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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
KA3150WV
KA3150WV
Limited Stock
From
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Westinghouse
150
600
KA3175A
KA3175A
Limited Stock
From
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Westinghouse
175
600
KA3175SV
KA3175SV
Limited Stock
From
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Westinghouse
175
600
KA3175SWV
KA3175SWV
Limited Stock
From
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Westinghouse
175
600
KA3175V
KA3175V
Limited Stock
From
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Westinghouse
175
600
KA3175WV
KA3175WV
Limited Stock
From
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Westinghouse
175
600
KA3200A
KA3200A
Limited Stock
From
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Westinghouse
200
600
KA3200SV
KA3200SV
Limited Stock
From
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Westinghouse
200
600
KA3200SWV
KA3200SWV
Limited Stock
From
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Westinghouse
200
600
KA3200V
KA3200V
Limited Stock
From
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Westinghouse
200
600
KA3225A
KA3225A
Limited Stock
From
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Westinghouse
225
600
KA3225SV
KA3225SV
Limited Stock
From
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Westinghouse
225
600
KA3225SWV
KA3225SWV
Limited Stock
From
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Westinghouse
225
600
KA3225V
KA3225V
Limited Stock
From
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Westinghouse
225
600
KA3225WV
KA3225WV
Limited Stock
From
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Westinghouse
225
600
KB2070SV
KB2070SV
Limited Stock
From
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Westinghouse
70
600
KB2070V
KB2070V
Limited Stock
From
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Westinghouse
70
600
KB2070WBC
KB2070WBC
Limited Stock
From
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Westinghouse
70
600
KB2080WBC
KB2080WBC
Limited Stock
From
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Westinghouse
80
600
KB2090SV
KB2090SV
Limited Stock
From
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Westinghouse
90
600
KB2090V
KB2090V
Limited Stock
From
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Westinghouse
90
600
KB2090WBC
KB2090WBC
Limited Stock
From
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Westinghouse
90
600
KB2100SV
KB2100SV
Limited Stock
From
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Westinghouse
100
600
KB2100V
KB2100V
Limited Stock
From
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Westinghouse
100
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.