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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
FB1100SL
FB1100SL
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Westinghouse
100
277
FB2010S
FB2010S
Limited Stock
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Westinghouse
10
600
FB2010SL
FB2010SL
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Westinghouse
10
600
FB2025S
FB2025S
Limited Stock
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Westinghouse
25
600
FB2025SL
FB2025SL
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Cutler Hammer
25
600
FB2035S
FB2035S
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From
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Westinghouse
35
600
FB2035SL
FB2035SL
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Westinghouse
35
600
FB2045S
FB2045S
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Westinghouse
45
600
FB2045SL
FB2045SL
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Cutler Hammer
45
600
FB2060S
FB2060S
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Westinghouse
60
600
FB2060SL
FB2060SL
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Cutler Hammer
60
600
FB2070S
FB2070S
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Cutler Hammer
70
600
FB2070SL
FB2070SL
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Cutler Hammer
70
600
FB2080S
FB2080S
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Cutler Hammer
80
600
FB2080SL
FB2080SL
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Westinghouse
80
600
FB2090S
FB2090S
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Westinghouse
90
600
FB2090SL
FB2090SL
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Westinghouse
90
600
FB2100LK
FB2100LK
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From
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Westinghouse
100
600
FB21800MRL
FB21800MRL
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Westinghouse
150
600
FB3010SL
FB3010SL
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From
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Westinghouse
10
600
FB3100LK
FB3100LK
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From
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Westinghouse
100
600
FB3100LKC
FB3100LKC
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From
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Westinghouse
100
600
FB3150LKC
FB3150LKC
Limited Stock
From
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Westinghouse
150
600
FB3150SN
FB3150SN
Limited Stock
From
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Cutler Hammer
150
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.