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Square D HDA36125UAYP - Molded Case 125A 600V (3-Pole I-Line)

Square D
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Square D HDA36125UAYP is a 3-pole molded case circuit breaker from the PowerPact HDA series, designed to provide primary overcurrent protection for industrial and commercial power distribution systems. It is rated for 125A at 600V AC with an interrupting capacity of 18kA at 480V, utilizing thermal-magnetic trip technology with long-time and instantaneous (LI) functions for reliable fault response. This unit features an I-Line style plug-in mounting for Class 612 panelboards and switchboards, weighs 12.5 lb, and accepts wire sizes from 14 to 3/0 AWG in aluminum or copper. It is UL Listed, CSA Certified, and IEC Rated for compliance with rigorous safety and performance standards. Typical applications include branch circuit protection in manufacturing facilities, commercial buildings, and heavy equipment power panels.

Key Features & Specifications
  • Manufacturer: Square D
  • Series/Frame: PowerPact HDA
  • Type: Molded Case Circuit Breaker
  • Amperage: 125A
  • Voltage: 600V AC
  • Poles: 3
  • Phase: 3 Phase
  • Interrupt Rating: 18,000A AIC at 480V
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Mounting Type: I-Line Plug-In
  • Weight: 12.5 lb
  • Terminal Wire Size: 14 to 3/0 AWG (Aluminum/Copper)
  • Approvals: UL Listed, CSA Certified, IEC Rated


Part Number: HDA36125UAYP