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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
MA2225SV
MA2225SV
Limited Stock
From
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Westinghouse
225
600
MA2225V
MA2225V
Limited Stock
From
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Westinghouse
225
600
MA2250SV
MA2250SV
Limited Stock
From
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Westinghouse
250
600
MA2250V
MA2250V
Limited Stock
From
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Westinghouse
250
600
MA2300SV
MA2300SV
Limited Stock
From
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Westinghouse
300
600
MA2300V
MA2300V
Limited Stock
From
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Westinghouse
300
600
MA2350SV
MA2350SV
Limited Stock
From
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Westinghouse
350
600
MA2350V
MA2350V
Limited Stock
From
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Westinghouse
350
600
MA2400SV
MA2400SV
Limited Stock
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Westinghouse
400
600
MA2400V
MA2400V
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Westinghouse
400
600
MA2450SV
MA2450SV
Limited Stock
From
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Westinghouse
450
600
MA2450V
MA2450V
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Westinghouse
450
600
MA2500SV
MA2500SV
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Westinghouse
500
600
MA2500V
MA2500V
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Westinghouse
500
600
MA2600SV
MA2600SV
Limited Stock
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Westinghouse
600
600
MA2600V
MA2600V
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Westinghouse
600
600
MA2700SV
MA2700SV
Limited Stock
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Westinghouse
700
600
MA2700V
MA2700V
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From
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Westinghouse
700
600
MA2800SV
MA2800SV
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Westinghouse
800
600
MA2800V
MA2800V
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Westinghouse
800
600
MA3125SV
MA3125SV
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Westinghouse
125
600
MA3125V
MA3125V
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From
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Westinghouse
125
600
MA3150SV
MA3150SV
Limited Stock
From
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Westinghouse
150
600
MA3150V
MA3150V
Limited Stock
From
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Westinghouse
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.