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Westinghouse HKB3700TM - Magnetic Only 250A 600V 3-Pole

Westinghouse
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Westinghouse HKB3700TM is a 3-pole magnetic-only circuit breaker designed for instantaneous protection in industrial power distribution systems. It is rated for 600V AC and 250A, providing reliable short-circuit protection without thermal overload sensing. This unit weighs 2 lb and is compatible with Westinghouse KB and HKB frames, featuring a bolt-on mounting configuration. It is UL Listed and carries a 25,000A symmetrical interrupt rating at 480V AC. Typical applications include motor control centers, switchboards, and other commercial or industrial environments requiring high-capacity magnetic protection.

Key Features & Specifications
  • Type: HKB
  • Family: MARK 75
  • Functions: I - Instantaneous
  • Voltage Rating: 600V AC
  • Amperage: 250A
  • Poles: 3
  • Protection: Magnetic Only
  • Mounting Type: Bolt-on
  • Interrupt Rating: 25,000A symmetrical at 480V AC
  • Compatible Frames: KB, HKB
  • Weight: 2 lb
  • UL Listed


Part Number: HKB3700TM