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Westinghouse HKB21750TM - Magnetic Only Trip Unit 250A 600V 2-Pole

Westinghouse
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Westinghouse HKB21750TM Circuit Breaker - Magnetic Only Trip Unit 250A 600V 2-Pole (MARK 75 Family) The Westinghouse HKB21750TM is a magnetic only trip unit designed for instantaneous overcurrent protection in industrial power distribution systems. This 2-pole unit is rated for 600V AC and provides a fixed current rating of 250A, with no thermal protection, ensuring rapid response to short circuits. Weighing 2 lb, the HKB21750TM is constructed for use with KB and HKB compatible frames, featuring a compact design suited for panelboard or switchboard installation. It complies with industry standards for magnetic protection, offering reliable performance in environments requiring precise, instantaneous fault interruption. Typical applications include motor control centers, industrial machinery, and feeder circuits where thermal overload protection is handled separately.

Key Features & Specifications
  • Type: Magnetic Only Trip Unit, Instantaneous (I) Function
  • Voltage Rating: 600V AC
  • Current Rating: 250A (Fixed, Minimum 250A, Maximum 250A)
  • Poles: 2
  • Protection: Magnetic Only
  • Compatible Frames: KB, HKB
  • Family: MARK 75
  • Weight: 2 lb
  • Functions: I - Instantaneous
  • Item Subcategory: Trip Units & Programmers


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