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Westinghouse HNB312000TM - Magnetic Trip Unit 1200A 600V

Westinghouse
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Westinghouse HNB312000TM Circuit Breaker The Westinghouse HNB312000TM is a magnetic-only trip unit designed for instantaneous overcurrent protection in industrial power distribution systems. This three-pole device is rated for 600V AC and handles a continuous current range from 1200A minimum to 1200A maximum, providing precise short-circuit interruption without thermal delay. Weighing 4 lb, the unit features a compact construction compatible with NB, HNB, and NBY frame circuit breakers, ensuring straightforward integration into existing switchgear. It complies with industry standards for magnetic protection, making it suitable for applications requiring rapid fault clearing, such as motor control centers and heavy machinery circuits.

Key Features & Specifications
  • Type: HNB Series Trip Unit, Magnetic Only
  • Voltage Rating: 600V AC
  • Current Rating: 1200A (minimum and maximum)
  • Poles: 3
  • Protection: Magnetic Only (Instantaneous)
  • Functions: I - Instantaneous
  • Compatible Frames: NB, HNB, NBY
  • Weight: 4 lb
  • Family: MARK 75
  • Item Subcategory: Trip Units & Programmers


Product Identification
  • UPC: Not specified
  • GTIN: Not specified