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Westinghouse HFB1100 - Molded Case Breaker 100A 277V (1-Pole)

Westinghouse
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Westinghouse HFB1100 Circuit Breaker is a 1-pole molded case circuit breaker designed for overcurrent protection in electrical distribution systems. It is rated for 100A at 277V AC with a 65kA interrupting capacity, providing robust fault current protection. This bolt-on unit weighs 1 lb and features thermal magnetic protection with LI (Long-Time and Instantaneous) trip functions. It is part of the MARK 75 family and complies with industry standards for industrial and commercial applications. Typical uses include branch circuit protection in panelboards and switchboards.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, Bolt-On
  • Voltage Rating: 277V AC
  • Current Rating: 100A
  • Poles: 1
  • Phase: 1
  • AIC Rating: 65kA@277V
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Bolt-On
  • Family: MARK 75
  • Weight: 1 lb
  • Standards: Industry standard for molded case breakers
  • Applications: Industrial and commercial branch circuit protection
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 60 Hz
  • Phase Connection: Single Phase
  • Breaker Frame: HFB
  • Installation Type: Fixed
  • Item QTY: 1
  • Operating Temperature Maximum Celsius: 40°C


Product Identification
  • UPC: Not provided
  • GTIN: Not provided