Generac XG04045C Protector Series 40kW 1-phase Generator (SCAQMD Compliant) Features:
Generac XG04045C 40kW 1-Phase Generator
The Generac XG04045C is a premium 40kW single-phase automatic standby generator from the Protector® Series, engineered to deliver clean, consistent, and uninterrupted power for both residential estates and business-critical environments. Designed for performance, efficiency, and ease of ownership, it’s a complete power solution with cellular connectivity, Quiet-Test™ mode, and an ultra-durable aluminum enclosure built to withstand extreme elements.
At the heart of this generator is a 4.5L naturally aspirated inline 4-cylinder engine running at 1800 RPM, optimized for extended service life and reduced wear. Engineered by Generac exclusively for generator use, it includes dual-valve ultra-low-pressure fuel delivery, direct electronic controls, and intelligent performance management, ensuring optimal efficiency in all operating conditions.
With a ±1% digital voltage regulator and <5% total harmonic distortion, the XG04045C delivers True Power™ Technology—providing utility-grade power that’s safe for computers, home automation systems, and sensitive medical or business electronics. The Power Zone® 410 controller offers advanced system insights and diagnostics via a full-color digital display, and comes standard with Mobile Link™ cellular monitoring, allowing owners and service providers to track system status from anywhere.
Despite its heavy-duty performance, the XG04045C runs remarkably quiet. Thanks to Quiet-Test™ self-test mode, weekly checks run at a lower RPM, consuming less fuel and producing minimal sound—just 58 dB(A) during exercise mode and 64 dB(A) during full operation.
Its compact 83.4" x 34" x 45.2" footprint fits seamlessly into tighter installation spaces, while the RhinoCoat™-protected aluminum enclosure, electro-galvanized frame, and zinc-plated fasteners provide superior corrosion resistance. Whether installed at a business or a large home, this unit is designed to look sharp and last long.
The generator is controller-selectable between LP and natural gas, making it easy to set fuel preferences without manual intervention. At full load, it consumes 5.7 gallons per hour of LP or 494 cubic feet per hour of natural gas, maintaining fuel economy without sacrificing output.
Key Features:
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40kW Single-Phase Standby Output – Full-building backup power for homes, clinics, offices, and retail
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Generac 4.5L Liquid-Cooled Engine – Purpose-built for quiet, efficient, long-lasting operation
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True Power™ Technology – Low harmonic distortion ensures compatibility with sensitive electronics
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Power Zone® 410 Digital Controller – User-friendly display with advanced diagnostics and status updates
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Mobile Link™ Monitoring Standard – Remote generator tracking via smartphone, tablet, or PC
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Quiet-Test™ Mode – Low-RPM self-tests minimize noise and fuel consumption
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Corrosion-Resistant RhinoCoat™ Enclosure – Aluminum housing built for harsh environments
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Controller-Selectable Fuel Source – Easily switch between propane and natural gas through the interface
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Efficient Fuel Use – Consumes 5.7 gal/hr LP or 494 ft³/hr NG at full load
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UL 2200 Listed & SCAQMD Compliant – Meets national safety and emissions standards
With its powerful engine, intelligent controls, and durable construction, the Generac XG04045C offers a versatile and reliable power solution tailored for those who expect uninterrupted comfort or continuity, no matter the conditions outside.
