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Cutler-Hammer HFD3125 - 3-Pole Molded Case Breaker, 125A 600V

Cutler Hammer
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The Cutler-Hammer HFD3125 is a three-pole, molded case circuit breaker designed to provide reliable overcurrent and short-circuit protection for three-phase industrial power systems. It features a 125A continuous current rating and a 600V AC voltage rating, housed within a compact 225A frame with bolt-on connections and load-side lugs for secure installation. Constructed for durability, it operates across a temperature range of -20°C to 70°C (-4°F to 158°F) and provides a 65kA interrupting capacity at 480V AC. This thermal-magnetic breaker, offering long-time and instantaneous (LI) trip functions, complies with UL, CSA, and IEC standards for safety and interoperability. It is engineered for integration into motor control centers, switchboards, and enclosed controls from major manufacturers like Allen-Bradley, Eaton, and Rockwell Automation.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 600V AC
  • Current Rating: 125A
  • Frame Size: 225A/F
  • Poles: 3
  • Phase Connection: 3-Phase (ABC)
  • AIC Rating: 65kA @ 480V AC
  • Trip Functions: LI (Long-Time & Instantaneous)
  • Connection: Bolt-On, Load Side Lug
  • Wire Size Range: 14 AWG to 1/0 AWG
  • Operating Temperature: -20°C to 70°C (-4°F to 158°F)
  • Dimensions: 85.9 mm x 104.9 mm x 104.9 mm (3.38 in x 4.13 in x 4.13 in)
  • Weight: 4.25 lb
  • Standards & Certification: UL Listed, CSA Certified, IEC Rated
  • Compatible Panel Types: Allen-Bradley MCC, Eaton MCC, Rockwell Automation Enclosed Control, Switchboard, Westinghouse
  • Breaker Type: Standard
  • Family: Series C
  • Country of Origin: Dominican Republic


Product Identification
  • UPC: 786679175903
  • GTIN: 00786679175903