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Westinghouse HNB312000TM - Circuit Breaker 1200A 600V 3-Pole

Westinghouse
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Westinghouse HNB312000TM is a 3-pole molded case circuit breaker from the MARK 75 family, designed for instantaneous magnetic-only protection in industrial power distribution systems. It is rated for 1200 amps at 600 volts AC, providing a high interrupt rating suitable for 600 VAC fault current interruption. The unit weighs 4 lb and features a bolt-on mounting type with a late model 3-piece lid and load lugs for straightforward installation. This breaker complies with industry standards for reliable overcurrent protection in demanding environments. Typical applications include protecting feeders, motors, and other heavy electrical equipment in manufacturing plants and commercial facilities.

Key Features & Specifications
  • Type: HNB
  • Amperage: 1200 Amps
  • Voltage Rating: 600 Volts AC
  • Poles: 3
  • Mounting Type: Bolt-On
  • Series/Frame: MARK 75
  • Trip Unit: Magnetic Only
  • Functions: I - Instantaneous
  • Interrupt Rating: High (suitable for 600 VAC)
  • Weight: 4 lb
  • Compatible Frames: NB, HNB, NBY