Generac Protector Diesel 20kW - Heavy-Duty Liquid-Cooled Backup

20,000 Watts. 2.5L Mitsubishi Diesel Engine. 1800 RPM Low Speed.

The Generac Protector® Diesel 20kW is engineered for homeowners and light commercial properties that require industrial-grade reliability. Powered by a heavy-duty 2.5L Mitsubishi In-Line 4-cylinder engine operating at a low 1800 RPM, this generator offers exceptional fuel efficiency and a significantly longer lifespan than high-speed alternatives. With its integrated 33.5-gallon double-wall fuel tank, it provides up to 31 hours of runtime at 50% load, ensuring your essential systems stay online during extended outages.

Precision Engineering & Quiet Performance

This diesel standby generator features an Isochronous Electronic Governor, providing precise voltage and frequency regulation (±1%)—making it perfectly safe for sensitive electronics, HVAC systems, and high-end appliances. The Quiet-Test™ mode allows for weekly self-tests at reduced RPMs to save fuel and minimize noise, while the corrosion-resistant Aluminum Enclosure ensures your investment is protected against harsh coastal air and extreme weather conditions.

Mobile Link™ Monitoring

Integrated Wi-Fi and Ethernet connectivity allows you to track generator status, schedule maintenance, and receive real-time alerts from your smartphone or tablet anywhere in the world.

Code-Ready Safety

Designed to meet strict regional codes with a UL/CUL 142-listed double-wall base fuel tank, ensuring compliance and environmental protection in any residential or commercial setting.

Technical Specifications

GENERAC PROTECTOR DIESEL 20kW SPECIFICATIONS
Rated Output	20,000 Watts (20kW)
Engine Brand & Model	Mitsubishi 2.5L In-Line 4-Cylinder Diesel
Operating Speed	1800 RPM (Low Speed)
Fuel Tank Capacity	33.5 Gallons (Double-Wall Metal Tank)
Fuel Consumption (50% Load)	1.03 Gallons/hr
Amperage (240V)	83 Amps
Noise Level (Run / Exercise)	70 dBA / 65 dBA
Enclosure Material	Sound-Attenuated Aluminum
Weight & Dimensions	1528 lbs \| 81" x 31" x 51"

Core Features & Benefits

Mitsubishi 2.5L Diesel Engine: Liquid-cooled, 4-cylinder engine designed for continuous heavy loads.
Automatic Operation: Pairs with a Generac ATS to restore power within seconds of a utility outage.
Evolution™ Controller: Smart digital display for monitoring operation, battery status, and maintenance needs.
High Efficiency 1800 RPM: Reduced wear and tear compared to 3600 RPM models, ensuring a longer product life.
Safety Shutdown Protection: Automatic protection for high coolant temperature, low oil pressure, and overspeed.

Installation & Requirements:

Transfer Switch is sold separately (Professional consultation required).
Requires a 12V, 700 CCA Battery (not included).
Requires a prepared concrete mounting pad for stable installation.
Professional installation by a licensed electrician and fuel technician is mandatory.

Brand: Generac Protector Diesel Series
Warranty: 5-Year Limited Factory Warranty
Certifications: UL 2200, UL/CUL 142 Listed
Origin: Engineered and Built in the USA

Generac Standby Generator, 20kW | Diesel | 1800 RPM

Product Code: G02025

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Generac Protector Diesel 20kW Standby Generator | 1800 RPM Mitsubishi Engine