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Westinghouse NB21000T - Trip Unit 1000A 2-Pole 600V

Westinghouse
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Westinghouse NB21000T is a 2-pole molded case circuit breaker designed for overcurrent protection in industrial and commercial power distribution systems. It operates at a maximum voltage rating of 600V AC and provides a 1000-amp trip rating within a 1200-amp frame, utilizing thermal magnetic protection with LI (Long-Time and Instantaneous) functions. Weighing 3 lb, this unit is constructed as a bolt-on or plug-in compatible device within the NB molded case frame. It is part of the NB Series and is compatible with NB, HNB, and NBY frames, engineered for consistent performance in demanding environments. Typical applications include medium to high-capacity electrical systems requiring dependable overcurrent protection in industrial facilities and commercial buildings.

Key Features & Specifications
  • Type: NB
  • Family: NB Series
  • Item Subcategory: Trip Units & Programmers
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 600V AC
  • Poles: 2
  • Amperage Minimum: 1000
  • Amperage Maximum: 1000
  • Protection: Thermal Magnetic
  • Compatible Frames: NB, HNB, NBY
  • Frame Amperage: 1200 amps
  • Trip Amperage: 1000 amps
  • Interrupting Capacity: 30 kA at 480V
  • Frame Type: NB (Molded Case)
  • Connection: Bolt-on or plug-in compatible
  • Weight: 3 lb