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Westinghouse HKB3225T - Thermal Magnetic Trip Unit 225A 600V 3P

Westinghouse
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Westinghouse HKB3225T is a three-pole 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 225A current rating, housed within a compact 225-frame size unit weighing 2 lb. This unit complies with industry standards for circuit protection and is engineered for integration into compatible KB and HKB breaker frames. Its primary application is in commercial and industrial panelboards and switchboards where long-time and instantaneous (LI) protection functions are required for three-phase circuits.

Key Features & Specifications
  • Type: Thermal Magnetic Trip Unit, Fixed Rating
  • Voltage Rating: 600V AC
  • Current Rating: 225A
  • Poles: 3
  • Frame Size: 225
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous (LI)
  • Compatible Frames: KB, HKB
  • Family: MARK 75
  • Weight: 2 lb