Portfolio Category: Circuit Breakers

National Circuit Breaker stocks a wide variety of low voltage air circuit breakers from 600 volt to 6000 amps dating back to the 1940s. Manufactures include but not limited to the following: ABB Cutler Hammer ITE Westinghouse Siemens Square D General Electric Federal Pioneer Roller Smith Federal Pacific Sylvania Allis Chalmers

NCB stocks a wide variety of medium voltage circuit breakers for both air and vacuum dating back to the 1940s. Manufactures include but not limited to the following: ABB General Electric ITE Allis Chalmers Square D Federal Pacific Siemens Westinghouse

We stock new, surplus, obsolete and reconditioned industrial-class molded case circuit breakers (mccb) made by every major Manufacturer including ABB, Cutler Hammer, Federal Pacific, General Electric, ITE,  Siemens, Square D and Westinghouse. Industrial-class molded case circuit breakers are commonly utilized in panelboards, switchboards, motor control centers, control panels and combination starters. Whether it's a 100A…

We are insulated case circuit breaker experts... we've worked with them for decades, and we're familiar with virtually every manufacturer, style and type. With our extensive knowledge and experience, we can assist you in determining whether it's best to repair, replace, upgrade or retrofit your insulated case circuit breaker. Not only do we have an…