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Square D NE1236LSIG - Molded Case Breaker 1200A 600V

Square D
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The Square D NE1236LSIG is a 3-pole molded case circuit breaker from the I-Line family, designed for primary protection of electrical distribution systems. It features a solid-state trip unit with LSIG (Long-Time, Short-Time, Instantaneous, and Ground Fault) protection functions, rated for 1200A at 600V AC and 3-phase operation. This NE frame breaker weighs 87 lb and utilizes an I-Line style plug-in connection for secure mounting in compatible panelboards. It carries a high interrupting capacity of 100kA at 480V AC, meeting stringent industry standards for industrial environments. Typical applications include main or feeder protection in commercial and industrial power distribution systems requiring precise, adjustable overcurrent and ground fault protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Trip, I-Line Style Plug-In
  • Voltage Rating: 600V AC
  • Current Rating: 1200A
  • Dimensions: NE Frame
  • Standards: 100kA@480V AIC
  • Applications: Industrial power distribution, main and feeder protection
  • Switch Type: Circuit Breaker
  • Configuration: 3-Pole
  • Coil Voltage Maximum: Not applicable (solid state trip)
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 600V
  • Amperage: 1200A
  • AIC rating: 100kA@480V
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Solid State, LSIG (Long-Time, Short-Time, Instantaneous, Ground Fault)
  • Functions: LSIG
  • Frame Size: NE Frame
  • Trip Type: Solid State
  • Panel Type: I-Line
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: I-Line
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Plug-In
  • Hz: 50/60 Hz (typical)
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: 1200A
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: 1200A
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 1200A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not applicable
  • Wire Size: Not specified
  • Certification: UL listed (typical)
  • Circuit Breaker Mounting Style: Plug-In
  • Terminal Connection: I-Line
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA (typical)
  • Compatible Frames: NE Frame
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: NE
  • Current Rating: 1200A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: Not specified
  • GTIN: Not specified