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Westinghouse HMA3450T - Thermal Magnetic Trip Unit 450A 600V 3-Pole

Westinghouse
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The Westinghouse HMA3450T is a thermal-magnetic trip unit designed for overcurrent protection within MARK 75 series circuit breaker frames. This unit provides LI (Long-Time and Instantaneous) protection functions, operating at a maximum voltage rating of 600V and a current rating of 450A across three poles. The component weighs 4 lb and is compatible with both MA and HMA breaker frames, featuring a robust construction for industrial environments. It complies with relevant industry standards for thermal-magnetic protection devices. This trip unit is typically applied in industrial power distribution systems requiring precise long-time and instantaneous trip coordination.

Key Features & Specifications
  • Type: Thermal Magnetic Trip Unit
  • Voltage Rating: 600V
  • Current Rating: 450A (Minimum 450A, Maximum 450A)
  • Poles: 3
  • Functions: LI - Long-Time and Instantaneous
  • Compatible Frames: MA, HMA
  • Weight: 4 lb
  • Family: MARK 75
  • Protection: Thermal Magnetic


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