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Westinghouse HMA3400T - Thermal Magnetic Trip Unit 400A 600V

Westinghouse
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Westinghouse HMA3400T is a thermal magnetic circuit breaker trip unit designed for providing reliable overcurrent protection in industrial power distribution systems. It features a 600V AC voltage rating and a fixed 400A current rating, housed within a compact, durable unit measuring 10.7" x 7" x 5.5" and weighing 3.5 lb. This UL Listed device complies with industry standards and is engineered for integration into compatible MA and HMA frame circuit breakers, making it suitable for protecting feeders and branch circuits in commercial and industrial facilities.

Key Features & Specifications
  • Type: HMA Thermal Magnetic Trip Unit for circuit breaker protection
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 10.7 in x 7 in x 5.5 in (Length/Depth x Height x Width)
  • Standards: UL Listed
  • Applications: Industrial power distribution, feeder and branch circuit protection
  • Functions: LI (Long-Time and Instantaneous)
  • Frame Size: 400
  • Poles: 3
  • Protection: Thermal Magnetic
  • Compatible Frames: MA, HMA
  • Country of Origin: United States
  • Family: MARK 75
  • Weight: 3.5 lb


Product Identification
  • UPC: 786679189818
  • GTIN: 00786679189818