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Square D HDA36090UN - Molded Case Circuit Breaker 90A 600V

Square D
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Square D HDA36090UN is a three-pole molded case circuit breaker from the Powerpact family, designed to provide overcurrent protection through thermal magnetic operation. It is rated for 600V AC, 90A continuous current, and an interrupting capacity of 18kA at 480V, with LI (Long-Time and Instantaneous) protection functions. The unit features an I-Line style plug-in connection, weighs 6 lb, and is constructed for three-phase industrial applications. This breaker complies with applicable industry standards for molded case circuit breakers and is suited for use in distribution panels and switchboards requiring reliable branch circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Powerpact HDA family
  • Voltage Rating: 600V AC
  • Current Rating: 90A
  • Poles: 3
  • Phase: 3
  • Connection: I-Line Style Plug-In
  • Protection: Thermal Magnetic
  • AIC Rating: 18kA@480V
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 6 lb
  • Circuit Breaker Mounting Style: Plug-In
  • Terminal Connection: I-Line
  • Frequency Rating: 60 Hz (typical)
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Installation Type: Panelboard or Switchboard
  • Breaker Frame: HDA
  • Current Rating: 90A
  • Operating Temperature Maximum Celsius: 40°C (typical)


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