Generact Diesel GeneratorDiesel Protector Series

Generac’s diesel generators are designed to provide incredible endurance in the harshest environments, while also tolerating dirty fuel and being easy to maintain. You can depend on Generac’s diesel generators to provide the response and longevity required for many applications. They are the traditional choice for high kW applications and for facilities where code requirements call for on-site fuel storage (ie. hospitals & emergency response centers).

Features of Diesel Protector Series

Our Diesel Protector Series consists of 5 different kW diesel generators that range from 15 kW to 50kW. You can learn about each of those plus their features & benefits below:



The next generation of intuitive controllers featuring a multilingual, two-line LCD text display with color-coded, backlit buttons.



Protector Series diesel generator with Quiet-Test, a weekly self-test mode that runs at a lower RPM, is quieter and consumes less fuel.



We are proud of our innovative product design, high quality, and first-class reliability so we stand behind them with a strong 5-year limited warranty.


Generac Diesel Generators are code readyCODE READY

The Protector Series offers compatibility with a variety of environments, with external vent and fill, a UL/CUL 142-listed, double-walled base tank, a UL/CUL 2200-listed generator, and a wide range of code-driven accessories.


Additional Features

  • External viewing window for easy inspection of generator status and breaker position
  • Removable doors for easy service and fuel fill access
  • Isochronous Governor – electronic governor control for tight and precise load response and voltage (+/- 1%) and frequency regulation
  • Available in single- and three-phase


Generact Diesel GeneratorDiesel Generators (by wattage)

Protector Series 15kW Diesel Generator: With affordable 2.3L Generac engines these diesel generators raise the bar for 15 kW light commercial generators.

Protector Series 20kW Diesel Generator: 20 kWs of standby power featuring rugged diesel engines to supply backup power for a variety of facilities and light commercial applications.

Protector Series 30kW Diesel Generator: An investment in Generac’s 30 kW generators, fueled by industrial-grade 2.4L diesel engines, protects your bottom-line.

Protector Series 48kW Diesel Generator: Keep your business running during a crisis with our robust 3.4L engines providing 48 kW of power.

Protector Series 50kW Diesel Generator: Substantial factory-built Generac 3.4L engines provide 50 kW of power for office buildings, convenience stores, and other businesses.