Insulated Case Circuit Breakers

The industry's leading line of medium to large size circuit breakers, featuring the Masterpact® NW/NT series, which leads the industry with higher interrupting ratings, smaller footprint, and more accessories, including our exclusive "P" trip unit, which provides built-in PowerLogic® power monitoring capabilities. These circuit breakers are commonly used in UL891 switchboard applications, serving large industrial and large commercial facilities.

• 200 A to 6000 A (highest ampere ratings in the industry)
• 3- and 4-pole
• Used in systems up to 600 Vac and 500 Vdc (some designs offer 1000 Vac and 1000 Vdc)

Masterpact® NW Series Circuit Breakers
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