SKU: 26791656853

Eaton Cutler Hammer NG3900S02 900A 3P Molded Case Generator Circuit Breaker – Bolt-On – 600VAC

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Description

Eaton Cutler Hammer NG3900S02 900A 3P Molded Case Generator Circuit Breaker – Bolt-On – 600VACThe Eaton NG3900S02 is a high capacity molded case generator circuit breaker designed for reliable protection of generators and industrial power systems. Featuring an NG frame style with an electronic interchangeable trip unit, it offers a 12505000A adjustable trip range for precise overload and short circuit protection. The S02 option includes a factory installed shunt trip, left pole mounting, and rear exit, with standard terminals included to

The Eaton NG3900S02 is a high-capacity molded case generator circuit breaker designed for reliable protection of generators and industrial power systems. Featuring an NG frame style with an electronic interchangeable trip unit, it offers a 1250–5000A adjustable trip range for precise overload and short-circuit protection. The S02 option includes a factory-installed shunt trip, left pole mounting, and rear exit, with standard terminals included to ensure flexible installation and dependable operation.

Product Specifications

• Manufacturer: Eaton / Cutler Hammer
• Frame Type: NG
• Breaker Type: Molded Case Generator Circuit Breaker
• Trip Unit: Electronic Interchangeable
• Trip Range: 1250–5000A
• Amperage: 900A at 40°C
• Poles: 3
• Mounting Type: Bolt-On
• Configuration: S02 Option Includes [9–24 VAC or VDC Shunt Trip Installed, Left Pole Mounted, Exiting Rear]
• Standard Lug Type: With Terminals Standard

Technical Specifications

• Interchangeable electronic trip unit for flexible protection
• Adjustable thermal-magnetic trip settings
• Suitable for generator and industrial applications
• Supports accessory installation at no additional cost
• One-year manufacturer warranty

Voltage and Ratings

• Voltage: 600VAC
• Frequency: 50/60 Hz
• Interrupting Ratings: 18 kA @ 240VAC, 14 kA @ 480VAC, 10 kA @ 600VAC
• Rated Current: 900A at 40°C

Product Data

• Series: NG Frame
• Poles: 3
• Mounting: Bolt-On
• Typical Applications: Generator protection, industrial switchgear, power distribution systems

Important Note

This product image represents a base model for identification purposes only. If purchasing accessories with the breaker, Eaton will install them according to your specific configuration requirements at no additional cost. Please provide all necessary instructions in the order comment box during checkout to ensure proper installation and compatibility.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 26791656853

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4.2 ★★★★★
Based on 26 reviews
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Verified Purchase
Jennifer
Draper, US
★★★★★ 5
Ergonomic and well made.
I have at least a half dozen ball launchers and this is the nicest one. As efficient as any of them and it feels the nicest in my hand. As long as you tighten the handle when you put it together, it will serve your puppy well.
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Reviewed in the United States on May 26, 2026
J
Verified Purchase
JD.
Bozeman, US
★★★★★ 1
Ball Launcher Poorly Made and Hard To Use, Save Your Money
This launcher was too long and thin to pick up the ball from the ground, I had to use my other hand to press down on it. The screw on handle was heavy and kept coming loose no matter how tight I made it, strain on the wrist to use. The ball holder end would often not let go of the ball when trying to launch it. I ended up putting it in the trash. I had two shorter Chuckit launchers that are much better made, will stick with them. I don't recommend this to anyone, save your money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
J
Verified Purchase
Jonathan
Grantham, US
★★★★★ 5
Go Get It!
GoSports does it again. Our family has a lot of GoSports products. It brings us comfort knowing when we order a product from them the quality is going to be great. The Ball Launcher is excellent. Our lab loves the soft tennis balls that come with it, preferring them over the harder rubber ones from other brands. The launcher itself is thoughtfully designed, well-made, and comfortable to hold. Our new go-to for daily fetch sessions.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 15, 2025
S
Verified Purchase
Stephanie S.
Lexington, US
★★★★★ 2
Gave it a Try
I have always used the Chuck It ball and ball launcher. I thought I would try this since the price was better. There is definitely a reason it is priced lower. The handle on this one twists on and constantly comes undone when you throw, and it does not launch nearly as well. I would not order this product again.
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Reviewed in the United States on May 26, 2026
E
Verified Purchase
Elijah
Massapequa, US
★★★★★ 4
A few usability issues
My dog is obsessed with playing fetch. It’s part of our daily routine. Pros - I like that this comes with two launchers so we can keep one at home and one in the car. - Build feels solid Cons - The cup is slightly too small for regular sized tennis balls. I buy the large Costco box of Penn tennis balls every couple of years for my dog. If you fully seat the ball in the cup/launching end, it’s extremely difficult to throw and puts some strain on your wrist. — the workaround is to only partially insert the ball when picking it up. - Like others have stated, the launcher does come unscrewed occasionally after a few throws. It’s kind of annoying so I’ll likely try some thread lock, but ideally that wouldn’t be necessary.
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Reviewed in the United States on May 15, 2026

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