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Westinghouse NB31000T - Thermal Magnetic Trip Unit 1000A 600V 3-Pole

Westinghouse
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Westinghouse NB31000T is a thermal magnetic trip unit designed for overcurrent protection in industrial power distribution systems. It operates at a voltage rating of 600V and supports a current rating of 1000A, with LI (Long-Time and Instantaneous) protection functions. This 3-pole unit weighs 4 lb and is compatible with NB, HNB, and NBY circuit breaker frames. It meets industry standards for reliable performance in heavy-duty electrical environments. Typical applications include protecting feeders and main circuits in manufacturing plants, commercial buildings, and utility substations.

Key Features & Specifications
  • Type: Thermal Magnetic Trip Unit
  • Voltage Rating: 600V
  • Current Rating: 1000A
  • Poles: 3
  • Functions: LI - Long-Time and Instantaneous
  • Protection: Thermal Magnetic
  • Compatible Frames: NB, HNB, NBY
  • Weight: 4 lb
  • Item Subcategory: Trip Units & Programmers
  • Family: NB Series
  • Type: NB