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Square D HDA36125SH - Molded Case Circuit Breaker 125A 600V 3-Pole

Square D
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Square D HDA36125SH is a Powerpact HDA series molded case circuit breaker designed for overcurrent protection in industrial and commercial power distribution systems. This three-pole, 125A breaker is rated for 600V AC and features a thermal magnetic trip unit providing long-time and instantaneous (LI) protection functions. It utilizes an I-Line style plug-in connection for straightforward installation in Class 612 panelboards and switchboards, and weighs 6 lb. The unit is complete with a 380/480Vac shunt trip for remote tripping capability, and complies with UL and CSA standards. Typical applications include branch circuit protection in manufacturing facilities, data centers, and commercial buildings requiring reliable, high-capacity circuit interruption.

Key Features & Specifications
  • Manufacturer: Square D
  • Series/Frame: HDA
  • Family: Powerpact
  • Type: HDA
  • Amperage: 125A
  • Voltage: 600V AC
  • Poles: 3
  • Phase: 3
  • Mounting Type: I-Line Style Plug-In
  • Connection: Plug-On
  • Interrupt Rating: 18kA @ 480V
  • Trip Unit: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Continuous Current Rating: 80%
  • Application: Class 612 I-Line Panelboard/Switchboard
  • Certifications: UL Listed, CSA Certified
  • Weight: 6 lb
  • Additional Info: complete with 380/480Vac shunt trip


Part Number: HDA36125SH