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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
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Manufacturer
Amperage
Voltage
NFX2C250
NFX2C250
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Siemens
250
600
NFX3C100
NFX3C100
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Siemens
100
600
NFX3C100L
NFX3C100L
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Siemens
100
600
NFX3C110
NFX3C110
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Siemens
110
600
NFX3C110L
NFX3C110L
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Siemens
110
600
NFX3C125
NFX3C125
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Siemens
125
600
NFX3C125L
NFX3C125L
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Siemens
125
600
NFX3C150
NFX3C150
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Siemens
150
600
NFX3C150L
NFX3C150L
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Siemens
150
600
NFX3C175
NFX3C175
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Siemens
175
600
NFX3C175L
NFX3C175L
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Siemens
175
600
NFX3C200
NFX3C200
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Siemens
200
600
NFX3C200L
NFX3C200L
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Siemens
200
600
NFX3C225
NFX3C225
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Siemens
225
600
NFX3C225L
NFX3C225L
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Siemens
225
600
NFX3C250
NFX3C250
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Siemens
250
600
NFX3C250L
NFX3C250L
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Siemens
250
600
NFX3D100
NFX3D100
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Siemens
100
600
NFX3D100L
NFX3D100L
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Siemens
100
600
NFX3D150
NFX3D150
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Siemens
150
600
NFX3D150L
NFX3D150L
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Siemens
150
600
NFX3D250
NFX3D250
Limited Stock
From
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Siemens
250
600
NFX3D250L
NFX3D250L
Limited Stock
From
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Siemens
250
600
NFX3E100
NFX3E100
Limited Stock
From
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Siemens
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.