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Eaton ND312T57W - Molded Case Breaker 1200A 600V

Cutler Hammer
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The Eaton Cutler-Hammer ND312T57W is a 3-pole, 1200A molded case circuit breaker from the Series C family, designed for primary overcurrent and ground fault protection in industrial power distribution systems. It operates at a maximum voltage rating of 600V and 3-phase, with a solid-state trip unit providing LSIGA functions (Long-Time, Short-Time, Instantaneous, and Ground Fault Alarm) and an AIC rating of 50kA at 480V. The breaker features a bolt-on connection, an N Frame size, and measures 5.5 inches in depth, 8.25 inches in height, and 8.25 inches in width, weighing 44 lb. It complies with industry standards for molded case circuit breakers, ensuring reliable performance in demanding environments. This unit is typically applied in commercial and industrial settings requiring high-current protection and advanced trip coordination.

Key Features & Specifications
  • Type: Molded Case, Solid State Trip
  • 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 circuit breakers
  • Applications: Industrial power distribution, high-current protection
  • Switch Type: Circuit Breaker
  • Configuration: 3-Pole
  • Coil Voltage Maximum: Not specified
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 600V
  • Amperage: 1200A
  • AIC rating: 50kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: LSIGA - Long-Time, Short-Time, Instantaneous and Ground Fault Alarm
  • Functions: LSIGA
  • Frame Size: N Frame
  • Trip Type: Solid State
  • Panel Type: Not specified
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not specified
  • Control Voltage Maximum: Not specified
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not specified
  • 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: Not specified
  • Hz: Not specified
  • Coil Material: Not specified
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not specified
  • Coil Voltage Minimum: Not specified
  • Wire: Not specified
  • Amperage Maximum: 1200A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: Not specified
  • Certification: Not specified
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Not specified
  • Frequency Rating: Not specified
  • Phase Connection: 3-Phase
  • Standards: Not specified
  • Compatible Frames: N Frame
  • Installation Type: Not specified
  • Item QTY: Not specified
  • Nema Starter Size: Not specified
  • Breaker Frame: N Frame
  • Current Rating: 1200A
  • Reverse Standoff Voltage: Not specified
  • Watts: Not specified
  • Peak Pulse Current: Not specified
  • Breakdown Voltage (MIN VBR@IT ) (V): Not specified
  • Breakdown Voltage (VBR@IT) (V): Not specified
  • Polarity: Not specified
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not specified
  • On-State Current: Not specified


Product Identification
  • UPC: 782114408629
  • GTIN: 00782114408629