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NE1236LSIG

Square D
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Square D NE1236LSIG is a 3-pole, 1200 amp molded case circuit breaker from the I-Line family, designed for primary protection with LSIG (Long-Time, Short-Time, Instantaneous, and Ground Fault) trip unit functions. It is rated for 600 volts AC and delivers a 100kA interrupting capacity at 480V, supporting heavy-duty electrical distribution. The unit weighs 87 lb and features an NE frame with I-Line style plug-in connection for secure mounting in panelboards. This solid-state circuit breaker complies with industry standards for industrial and commercial power systems requiring selective coordination and ground fault protection. It is typically applied in main or feeder circuits within large-scale manufacturing facilities, data centers, and commercial building power distribution.

Key Features & Specifications
  • Manufacturer: Square D
  • Part Number: NE1236LSIG
  • Amperage: 1200 Amps
  • Voltage Rating: 600 Volts AC
  • Poles: 3
  • Mounting Type: I-Line Plug-In
  • Interrupt Rating: 100kA at 480V
  • Series/Frame: Type NE, I-Line
  • Trip Unit: LSIG (Long-time, Short-time, Instantaneous, Ground Fault)
  • Item Subcategory: Molded Case
  • Family: I-Line
  • Weight: 87 lb
  • Frame Size: NE Frame
  • Connection: I-Line Style Plug-In
  • Protection: Solid State
  • Phase: 3


Square D NE1236LSIG - Molded Case Circuit Breaker 1200A 600V