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Westinghouse HFB1040 - Molded Case 40A 1-Pole 277V

Westinghouse
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Westinghouse HFB1040 is a 1-pole molded case circuit breaker from the MARK 75 family, designed for thermal-magnetic overcurrent protection. It is rated for 40A continuous current at 277VAC, with a high interrupting capacity of 65kA at 277V. The unit features a bolt-on connection, LI (Long-Time and Instantaneous) trip functions, and weighs 1 lb. This breaker complies with applicable industry standards for industrial and commercial power distribution systems. Typical applications include branch circuit protection in panelboards and switchboards.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 277V
  • Current Rating: 40A
  • Poles: 1
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 65kA@277V
  • Phase: 1
  • Functions: LI - Long-Time and Instantaneous
  • Family: MARK 75
  • Weight: 1 lb
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 60 Hz
  • Phase Connection: 1
  • Standards: UL, CSA
  • Installation Type: Fixed
  • Item QTY: 1
  • Breaker Frame: HFB
  • Current Rating: 40A


Product Identification
  • UPC: Not available
  • GTIN: Not available