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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
NPH3U160
NPH3U160
Limited Stock
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Siemens
1600
600
NPH3X120
NPH3X120
Limited Stock
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Siemens
1200
600
NPH3X160
NPH3X160
Limited Stock
From
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Siemens
1600
600
NPH4N120
NPH4N120
Limited Stock
From
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Siemens
1200
600
NPH4N160
NPH4N160
Limited Stock
From
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Siemens
1600
600
NPH4P120
NPH4P120
Limited Stock
From
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Siemens
1200
600
NPH4P160
NPH4P160
Limited Stock
From
Get Price
Siemens
1600
600
NPH4U120
NPH4U120
Limited Stock
From
Get Price
Siemens
1200
600
NPH4U160
NPH4U160
Limited Stock
From
Get Price
Siemens
1600
600
NPH4X120
NPH4X120
Limited Stock
From
Get Price
Siemens
1200
600
NPH4X160
NPH4X160
Limited Stock
From
Get Price
Siemens
1600
600
NPX3C140
NPX3C140
Limited Stock
From
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Siemens
1400
600
NPX3C160
NPX3C160
Limited Stock
From
Get Price
Siemens
1600
600
NPX3P120
NPX3P120
Limited Stock
From
Get Price
Siemens
1200
600
NPX3P160
NPX3P160
Limited Stock
From
Get Price
Siemens
1600
600
NPY3C140
NPY3C140
Limited Stock
From
Get Price
Siemens
1400
600
NPY3C160
NPY3C160
Limited Stock
From
Get Price
Siemens
1600
600
NPY3D120
NPY3D120
Limited Stock
From
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Siemens
1200
600
NPY3D160
NPY3D160
Limited Stock
From
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Siemens
1600
600
NPY3E120
NPY3E120
Limited Stock
From
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Siemens
1200
600
NPY3E140
NPY3E140
Limited Stock
From
Get Price
Siemens
1400
600
NPY3E160
NPY3E160
Limited Stock
From
Get Price
Siemens
1600
600
NPY3N120
NPY3N120
Limited Stock
From
Get Price
Siemens
1200
600
NPY3N160
NPY3N160
Limited Stock
From
Get Price
Siemens
1600
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.