Eaton Cutler Hammer NDC312T32W 1200A 3-Pole Molded Case Circuit Breaker – LSI Trip Unit – Bolt-On – 600VAC

The Eaton / Cutler Hammer NDC312T32W is a 1200 Amp, 3-pole molded case circuit breaker built on the NDC frame platform and designed for high-performance protection in demanding industrial and commercial power distribution systems. It features the Digitrip RMS 310 electronic non-interchangeable trip unit with LSI protection functions and ultra-high interrupting capacity with current-limiting capability. This breaker provides precise protection against overloads, short circuits, and instantaneous faults while delivering exceptional fault interruption performance for critical electrical infrastructures.

Product Specifications

• Brand: Eaton / Cutler Hammer
• Model: NDC312T32W
• Product Type: Molded Case Circuit Breaker
• Frame Style: NDC
• Frame Type: N
• Rated Current: 1200 Amperes
• Number of Poles: 3
• Mounting Type: Bolt-On
• Trip Unit Type: Digitrip RMS 310 (Electronic Non-Interchangeable)
• Trip Functions: LSI (Long Delay, Short Delay, Instantaneous)
• Current Limiting: Yes
• Interrupting Capacity: Ultra High
• Operating Temperature Rating: 40°C
• Frequency: 50/60 Hz
• Standard Lug Type: Without Terminals Standard
• Warranty: One Year

Technical Specifications

• • L – Long Delay Pickup: Adjustable overload protection controlled by the rating plug
  • S – Short Delay Pickup: Adjustable with fixed short delay time (I²t response) or adjustable flat response delay
  • I – Instantaneous Pickup: Adjustable instantaneous protection by configuring short delay to instantaneous
  • Current Limiting Design: Reduces peak fault current and protects downstream equipment
• Trip Setting Range: 2–8 times the continuous ampere rating

Voltage and Ratings

• Maximum Voltage: 600 VAC
• Frequency: 50/60 Hz
• Rated Current: 1200 Amperes
• Interrupting Capacity:
• • 200 kA @ 240 VAC
  • 100 kA @ 480 VAC
  • 50 kA @ 600 VAC

Product Data

• Manufacturer: Eaton / Cutler Hammer
• Model Number: NDC312T32W
• Frame Series: NDC Frame
• Connection Type: Bolt-On
• Pole Configuration: 3 Pole
• Rated Current: 1200A
• Voltage Rating: 600 VAC
• Standard Lug Type: Without Terminals

Important Note

This circuit breaker requires a rating plug to operate, which is not included with the unit. Please verify availability and pricing of the correct rating plug before ordering if installation is required. The product image shown represents a base model for identification purposes only. If accessories are purchased with the breaker, they can be installed according to your required configuration at no additional cost during order processing.

Returns are easy

You may return items within 10 days of delivery for a refund.

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