited Stock
From
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Eaton
110
600
FG3125A12S03
FG3125A12S03
Limited Stock
From
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Eaton
125
600
FG3125S01
FG3125S01
Limited Stock
From
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Cutler Hammer
125
600
FG3125S02
FG3125S02
Limited Stock
From
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Westinghouse
125
600
FG3125S18
FG3125S18
Limited Stock
From
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Westinghouse
125
600
FG3150A12S03
FG3150A12S03
Limited Stock
From
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Westinghouse
150
600
FG3150S02
FG3150S02
Limited Stock
From
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Westinghouse
150
600
FG3150S17
FG3150S17
Limited Stock
From
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Eaton
150
600
FG3175
FG3175
Limited Stock
From
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Cutler Hammer
175
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.