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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
FB4110
FB4110
Limited Stock
From
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Westinghouse
110
600
FB4110L
FB4110L
Limited Stock
From
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Cutler Hammer
110
600
FB4125
FB4125
Limited Stock
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Westinghouse
125
600
FB4125L
FB4125L
Limited Stock
From
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Westinghouse
125
600
FB4150
FB4150
Limited Stock
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Westinghouse
150
600
FB4150L
FB4150L
Limited Stock
From
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Westinghouse
150
600
FB4150N
FB4150N
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Westinghouse
150
600
FD4015V
FD4015V
Limited Stock
From
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Westinghouse
15
600
FD4015VL
FD4015VL
Limited Stock
From
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Westinghouse
15
600
FD4020V
FD4020V
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Cutler Hammer
20
600
FD4020VL
FD4020VL
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From
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Eaton
20
600
FD4025E
FD4025E
Limited Stock
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Cutler Hammer
25
600
FD4025V
FD4025V
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Eaton
25
600
FD4025VL
FD4025VL
Limited Stock
From
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Westinghouse
25
600
FD4030V
FD4030V
Limited Stock
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Westinghouse
30
600
FD4030VL
FD4030VL
Limited Stock
From
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Westinghouse
30
600
FD403535V
FD403535V
Limited Stock
From
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Cutler Hammer
30
600
FD4035E
FD4035E
Limited Stock
From
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Eaton
35
600
FD4035V
FD4035V
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From
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Eaton
35
600
FD4035VL
FD4035VL
Limited Stock
From
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Westinghouse
35
600
FD4040V
FD4040V
Limited Stock
From
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Westinghouse
40
600
FD4040VL
FD4040VL
Limited Stock
From
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Cutler Hammer
40
600
FD4045E
FD4045E
Limited Stock
From
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Westinghouse
45
600
FD4045L
FD4045L
Limited Stock
From
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Eaton
45
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.