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Square D FH16045A - Molded Case Circuit Breaker, 45A 1-Pole

Square D
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The Square D FH16045A is a molded case circuit breaker designed to provide reliable overcurrent and short-circuit protection for single-phase 277V AC branch circuits. It features a 45A continuous current rating and a 25kA interrupting capacity at 240V AC, utilizing a thermal-magnetic trip mechanism with long-time and instantaneous (LI) protection functions. Constructed with a compact F-frame design measuring 162.6 mm H x 38.1 mm W x 104.9 mm D and weighing 2 lb, it employs a plug-in, I-Line style connection for simplified installation. This breaker is engineered for compliance with relevant industry standards and is typically applied in industrial and commercial panelboards, switchboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection, I-Line Style Plug-In Connection
  • Voltage Rating: 277V AC
  • Current Rating: 45A
  • Dimensions: 162.6 mm H x 38.1 mm W x 104.9 mm D (6.4 in x 1.5 in x 4.13 in)
  • Weight: 2 lb
  • Frame Size: F Frame
  • Poles: 1
  • Phase: 1
  • AIC Rating: 25kA @ 240V AC
  • Protection Functions: LI (Long-Time and Instantaneous)
  • Trip Type: Thermal Magnetic
  • Connection: Plug-In
  • Family: I-Line
  • Country of Origin: Mexico