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Westinghouse HNB21000T - Thermal Magnetic Circuit Breaker 1000A 2P

Westinghouse
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Westinghouse HNB21000T is a two-pole thermal magnetic circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial power distribution systems. It features a 600V AC voltage rating and a fixed 1000A current rating, housed within a compact 1000A frame size unit with a durable construction weighing 3 lb. This breaker complies with relevant industry standards for electrical safety and is engineered for integration into compatible NB, HNB, and NBY frame systems. Its LI (Long-time and Instantaneous) trip functions make it suitable for protecting feeders and mains in commercial and industrial panelboards and switchgear.

Key Features & Specifications
  • Type: Thermal Magnetic Circuit Breaker, Fixed Mount
  • Voltage Rating: 600V AC
  • Current Rating: 1000A
  • Frame Size: 1000A
  • Poles: 2
  • Protection: Thermal Magnetic
  • Trip Functions: LI (Long-time and Instantaneous)
  • Compatible Frames: NB, HNB, NBY
  • Weight: 3 lb
  • Family: MARK 75