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Square D HDA36125US - 125A 3-Pole Molded Case Circuit Breaker

Square D
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Square D HDA36125US is a 3-pole molded case circuit breaker from the Powerpact family, designed for overcurrent protection in power distribution systems. It is rated for 125A at 600VAC with an 18kA interrupting capacity at 480V, utilizing a thermal magnetic trip unit that provides LI (Long-Time and Instantaneous) protection functions. This unit weighs 6 lb and features an I-Line style plug-in connection for direct mounting in compatible panelboards and switchboards, with a non-interchangeable trip unit and an 80% continuous current rating. It is UL 489 Listed, CSA Certified, and meets NEMA, NMX, VDE, BS, CCC, IEC, and CE standards for global compliance. Typical applications include commercial and industrial electrical distribution systems requiring reliable branch circuit protection in Class 612 I-Line panelboards and switchboards.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: Powerpact
  • Type: HDA
  • Weight: 6 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 600VAC
  • Poles: 3
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • AIC rating: 18kA@480V
  • Phase: 3
  • Current Rating: 125A
  • Amperage Rating: 125A
  • Series: HDA PowerPacT H
  • Mounting Type: I-Line Plug-On
  • Trip Unit: Thermal Magnetic with Long-Time and Instantaneous functions
  • Continuous Current Rating: 80%
  • Certifications: UL 489 Listed, CSA Certified, NEMA, NMX, VDE, BS, CCC, IEC Rated, CE Marked
  • Construction: Molded Case
  • Phase Connection: ABC 3 Phase