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Westinghouse FD1045 - Molded Case Circuit Breaker 45A 277V 1P

Cutler Hammer
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The Westinghouse FD1045 is a molded case circuit breaker designed to provide reliable overcurrent protection for industrial and commercial electrical systems. It features a 45A current rating and a 277V AC voltage rating, suitable for single-phase applications. The breaker is constructed with a compact F-frame design measuring 3.38" x 6" x 1.38" (LxHxW) and a bolt-on connection, utilizing a thermal-magnetic trip unit that combines long-time and instantaneous trip functions for coordinated protection. It is UL Listed and offers an interrupting capacity of 35kA at 277V, ensuring compliance with industry safety standards for branch circuit protection in panelboards and switchboards.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 277V AC
  • Current Rating: 45A
  • Dimensions: 3.38 in (Depth) x 6 in (Height) x 1.38 in (Width)
  • Standards: UL Listed
  • Applications: Industrial & Commercial Branch Circuit Protection
  • Switch Type: Circuit Breaker
  • Configuration: Single Pole
  • Phase: 1
  • AIC Rating: 35kA @ 277V
  • Connection: Bolt-On
  • Poles: 1
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: F Frame
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Weight: 4.5 lb
  • Family: Series C
  • Country of Origin: Dominican Republic


Product Identification
  • UPC: 786679312575
  • GTIN: 00786679312575