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HDA36150U44XAA

Square D
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Square D HDA36150U44XAA is a 3-pole molded case circuit breaker designed for overcurrent and ground fault protection in industrial power distribution systems. It is rated for 150 amps at 600 volts AC with a solid-state Micrologic trip unit providing LSIG protection (Long-Time, Short-Time, Instantaneous, and Ground Fault) and an interrupting capacity of 18kA at 480VAC. Weighing 10.27 lb, this unit features an I-Line style plug-in connection for secure panel mounting and a toggle actuator for manual operation. The breaker complies with UL 489, CSA, IEC, and CE standards, ensuring reliable performance in demanding environments. Typical applications include protecting feeders and branch circuits in manufacturing plants, commercial buildings, and heavy machinery.

Key Features & Specifications
  • Manufacturer: Square D
  • Item Subcategory: Molded Case
  • Weight: 10.27 lb
  • Functions: LSIG - Long-Time, Short-Time, Instantaneous and Ground Fault
  • Voltage Rating: 600V
  • Poles: 3
  • Connection: I-Line Style Plug-In
  • Protection: Solid State
  • AIC rating: 18kA@480V
  • Phase: 3
  • Current Rating: 150A
  • Amperage: 150A
  • Voltage Rating: 600VAC
  • Mounting Type: Unit Mount
  • Interrupt Rating: 25kA at 600VAC
  • Series/Frame: PowerPact H
  • Trip Unit: Micrologic 6.2A LSIG
  • Certifications: UL 489, CSA, IEC, CE
  • Actuator Type: Toggle
  • Phase: 3-phase (ABC)


Square D HDA36150U44XAA - Molded Case Circuit Breaker 150A 600V