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Square D HDA36125SJ - Molded Case 125A 600V 3-Pole Breaker

Square D
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Square D HDA36125SJ is a 3-pole molded case circuit breaker from the Powerpact family, designed for overcurrent protection in industrial power distribution systems. It is rated for 125A continuous current at up to 600VAC, with an interrupting capacity of 18kA at 480VAC, and features LI (Long-Time and Instantaneous) protection functions via a thermal-magnetic trip mechanism. The unit weighs 6 lb, uses an I-Line style plug-in connection for panel mounting, and is complete with a 525/600Vac shunt trip for remote tripping capability. This breaker complies with applicable UL and NEMA standards for industrial environments. Typical applications include motor control centers, switchboards, and panelboards in manufacturing plants, commercial buildings, and heavy industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Powerpact HDA, thermal-magnetic, I-Line plug-in
  • Voltage Rating: 600VAC
  • Current Rating: 125A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 18kA@480V
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic (LI - Long-Time and Instantaneous)
  • Functions: LI - Long-Time and Instantaneous
  • Additional Info: complete with 525/600Vac shunt trip
  • Weight: 6 lb
  • Family: Powerpact
  • Item Subcategory: Molded Case


Product Identification
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