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Eaton ND312T56W - Molded Case Breaker 1200A 3-Pole LSIG

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Eaton ND312T56W is a 3-pole, 1200A molded case circuit breaker from the Series C family, designed to provide LSIG (Long-Time, Short-Time, Instantaneous and Ground Fault) protection for industrial power distribution systems. This solid-state trip unit operates at a maximum voltage rating of 600V and delivers an interrupting capacity of 50kA at 480V, with a bolt-on connection for secure installation. The N Frame breaker measures 5.5 inches in depth, 8.25 inches in height, and 8.25 inches in width, weighing 44 lb, and features a robust construction suitable for high-current applications. It complies with industry standards for molded case circuit breakers, ensuring reliable performance in demanding environments. Typical applications include main switchboard protection, large motor control centers, and industrial feeder circuits requiring precise ground fault and time-current coordination.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Solid State Trip, LSIG Protection
  • Voltage Rating: 600V
  • Current Rating: 1200A
  • Dimensions: 5.5 in x 8.25 in x 8.25 in (Length/Depth x Height x Width)
  • Standards: Industry standard for molded case breakers
  • Applications: Industrial power distribution, main switchboard, motor control centers
  • Switch Type: Circuit Breaker
  • Configuration: 3-Pole
  • Coil Voltage Maximum: Not applicable (solid state)
  • Temp Rating: Standard industrial
  • Shipping Dimensions: 5.5 in x 8.25 in x 8.25 in
  • Phase: 3
  • Voltage: 600V
  • Amperage: 1200A
  • AIC rating: 50kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Solid State LSIG
  • Functions: Long-Time, Short-Time, Instantaneous and Ground Fault
  • Frame Size: N Frame
  • Trip Type: Solid State
  • Panel Type: Industrial
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Standard
  • Panel Style: Industrial
  • Bus Type: Standard
  • Fuse Class: Not applicable
  • Insulation Temperature: Standard
  • 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: Bolt-On
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: 1200A
  • Dist Voltage: 600V
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: 1200A
  • Full Load Amp Minimum: Not specified
  • Enclosure: Open
  • 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: Circuit Breaker
  • Wire Size: Not specified
  • Certification: UL/CSA listed
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: N Frame
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: N Frame
  • 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: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 078211440863
  • GTIN: 00782114408636