Generac 45kW Protector® Series Standby Generator
Commercial-Grade Power for Large Homes, Multi-Unit Properties & Light Commercial Use
When your power needs go beyond the basics, the Generac 45kW Protector® Series delivers robust, automatic backup power engineered for large residences, custom estates, multi-unit properties, and light commercial applications. Designed to kick in seamlessly during outages, this standby generator keeps essential systems, HVAC, appliances, communications, and business-critical equipment running without interruption.
Built for strength, efficiency, and reliability, the Generac 45kW Protector is ideal for homeowners and businesses that demand continuous, utility-level performance whenever power is lost.
What Makes the Protector Series Such a Great Choice?
Generac’s Protector Series offers benefits that competitors can’t match. Installation flexibility and cost reduction. Sophisticated yet intuitive controls. Quiet operation. Supported by a 24/7/365 customer support team at our corporate headquarters and a nationwide dealer network of more than 6,000 strong. The best liquid-cooled engine packs more power into a smaller footprint – ideal when space is a premium. The neutral styling, color and small footprint fit unobtrusively into landscaping. Clean burning, continuous fuel choice of natural gas to LP.
Powerful Performance with True Power™ Technology
The 45kW Protector’s True Power™ Technology provides industry-leading power quality with less than 5% Total Harmonic Distortion (THD)—delivering clean, smooth electrical output that protects sensitive electronics like servers, medical equipment, home theaters, and smart home systems.
Whether it’s a planned outage or severe weather event, count on clean, dependable energy that keeps your systems safe and operational.
Intelligent Evolution™ Controller
The advanced Evolution™ Controller makes system management intuitive and efficient. With a multilingual LCD display, backlit controls, USB flash capability for updates, smart battery charging, and voltage adjustment features, you get complete control over your generator’s performance and diagnostics.
Backed by Industry-Leading Warranty Protection
Built with durability and peace of mind in mind, the 45kW Protector comes with Generac’s robust limited warranty options including 5, 7, or 10-year coverage. With nationwide dealer support and 24/7 customer assistance, you’re covered long after installation.
Ideal for Tough Installations
Generac’s Protector Series supports installation as close as 18″ from a structure, offering flexibility that many competitive units simply can’t match. This space-saving capability makes the 45kW Protector perfect for properties with limited clearance or complex layout challenges.
Rugged Design Meets Residential-Friendly Footprint
Although engineered for high output, the 45kW Protector maintains a compact, landscape-friendly design that blends unobtrusively into most property settings. Its all-aluminum, RhinoCoat™ powder-coated enclosure is corrosion-resistant and built to withstand harsh weather conditions year-round.
Quiet-Test™ Mode Reduces Noise
Weekly self-tests are essential to generator health, and with Quiet-Test™ Mode, those tests run at a lower, quieter RPM. The schedule is fully programmable (weekly, bi-weekly, or monthly) so your generator stays ready without disrupting your peace.
Mobile Link™ Monitoring Included
Stay connected no matter where you are with Mobile Link™ Remote Monitoring, included as standard with every Protector Series generator. Access real-time status updates, maintenance alerts, and system health from any smartphone, tablet, or PC.
The Generac 45kW Protector® Series is the dependable choice for high-demand power needs, powerful enough for business use, smart enough for homes that won’t settle for anything less than continuous, clean energy.