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Square D HJA36150U44XAABCSJYP - Molded Case Breaker 150A 600V LSIG

Square D
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The Square D HJA36150U44XAABCSJYP is a 3-pole molded case circuit breaker designed for primary overcurrent and ground fault protection in industrial power distribution systems. It is rated for 600V AC, 150A continuous current, and features a solid-state trip unit with LSIG (Long-Time, Short-Time, Instantaneous and Ground Fault) protection functions, providing selective coordination and fault isolation. The breaker employs an I-Line style plug-in connection for secure mounting in compatible panelboards and switchboards, with a compact frame weighing 10.27 lb. It complies with UL 489 and NEMA standards, offering a high interrupting capacity of 65kA at 480V AC for robust fault handling. Typical applications include main or feeder protection in commercial and industrial facilities, motor control centers, and critical power systems requiring adjustable trip settings.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Trip
  • Voltage Rating: 600V AC
  • Current Rating: 150A
  • Poles: 3
  • Connection: I-Line Style Plug-In
  • Protection: LSIG (Long-Time, Short-Time, Instantaneous and Ground Fault)
  • AIC Rating: 65kA@480V
  • Phase: 3
  • Weight: 10.27 lb
  • Standards: UL 489, NEMA
  • Applications: Industrial power distribution, motor control centers, feeder protection


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