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

Sale price$1304.55 Regular price$1449.50
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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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Reviewed in the United States on March 4, 2026
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