Generac XG04045CNAC 40kW 120/208 3P Standby Generator

Generac RG04045 40 kW Liquid-Cooled Standby Generator (208/240/480V 3-Phase)

The Generac RG04045 40 kW Liquid-Cooled Standby Generator is a commercial-grade emergency power solution designed for large residential properties and commercial facilities. Powered by an industrial-grade 4.5 L 4-cylinder engine, this unit runs on liquid propane or natural gas to provide 40,000 watts of continuous standby power.

Engineered with an advanced alternator design and an aluminum enclosure, this generator incorporates Generac True Power Technology to maintain less than 5 percent Total Harmonic Distortion (THD) for sensitive electronics. Integrated Mobile Link remote monitoring allows real-time status tracking via smartphone, while the Quiet-Test self-test mode operates at reduced RPM to conserve fuel and minimize noise output.

Key Features of 40kW Generac Standby Generator

• Generac’s 26kW home standby generator can start all of your home’s large appliances, ensuring your home remains a sanctuary for you and your family.
  New alternator design that produces 230LRA or 55.2kVA starting power to meet todays and tomorrows electrical needs.
• Compact with a powerful punch
  Takes up to 68% less space*, all while offering 2.6X more power in the same size enclosure as our baseline air-cooled unit.
  *compared to competitive output liquid-cooled products
• Save up to $8,000 in product & installation costs*
  *Average savings compared to competitive output liquid-cooled products
• Generac's G-Force Engine is a purpose-built, pressure-lubricated engine capable of handling the rigors of generator use, resulting in power that’s more reliable and requires less routine maintenance than any competitive engine. 
• True Power™ Technology delivers best-in-class power quality with less than 5 percent total harmonic distortion for clean, smooth operation of sensitive electronics and appliances.
• Quiet-Test™ Self-Test Mode runs at a lower RPM for a five or twelve minute test, making generators significantly quieter than other brands while consuming less fuel.
• Mobile Link™ Remote Monitoring FREE with every Guardian Series Home standby generator allows you to monitor the status of your generator from anywhere in the world using a smartphone, tablet, or PC. Easily access information, such as the current operating status and maintenance alerts.

Technical Specifications:

• Manufacturer: Generac Power Systems
• Fuel Type: Liquid Propane or Natural Gas
• Battery Included: No
• Battery Type: Flooded Lead Acid
• Battery Size: Group 27
• Engine Type: 4-cyl In-line
• Engine Size (Liters): 4.5 L
• Weight: 1,781 lb
• Running Watts: 40,000 W
• Mobile Link: Yes
• Quiet Test: Yes
• Controller Type: 410 Controller
• Enclosure: Aluminum