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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
MA3175SV
MA3175SV
Limited Stock
From
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Westinghouse
175
600
MA3175V
MA3175V
Limited Stock
From
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Westinghouse
175
600
MA3200E
MA3200E
Limited Stock
From
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Westinghouse
200
600
MA3200SV
MA3200SV
Limited Stock
From
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Westinghouse
200
600
MA3200V
MA3200V
Limited Stock
From
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Westinghouse
200
600
MA3225E
MA3225E
Limited Stock
From
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Westinghouse
225
600
MA3225SV
MA3225SV
Limited Stock
From
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Westinghouse
225
600
MA3225V
MA3225V
Limited Stock
From
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Westinghouse
225
600
MA3250E
MA3250E
Limited Stock
From
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Westinghouse
250
600
MA3250SV
MA3250SV
Limited Stock
From
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Westinghouse
250
600
MA3250V
MA3250V
Limited Stock
From
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Westinghouse
250
600
MA3300E
MA3300E
Limited Stock
From
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Westinghouse
300
600
MA3300SV
MA3300SV
Limited Stock
From
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Westinghouse
300
600
MA3300V
MA3300V
Limited Stock
From
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Westinghouse
300
600
MA3350SV
MA3350SV
Limited Stock
From
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Westinghouse
350
600
MA3350V
MA3350V
Limited Stock
From
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Westinghouse
350
600
MA3400E
MA3400E
Limited Stock
From
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Westinghouse
400
600
MA3400SV
MA3400SV
Limited Stock
From
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Westinghouse
400
600
MA3400V
MA3400V
Limited Stock
From
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Westinghouse
400
600
MA3450SV
MA3450SV
Limited Stock
From
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Westinghouse
450
600
MA3450V
MA3450V
Limited Stock
From
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Westinghouse
450
600
MA3500SV
MA3500SV
Limited Stock
From
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Westinghouse
500
600
MA3500V
MA3500V
Limited Stock
From
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Westinghouse
500
600
MA3600SV
MA3600SV
Limited Stock
From
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Westinghouse
600
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.