Generac XG04845 Protector Series 48kW 1-phase Generator Features:
Generac XG04845 48kW 1-Phase Generator
The Generac XG04845 is the most powerful 1-phase model in the Protector® Series, delivering a commanding 48,000 watts of standby power for large residential estates, commercial facilities, and light industrial applications. Designed to offer maximum motor-starting capacity, high surge tolerance, and continuous operation in demanding environments, this generator sets a high standard for backup power reliability.
The unit is powered by a robust 4.5-liter inline 4-cylinder Generac engine, naturally aspirated and engineered to run at 1800 RPM. This lower-speed design reduces noise, improves fuel efficiency, and extends overall lifespan. Supporting both natural gas and liquid propane as fuel sources, the generator offers controller-selectable fuel configuration—eliminating manual adjustments when switching between energy sources.
What sets the XG04845 apart is its ability to maintain ±1% digital voltage regulation and <5% total harmonic distortion (THD), a key feature of Generac’s True Power™ Technology. This ensures utility-quality electricity, safe for everything from computers to high-efficiency HVAC systems. Paired with the Power Zone® 410 controller, users gain full-color, multilingual access to diagnostics, load monitoring, engine data, and more.
Despite its exceptional output, this generator operates remarkably quietly for its size, with optional sound attenuation accessories available to further reduce operational noise. The base unit operates at low 60s dB(A) during load, while exercise mode sound levels hover near 60 dB(A), making it surprisingly neighbor-friendly for its class.
With an integrated Mobile Link™ system, owners can monitor generator status from anywhere using a smartphone or PC. From power output to fuel levels and service alerts, you stay connected to your system whether you're at home or away.
Fuel efficiency is equally impressive: the XG04845 consumes approximately 6.6 gallons of LP per hour or 604 cubic feet of natural gas per hour at full load. Its sealed ball bearings, belt-driven cooling fan, and fully enclosed exhaust system are just a few of the thoughtful features that reduce service needs and prolong equipment life.
The durable aluminum enclosure is finished with RhinoCoat™ powder-coating, wind-rated up to 145 mph, and certified to UL 2200 and EPA emissions standards, including compliance with stricter California and Massachusetts regulations.
Key Features:
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48kW 1-Phase Standby Output – Maximum output for large homes and commercial applications
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4.5L Generac Engine – Naturally aspirated, liquid-cooled engine built for longevity and efficiency
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True Power™ Electrical Output – Delivers clean power with <5% THD for sensitive electronics
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Power Zone® 410 Controller – Full system status, remote diagnostics, and onboard display
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Mobile Link™ Enabled – Monitor your generator remotely from anywhere, anytime
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Quiet Operation for Its Class – Operates in the low 60 dB(A) range, even at load
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Dual-Fuel Flexibility – Easily switch between LP and NG through digital controls
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Rugged Aluminum Enclosure – RhinoCoat™ finish resists corrosion and supports 145 mph wind ratings
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Efficient Fuel Use – Consumes 6.6 gal/hr LP or 604 ft³/hr NG at full load
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UL 2200 & EPA Compliant – Meets national and regional emissions and safety standards
With superior surge performance, utility-grade power output, and intelligent remote monitoring, the Generac XG04845 delivers the power and control needed to protect your home or business—without compromise.
