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Square D HJA36125SN - 3-Pole 125A 600V Molded Case Breaker

Square D
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Square D HJA36125SN is a Powerpact H-Frame molded case circuit breaker designed for reliable overcurrent protection in commercial and industrial power distribution systems. This 3-pole, 125A, 600V breaker features LI (Long-Time and Instantaneous) functions with thermal magnetic protection and a 65kA interrupting rating at 480V. The unit utilizes I-Line style plug-in mounting for straightforward installation in panelboards and switchboards, weighs 5 lb, and is complete with a 12Vdc shunt trip for remote tripping capability. It is UL listed for safety and performance in demanding electrical environments. Typical applications include power distribution in commercial buildings, industrial facilities, and switchboard assemblies.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Family: Powerpact
  • Type: HJA
  • Weight: 5 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 600V
  • Poles: 3
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • AIC Rating: 65kA @ 480V
  • Phase: 3
  • Current Rating: 125A
  • Additional Info: Complete with 12Vdc shunt trip
  • Series/Frame: Powerpact H-Frame
  • Mounting Type: I-Line style plug-in
  • Application: Power Distribution
  • Certifications: UL Listed


Part Number: HJA36125SN