Eaton Cutler Hammer NG31200S03 1200A 3-Pole Molded Case Generator Circuit Breaker – Interchangeable Trip Unit – Bolt-On – 600VAC

The NG31200S03 is a generator-grade molded case circuit breaker featuring an electronic interchangeable trip unit. Rated at 1200 A, it is designed for industrial generator applications requiring robust protection and advanced control functionality.

This breaker is bolt-on, operates in three-phase systems, and supports 600 VAC. The S03 configuration provides a specific shunt trip setup for remote tripping applications.

Key Features

• Brand: Eaton / Cutler Hammer
• Model: NG31200S03
• Breaker Type: Molded Case Generator Circuit Breaker
• Frame Style: NG
• Frame Type: N
• Rated Current: 1200 A
• Poles: 3
• Trip Unit Type: Electronic Interchangeable
• Trip Range: 1250–5000 A
• Mounting Type: Bolt-On
• Operating Temperature: 40°C
• Frequency: 50/60 Hz
• Warranty: One Year

Voltage and Ratings

• Maximum Voltage: 600 VAC
• Interrupting Ratings:
• 18 kA @ 240 VAC
• • 14 kA @ 480 VAC
  • 10 kA @ 600 VAC

S03 Configuration

• Includes 9–24 VAC or VDC Shunt Trip Installed
• Left pole mounted
• Exiting opposite side
• Designed for remote breaker control in automated or generator protection systems

Additional Notes

• Product image represents the base model for identification purposes.
• Accessories can be installed at no additional cost if ordered with the breaker; provide specifications in the order comment box.
• Standard lug type is included (with terminals).

Returns are easy

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

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