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Square D FH16040A - Molded Case Circuit Breaker 40A 1P (277V)

Square D
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Square D FH16040A is a molded case circuit breaker designed for providing reliable overcurrent protection in industrial and commercial electrical systems. It features a 40A current rating and a 277V voltage rating, housed within a compact F Frame measuring 6.4 in (162.6 mm) high, 1.5 in (38.1 mm) wide, and 4.13 in (104.90 mm) deep with a weight of 2 lb. This single-pole, plug-in unit is CSA and UL certified, offering thermal-magnetic protection with long-time and instantaneous trip functions and a 25kA interrupting capacity at 240V for robust fault protection. Its I-Line style plug-in connection facilitates installation in compatible panels, making it suitable for protecting feeder and branch circuits in lighting and appliance panels.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection
  • Voltage Rating: 277V AC
  • Current Rating: 40A
  • Dimensions: 6.4 in H x 1.5 in W x 4.13 in D (162.6 mm x 38.1 mm x 104.9 mm)
  • Weight: 2 lb
  • Standards: CSA, UL Certified
  • Applications: Industrial & Commercial Feeder/Branch Circuit Protection
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Phase: 1
  • Amperage: 40A
  • AIC Rating: 25kA @ 240V
  • Connection: I-Line Style Plug-In
  • Poles: 1
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous
  • Frame Size: F Frame
  • Wire Size: AWG 14 to 1/0 Copper, AWG 12 to 1/0 Aluminum
  • Certification: CSA, UL
  • Family: I-Line
  • Country of Origin: Mexico


Product Identification
  • UPC: 078590107597
  • GTIN: 00785901075974