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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
FB1045SL
FB1045SL
Limited Stock
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Cutler Hammer
45
277
FB1050
FB1050
Limited Stock
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Cutler Hammer
50
277
FB1050L
FB1050L
Limited Stock
From
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Westinghouse
50
277
FB1050S
FB1050S
Limited Stock
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Cutler Hammer
50
277
FB1050SL
FB1050SL
Limited Stock
From
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Cutler Hammer
50
277
FB1060
FB1060
Limited Stock
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Westinghouse
60
277
FB1060L
FB1060L
Limited Stock
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Cutler Hammer
60
277
FB1060S
FB1060S
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Westinghouse
60
277
FB1060SL
FB1060SL
Limited Stock
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Westinghouse
60
277
FB1070
FB1070
Limited Stock
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Cutler Hammer
70
277
FB1070L
FB1070L
Limited Stock
From
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Westinghouse
70
277
FB1070S
FB1070S
Limited Stock
From
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Westinghouse
70
277
FB1070SL
FB1070SL
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Westinghouse
70
277
FB1080
FB1080
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Cutler Hammer
80
277
FB1080L
FB1080L
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Westinghouse
80
277
FB1080S
FB1080S
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Westinghouse
80
277
FB1080SL
FB1080SL
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Westinghouse
80
277
FB1090
FB1090
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Westinghouse
90
277
FB1090L
FB1090L
Limited Stock
From
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Westinghouse
90
277
FB1090S
FB1090S
Limited Stock
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Cutler Hammer
90
277
FB1090SL
FB1090SL
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Westinghouse
90
277
FB1100
FB1100
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Westinghouse
100
277
FB1100L
FB1100L
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From
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Westinghouse
100
277
FB1100S
FB1100S
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From
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Westinghouse
100
277
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.