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Westinghouse HLB3350T - Thermal Magnetic Trip Unit 350A 600V

Westinghouse
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Westinghouse HLB3350T 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 350A current rating, housed within a compact 350-frame size unit weighing 2 lb. This trip unit complies with industry standards for circuit protection and is engineered for integration into compatible LB and HLB frame circuit breakers. Its typical applications include protecting feeders and branch circuits in commercial and industrial panelboards and switchboards where long-time and instantaneous (LI) protection functions are required.

Key Features & Specifications
  • Type: Thermal Magnetic Trip Unit, HLB Type
  • Voltage Rating: 600V AC
  • Current Rating: 350A
  • Functions: LI (Long-Time and Instantaneous)
  • Protection: Thermal Magnetic
  • Frame Size: 350
  • Poles: 3
  • Compatible Frames: LB, HLB
  • Family: MARK 75
  • Weight: 2 lb