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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
NPG3C160
NPG3C160
Limited Stock
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Siemens
1600
600
NPG3D160
NPG3D160
Limited Stock
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Siemens
1600
600
NPG3E160
NPG3E160
Limited Stock
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Siemens
1600
600
NPG3N160
NPG3N160
Limited Stock
From
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Siemens
1600
600
NPG3P160
NPG3P160
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Siemens
1600
600
NPG3U160
NPG3U160
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Siemens
1600
600
NPG3X160
NPG3X160
Limited Stock
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Siemens
1600
600
NPG4F160
NPG4F160
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Siemens
1600
600
NPH3B120
NPH3B120
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Siemens
1200
600
NPH3B140
NPH3B140
Limited Stock
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Siemens
1400
600
NPH3B160
NPH3B160
Limited Stock
From
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Siemens
1600
600
NPH3C120
NPH3C120
Limited Stock
From
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Siemens
1200
600
NPH3C140
NPH3C140
Limited Stock
From
Get Price
Siemens
1400
600
NPH3C160
NPH3C160
Limited Stock
From
Get Price
Siemens
1600
600
NPH3D120
NPH3D120
Limited Stock
From
Get Price
Siemens
1200
600
NPH3D160
NPH3D160
Limited Stock
From
Get Price
Siemens
1600
600
NPH3E120
NPH3E120
Limited Stock
From
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Siemens
1200
600
NPH3E140
NPH3E140
Limited Stock
From
Get Price
Siemens
1400
600
NPH3E160
NPH3E160
Limited Stock
From
Get Price
Siemens
1600
600
NPH3N120
NPH3N120
Limited Stock
From
Get Price
Siemens
1200
600
NPH3N160
NPH3N160
Limited Stock
From
Get Price
Siemens
1600
600
NPH3P120
NPH3P120
Limited Stock
From
Get Price
Siemens
1200
600
NPH3P160
NPH3P160
Limited Stock
From
Get Price
Siemens
1600
600
NPH3U120
NPH3U120
Limited Stock
From
Get Price
Siemens
1200
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.