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Westinghouse HNB3800T - Thermal Magnetic Trip Unit 800A 600V

Cutler Hammer
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The Westinghouse HNB3800T is a thermal magnetic circuit breaker trip unit designed to provide reliable overcurrent protection for industrial power distribution systems. It features a fixed 800A current rating and a 600V AC voltage rating, housed within a compact unit measuring 10.6" x 6.8" x 5.5" and weighing 5.2 lb. This UL-listed device, part of the MARK 75 family, offers LI (Long-time and Instantaneous) protection functions and is manufactured in the United States. It is engineered for integration into compatible NB, HNB, and NBY frame circuit breakers within three-phase applications.

Key Features & Specifications
  • Type: Thermal Magnetic Trip Unit, HNB Type
  • Voltage Rating: 600V AC
  • Current Rating: 800A Fixed
  • Dimensions: 10.6 in (L) x 6.8 in (H) x 5.5 in (W)
  • Weight: 5.2 lb
  • Standards: UL Listed
  • Functions: LI - Long-Time and Instantaneous Protection
  • Protection: Thermal Magnetic
  • Poles: 3
  • Compatible Frames: NB, HNB, NBY
  • Family: MARK 75
  • Country of Origin: United States


Product Identification
  • UPC: 786679192535
  • GTIN: 00786679192535