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Square D HDA36090UD - Molded Case Circuit Breaker 90A 600V 3-Pole

Square D
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Square D HDA36090UD is a 3-pole molded case circuit breaker from the Powerpact family, designed for overcurrent protection in Class 612 I-Line panelboard and switchboard applications. It is rated for 600V AC and 90A continuous current, with a standard interrupting capacity of 18kA at 480V AC and thermal-magnetic protection providing long-time and instantaneous trip functions. The breaker features I-Line style plug-in mounting with ABC phase connection, weighs 6 lb, and accommodates AWG 14 through 3/0 aluminum or copper terminals. It is UL and CSA listed, suitable for 50/60 Hz AC and 250V DC operation, with a continuous current rating of 80 percent and magnetic hold current of 800 amperes. This unit is commonly used for power distribution and reverse fed applications in industrial environments.

Key Features & Specifications
  • Type: HDA
  • Family: Powerpact
  • Poles: 3
  • Current Rating: 90A
  • Voltage Rating: 600V AC
  • Interrupt Rating: 18kA at 480V
  • Protection: Thermal-Magnetic
  • Trip Functions: Long-Time and Instantaneous (LI)
  • Connection: I-Line Style Plug-In
  • Phase: 3
  • Weight: 6 lb
  • Certifications: UL, CSA
  • Dimensions: 9.73 inches H x 4.48 inches W x 4.8 inches D
  • Frame Type: H-Frame
  • Continuous Current Rating: 80 percent
  • Magnetic Hold Current: 800 amperes
  • Terminal Wire Range: AWG 14 through 3/0 aluminum or copper


Part Number: HDA36090UD