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Westinghouse HKB21500TM - Trip Unit 600V 250A 2-Pole

Westinghouse
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The Westinghouse HKB21500TM is a magnetic-only trip unit designed for instantaneous overcurrent protection in industrial circuit breaker applications. This 2-pole unit operates at a voltage rating of 600V and supports a current range from 250A minimum to 250A maximum, providing precise short-circuit interruption without thermal delay. Weighing 2 lb, it is constructed as a compact trip unit and programmer within the MARK 75 family, compatible with KB and HKB breaker frames. It complies with industry standards for magnetic protection, ensuring reliable performance in environments requiring rapid fault clearing. Typical applications include motor control centers, switchgear, and distribution systems where instantaneous trip characteristics are essential.

Key Features & Specifications
  • Type: Trip Unit & Programmer, Magnetic Only
  • Voltage Rating: 600V
  • Current Rating: 250A
  • Poles: 2
  • Protection: Magnetic Only
  • Functions: I - Instantaneous
  • Compatible Frames: KB, HKB
  • Family: MARK 75
  • Weight: 2 lb
  • Amperage Minimum: 250
  • Amperage Maximum: 250


Product Identification
  • UPC: Not specified
  • GTIN: Not specified