SKU: 85506138884

Eaton Cutler Hammer KG3400S42 400A 3-Pole Generator Molded Case Circuit Breaker – Bolt-On – 600VAC – Thermal-Magnetic Interchangeable Trip (1000–2000A Range) with S42 Shunt Trip Option

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Description

Eaton Cutler Hammer KG3400S42 400A 3-Pole Generator Molded Case Circuit Breaker – Bolt-On – 600VAC – Thermal-Magnetic Interchangeable Trip (1000–2000A Range) with S42 Shunt Trip OptionThe Eaton Cutler Hammer KG3400S42 is a K frame molded case generator circuit breaker designed for high capacity generator and industrial systems. It features a thermal magnetic interchangeable trip unit with a 10002000 Amp magnetic trip range, providing reliable protection against overloads and short circuits. This model includes the S42 option, which provides a 1224V DC shunt trip, left pole mounted, exiting rear, enabling remote tripping

The Eaton Cutler-Hammer KG3400S42 is a K-frame molded case generator circuit breaker designed for high-capacity generator and industrial systems. It features a thermal-magnetic interchangeable trip unit with a 1000–2000 Amp magnetic trip range, providing reliable protection against overloads and short circuits.

This model includes the S42 option, which provides a 12–24V DC shunt trip, left pole mounted, exiting rear, enabling remote tripping functionality for enhanced operational flexibility.

Rated at 400 Ampere at 40°C with 3 poles, it is ideal for generator panels, switchgear, and industrial backup power systems.

Key Features

  • K-Frame Generator Circuit Breaker for high-capacity protection
  • Thermal-Magnetic Interchangeable Trip Unit
  • High magnetic trip range: 1000–2000 Amp
  • S42 Shunt Trip Option: 12–24V DC, Left Pole Mounted, Exiting Rear
  • Bolt-On Connection for secure installation
  • Line and Load Terminals Standard

Specifications

  • Manufacturer: Eaton / Cutler-Hammer
  • Model: KG3400S42
  • Frame Type: K
  • Rated Current: 400 Ampere
  • Poles: 3
  • Maximum Voltage: 600 VAC
  • Frequency: 50/60 Hz
  • Trip Unit Type: Thermal-Magnetic Interchangeable
  • Magnetic Trip Range: 1000–2000 Ampere
  • Interrupting Capacity:
    • 18 kA @ 240 VAC
    • 14 kA @ 480 VAC
    • 10 kA @ 600 VAC
  • Connection: Bolt-On
  • Standard Lug Type: Line and Load End Terminals
  • Configuration Option:
    • S42: 12–24V DC Shunt Trip, Left Pole Mounted, Exiting Rear
  • Warranty: One Year

Applications

  • Medium-to-large generator protection
  • Industrial and commercial switchgear integration
  • Backup power and emergency generator systems
  • High-capacity power distribution panels

Notes

The product image shows a base model for identification. Eaton provides free accessory installation for your specific configuration—include details in the order comment box during checkout.

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: 85506138884

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frequentbuyer
Louisville, US
★★★★★ 4
Stylish and affordable!
Color: Grey, Size: 4 Pack, Color: Grey, Size: 4 Pack
These shelves are rey stylish, light and durable! The set came with everything needed to install. The color is just as described. Price is steal and these shelves can definitely be used anywhere throughout the house. I did give it only 4 stars because as you can see in the photos, the underneath was not completely finished. Decided to keep because the price was unbeatable.
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Reviewed in the United States on April 5, 2026
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todd
Louisville, US
★★★★★ 5
Great shelves
Color: Mahogany, Size: 2 Pack
Love these! Easy install and they look great. Very sturdy.
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Reviewed in the United States on May 14, 2026
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Hannah
Houston, US
★★★★★ 5
Easy to Hang
Color: Black, Size: 3 Pack
This shelf is easy to hang, comes with great anchors and looks perfect. The quality looks nice and is was an easy hanging process compared to other shelves. Worth it for the price.
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Reviewed in the United States on May 18, 2026
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B from RI
Lake Worth, US
★★★★★ 5
One of the best deals available!
Color: White, Size: 2 Pack
Extremely sturdy, good looking and easy to install. I have a couple of dozen feet of assorted lengths in the kitchen, bedroom, living room and foyer. Holding all sorts of antique clocks, audio equipment and cooking stuff from my flours and assorted cornmeals to cases of powdered “lemonade”.
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Reviewed in the United States on April 18, 2026
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JJW
Battle Creek, US
★★★★★ 3
Mounting system doesn’t align on one of three shelves.
Color: Walnut, Size: 3 Pack
Nice shelves. Install was super easy except on one of the three shelves. The main mounting shelf holes were off so the shelf will not slip onto horizontal mounting poles unless I modify the shelf. So a 20 minute job becomes a two hour job. The mounting system does appear very sturdy just not aligned.
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Reviewed in the United States on January 4, 2026

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