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Home Generators Commercial Generators Generac Protector 48kW Natural Gas or Propane Standby Generator 120/240-Volt Single Phase | RG04845ANAX
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Generac 48kW Protector Series 120/208V 3-Phase Generator Natural Gas or Propane | RG04845GNAX $11,745.00
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Generac Protector 48kW Natural Gas or Propane Standby Generator 120/240-Volt Single Phase | RG04845ANAX

$11,745.00

  • 48kW Generac Protector Generator RG04845ANAX
  • Built in the USA
  • Utility-Grade True Power Technology Less than 5% THD
  • Smart User-Friendly Evolution Controller LCD Display
  • Quiet-Test Low-Speed Programmable Self-Test
  • Mobile Link Connectivity to monitor generator status from anywhere in the world.
  • RhinoCoat Corrosion Resistant Aluminum Enclosure
  • Generac 5-Year Limited Warranty—Extended Warranty Available
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Category: Commercial Generators
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Description

Generac 48kW RG04845ANAX

The Generac 48kW Protector Series Standby Generator offers best-in-class backup power for large or custom homes, small businesses, and agricultural operations. The single-phase 120/240-volt generator with True Power Technology provides clean, smooth power of the same or better quality as most electric utilities with less than 5% Total Harmonic Distortion (THD.)

The 48 kW Generac standby generator Powers all your home’s appliances and air conditioners, lights and conveniences, pool pumps and heaters, electric ranges, clothes dryers, and water heaters. Business offices, small retail or agricultural operations have all the power they need to stay open and continue work without interruption. With a Generator Protector Series RG04845ANAX Natural Gas or Propane-powered standby generator, worrying about power outages becomes a thing of the past.

Note: National Fire Protection Association article 37 (National Building Code) for the installation of Internal Combustion Engines requires a minimum 3-foot clearance between a building and this generator, and 5-feet to the nearest vent, window, door, or other opening. Check with your local building code authority for additional placement and/or installation requirements.

Generac 48 kW Generator

Generac designs and manufactures the 48kW Protector Series standby generator in Wisconsin. They staff their Customer Care center located near their Milwaukee, Wisconsin headquarters 24 hours a day, seven days a week, 365 days a year. Trained and knowledgeable staff answer questions any time of the day or night.

Their purpose built 4.5L Generac 4-Cylinder was designed and built in their USA facilities located in Wisconsin. Featuring first-in-class dual-valve, ultra-low-pressure fuel delivery and intelligent engine controls for more than one hundred performance functions, the Generac RG04845ANAX delivers peak efficiency through all temperature ranges and elevations.

True Power Technology ensures utility-grade power. Safe for sensitive electronics—runs appliances and lights—powers heavy duty motors on air conditioners and well pumps. All at the same time. Isochronous Frequency regulation within 0.25%, automatic digital voltage regulation to 1%, and less than 5% total harmonic distortion

The Evolution Controller with LCD display is smart, user-friendly, and viewable without opening the generator cabinet. Monitor generator performance, review status logs, and track maintenance to keep your Generac 48 kW Generator in top condition and ready for the next power outage.

Generac’s proprietary Quiet-Test self-test mode runs the generator at a lower speed during a five or twelve-minute self-test while it performs diagnostics and exercises the generator. Program regular exercise at weekly, bi-weekly, or monthly intervals to ensure the generator is always ready to protect your home or business from an outage.

Wireless Mobile-Link comes standard on the Generac 48kW. Access the generator controller from anywhere in the world on any mobile device, laptop, or desktop computer. The optional Mobile-Link 4G LTE (sold separately) utilizes the cellular network for reliable communications during outages and natural disasters.

Inside, a durable protective coating prevents rust on the 48 kW Generac frame. Outside, the Rhino-Coat Powder-coated finish on the aluminum cabinet forms a corrosion resistant barrier under the harshest environmental conditions.

The Generac 48kW Protector Series Standby Generator comes with a standard 5-year limited consumer warranty. Norwall offers extended warranty options on the Generac 48 kW Generator.

Protector Series 48 kW Generac

The Generac 48kW with its small footprint and neutral color blends into the local landscape. Perfect for tight spaces in yards or any commercial location.

The New RG04845ANAX 48 kW Generac Generator replaces the RG04854ANAX Standby with updated features and controls and a new Generac purpose-built engine designed specifically for the demanding needs of a standby generator system.

Requires a 12-Volt Group 27F 725 Cold Cranking Amp (CCA) battery, not included and available locally at automotive supply stores, home centers, agricultural supply, and department store retailers.

Product Specifications

Model

Model Number; RG04845ANAX

Manufacturer; Generac Power Systems

Made In USA; Yes

Rated Watts; 48kW

Rated Amps; 200

Surge Amps; 300

Voltage; 120/240 Volts Single Phase

A/C Ton Rating; 5-Ton and Larger

Enclosure; Aluminum with Rhino-Coat Finish

UL Listed; UL-2200

Decibel Rating; 70 dBA under normal load

Type; Standby Generator

Series Name; Protector Gas

Features

Starting System; Automatic

Low Oil Alert; Yes

Mainline Breaker; 200 Amps

Battery Requirement; 12-Volt Group 27F 725 CCA (battery not included)

Weight; 1781 Lbs

Dimensions; 83.4 x 35.0 x 46.0

Warranty Information

Consumer Warranty; Generac 5-Year Limited Consumer Warranty

Commercial Warranty; Generac 5-Year Limited Consumer Warranty

Engine

Engine Brand; Generac

Engine Size; 4.5 Liter Inline 4 Cylinder

Engine RPM; 1800 RPM

Cooling System; Liquid Cooled

Alternator

Alternator Type; Separately Excited Revolving Field

Frequency; 60 Hz

Auto Voltage Regulation; Digital AVR

Fuel

Fuel Type; Natural Gas (NG) or Liquid Propane (LP)

Fuel Gauge; No

NG Power Capacity; 48kW

LP Power Capacity; 48kW

NG Consumption @ Full Load; 604 cubic-feet per hour

NG Consumption @ Half Load; 336 cubic-feet per hour

LP Consumption @ Full Load; 6.61 gallons per hour

LP Consumption @ Half Load; 4.16 gallons per hour

Shipping & Delivery
wd-ship-1
wd-ship-2

Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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    At X Factors Motorsports, we specialize in high-performance engines, outboards, and premium automotive equipment. With expert support, fast shipping, and trusted brands, we help builders, racers, and enthusiasts power their passion — one project at a time.

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