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Westinghouse HFB1045L - Molded Case Circuit Breaker 45A 277V

Westinghouse
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Westinghouse HFB1045L is a molded case circuit breaker designed for providing reliable overcurrent protection in industrial and commercial electrical systems. It features a 45A current rating and a 277V AC voltage rating, housed within a compact, single-pole feed-thru configuration with a weight of 1 lb. This thermal magnetic breaker offers LI (Long-time and Instantaneous) protection functions and is built to interrupt up to 65kA at 277V, ensuring compliance with rigorous industry safety standards for circuit protection. It is typically applied in panelboards and switchboards for lighting and appliance branch circuits.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, HFB Type, Thermal Magnetic Protection
  • Voltage Rating: 277V AC
  • Current Rating: 45A
  • Poles: 1
  • Connection: Feed-Thru
  • AIC Rating: 65kA @ 277V
  • Phase: 1
  • Functions: LI (Long-Time and Instantaneous)
  • Family: MARK 75
  • Weight: 1 lb
  • Protection: Thermal Magnetic