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Square D HDA36125AA - Molded Case 125A 600V 3-Pole Breaker

Square D
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Square D HDA36125AA is a Powerpact HDA series molded case circuit breaker designed for reliable overcurrent protection in commercial and industrial power distribution systems. This three-pole, 125A breaker is rated for 600V AC and provides LI (Long-Time and Instantaneous) protection functions through a thermal magnetic trip unit, with an interrupting capacity of 18kA at 480V AC. Weighing 12.5 lb, it features an I-Line style plug-in mounting for straightforward panel installation and includes an auxiliary switch for status indication. The breaker is UL listed, meeting North American safety standards for electrical equipment. Typical applications include branch circuit protection, feeder protection, and main disconnect service in industrial control panels, switchboards, and distribution boards.

Key Features & Specifications
  • Manufacturer: Square D
  • Series: Powerpact HDA
  • Type: Molded Case Circuit Breaker
  • Amperage: 125A
  • Voltage: 600V AC
  • Poles: 3
  • Phase: 3
  • Functions: LI - Long-Time and Instantaneous
  • Protection: Thermal Magnetic
  • Interrupt Rating: 18kA @ 480V
  • Connection: I-Line Style Plug-In
  • Weight: 12.5 lb
  • Features: Auxiliary Switch
  • Certifications: UL Listed


Part Number: HDA36125AA