Eaton Cutler Hammer NG3700S02 700A 3-Pole Molded Case Generator Circuit Breaker – Interchangeable Trip Unit – Bolt-On – 600VAC

The Eaton / Cutler Hammer NG3700S02 is a heavy-duty molded case generator circuit breaker designed for reliable protection of generator-powered electrical systems. Built on the NG frame platform, it features an electronic interchangeable trip unit with an adjustable trip range of 500–2500 amperes, allowing flexible protection settings to suit varying generator load conditions.

Rated at 700 amperes at 40°C, this three-pole breaker operates at 600VAC (50/60 Hz) and is suitable for demanding industrial and commercial generator installations. The S02 configuration includes a factory-installed 9–24 VAC or VDC shunt trip, mounted on the left pole with a rear exit, enabling remote tripping functionality for enhanced system control and safety. The breaker is supplied with terminals as standard for easy and secure installation.

Product Specifications

• Manufacturer: Eaton / Cutler Hammer
• Model: NG3700S02
• Breaker Type: Molded Case Generator Circuit Breaker
• Frame Style: NG Frame
• Frame Type: N
• Rated Current: 700 Amperes
• Number of Poles: 3 Pole
• Trip Unit Type: Electronic Interchangeable Trip Unit
• Trip Range: 500 – 2500 A
• Connection Type: Bolt-On
• Configuration: S02 Option (Shunt Trip Installed)
• Operating Frequency: 50/60 Hz
• Standard Lug Type: With Terminals Standard
• Warranty: One Year

Technical Specifications

• Circuit Breaker Category: Generator Protection Breaker
• Mounting Method: Bolt-On Installation
• Trip Technology: Electronic Interchangeable Protection System
• Operating Temperature Rating: 40°C
• Frame Construction: NG Series Molded Case Design
• Application: Generator distribution systems and industrial electrical protection
• Shunt Trip Details:
• • 9–24 VAC or VDC operating voltage
  • Left pole mounted
  • Rear cable exit configuration

Voltage and Ratings

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

Product Data

• Product Series: Eaton NG Generator Breaker Series
• Rated Current: 700 A
• Phase Compatibility: Three-Phase Systems
• Electrical Frequency: 50/60 Hz
• Terminal Configuration: With Terminals Standard
• Installation Type: Bolt-On Panel Mount
• Configuration Option: S02 Shunt Trip Factory Installed

Important Note

The product image shown represents a base model for identification purposes only and may not reflect the exact configuration supplied. If accessories or additional components are ordered together with the circuit breaker, they can be installed according to your required configuration at no additional cost. Please provide the necessary installation details in the order comment section during checkout to ensure the breaker is configured correctly before shipment.

Returns are easy

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

FREE Shipping on orders over $149.

My Circuit Breakers offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

Same Day Shipping

We strive to ship out your items within one business day.

In rare circumstances, My Circuit Breakers may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.