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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
NFG2B175B
NFG2B175B
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Siemens
175
600
NFG2B175L
NFG2B175L
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Siemens
175
600
NFG2B200
NFG2B200
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Siemens
200
600
NFG2B200B
NFG2B200B
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Siemens
200
600
NFG2B200L
NFG2B200L
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Siemens
200
600
NFG2B225
NFG2B225
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Siemens
225
600
NFG2B225B
NFG2B225B
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Siemens
225
600
NFG2B250
NFG2B250
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Siemens
250
600
NFG2B250B
NFG2B250B
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Siemens
250
600
NFG2B250L
NFG2B250L
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Siemens
250
600
NFG2C100
NFG2C100
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Siemens
100
600
NFG2C100B
NFG2C100B
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Siemens
100
600
NFG2C100L
NFG2C100L
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Siemens
100
600
NFG2C110
NFG2C110
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Siemens
110
600
NFG2C110B
NFG2C110B
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Siemens
110
600
NFG2C110L
NFG2C110L
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Siemens
110
600
NFG2C125
NFG2C125
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Siemens
125
600
NFG2C125B
NFG2C125B
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Siemens
125
600
NFG2C125L
NFG2C125L
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Siemens
125
600
NFG2C150
NFG2C150
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Siemens
150
600
NFG2C150B
NFG2C150B
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Siemens
150
600
NFG2C150L
NFG2C150L
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Siemens
150
600
NFG2C175
NFG2C175
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Siemens
175
600
NFG2C175B
NFG2C175B
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From
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Siemens
175
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.