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Square D HLF36125 - Molded Case Circuit Breaker, 125A 600V 3P 100kA

Square D
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Square D HLF36125 is a molded case circuit breaker from the PowerPact H-Frame family, designed to provide reliable overcurrent and short-circuit protection for three-phase industrial power distribution systems. It features a 125A continuous current rating and a 600V AC voltage rating, with a robust thermal-magnetic trip unit offering long-time and instantaneous (LI) protection functions. The breaker's compact construction measures 163 mm (H) x 78.49 mm (D) x 112.78 mm (W), weighs 5 lb, and utilizes a three-pole, bolt-on connection compatible with AWG 14 to 3/0 aluminum or copper conductors. Engineered for demanding environments, it operates within a temperature range of -2 to 70 °C and delivers a 100kA interrupting capacity at 480V AC, ensuring compliance with rigorous industrial safety and performance standards for applications like panelboards, switchboards, and motor control centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, LI (Long-Time & Instantaneous) Trip Functions
  • Voltage Rating: 600V AC
  • Current Rating: 125A
  • Dimensions: 163 mm H x 78.49 mm D x 112.78 mm W (6.42 in x 3.09 in x 4.44 in)
  • Standards: Industrial Safety and Performance Standards
  • Applications: Industrial Power Distribution, Panelboards, Switchboards, Motor Control Centers
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • AIC Rating: 100kA @ 480V AC
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal-Magnetic
  • Functions: Long-Time & Instantaneous Overcurrent Protection
  • Frame Size: H Frame
  • Trip Type: Thermal-Magnetic
  • Wire Size: AWG 14 to 3/0 (Aluminum/Copper Terminal)
  • Temp Rating: -2 to 70 °C (28 to 158 °F)
  • Weight: 5 lb


Product Identification
  • Manufacturer: Square D
  • Family: PowerPact
  • Model: HLF36125
  • Item Subcategory: Molded Case Circuit Breaker