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Home Generators Commercial Generators Generac 48kW Protector Natural Gas / Propane Standby Generator 277/480V 3-Phase EPA / SCAQMD Compliant | RG04845KNAC
Generac Protector Series 80kW Generator NG/LP Single Phase 120/240-Volt | RG08045ANAC
Generac Protector Series 80kW Generator NG/LP Single Phase 120/240-Volt | RG08045ANAC $19,995.00
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Generac 48kW Protector Natural Gas / Propane Standby Generator 120/240V 3-Phase EPA / SCAQMD Compliant | RG04845JNAC
Generac 48kW Protector Natural Gas / Propane Standby Generator 120/240V 3-Phase EPA / SCAQMD Compliant | RG04845JNAC $13,989.00

Generac 48kW Protector Natural Gas / Propane Standby Generator 277/480V 3-Phase EPA / SCAQMD Compliant | RG04845KNAC

$13,989.00

  • Generac 48kW Generator Protector Series 277/480V
  • California / Massachusetts Air Quality Emissions Compliant
  • Made in the USA
  • Natural Gas or Propane 4.5 Liter 4-Cylinder 1800 RPM Engine
  • Utility-Grade Power—Less than 5% THD for Electronics and Appliances.
  • Low-Speed Quiet Self-Test runs weekly, bi-weekly, or monthly.
  • Generac 5-Year Limited Warranty—Extended Warranty Available
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Category: Commercial Generators
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Description

Generac 48kW Generator

The 3-Phase Generac 48kW Standby Generator offers best-in-class backup power for small business and manufacturing operations. 3-phase 277/480-Volt 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.)

Meets Massachusets and California South Coast Air Quality Management District (SCAQMD) emissions standards.

The Generac 48 kW Generator provides business offices, small retail, restaurant or agricultural operations all the 3-phase power they need to stay open and continue work without interruption. Forget power-outage worries and lost customers with a 48kW Generac Protector Series RG04845KNAC Natural Gas or LP standby generator.

Generac 48 kW Generator

Generac designs and manufactures the 3-Phase 48kW Generac Protector Series standby generator in Wisconsin. Trained, knowledgeable staff at the Customer Care center near the Milwaukee headquarters answer questions 24 hours a day, seven days a week, 365 days a year.

Made in the USA—The Generac 48 kW Generator with an inline 4-cylinder engine was designed and built in USA facilities located in Wisconsin. The engine features first-in-class dual-valve, ultra-low-pressure fuel delivery and intelligent controls for more than one hundred performance functions. The 48 kW Generac RG04845KNAC offer peak efficiency through all temperature ranges and elevations.

Utility-Grade Power—True Power Technology means safe for computers and office equipment. 48kW of generator power powers large and small appliances, manufacturing equipment, and lights plus the heavy duty motors on refrigerators, freezers, and air conditioners—all at the same time. Isochronous Frequency regulation within 0.25%. Automatic digital voltage regulation to 1%. Less than 5% THD (total harmonic distortion.)

The Generac 48kW 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 business from an outage.

Upgrade to Mobile-Link 4G LTE (sold separately) to access the generator controller using your mobile device, laptop, or desktop computer from anywhere in the world.

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 Protector Series Generac 48kW Standby Generator comes with a standard 5-year limited 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 at any location.

The New 3-Phase 277/480-Volt RG04845KNAC 48 kW Generac Generator comes with updated features and controls and a Generac purpose-built engine designed specifically for the demanding needs of a standby generator system while maintaining strict air quality emissions standards for California and Maryland.

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; RG04845KNAC

Manufacturer; Generac

Made In USA; Yes

Rated Watts; 48kW

Rated Amps; 72 Amps

Voltage; 277/480 Volts 3 Phase

Enclosure; RhinoCoat Aluminum

UL Listed; UL-2200

Decibel Rating; 68 dBA Quiet Test / 70 dBA Normal Load

Type; Standby Generator

Series Name; Protector Gas

Features

Starting System; Automatic

Mainline Breaker; 80 Amps

Battery Requirement; 12-Volt Group 27F 725 CCA

Weight; 1781 Lbs

Dimensions; 83.4 x 35 x 46

Warranty Information

Consumer Warranty; Generac 5-Year Limited Warranty

Commercial Warranty; Generac 5-Year Limited Warranty

Engine

Engine Brand; Generac

Engine Size; 4.5 Liter Inline 4 Cylinder

Engine RPM; 1800

Cooling System; Liquid Cooled

Alternator

Alternator Type; Heavy Duty Revolving Field

Frequency; 60 Hertz

Auto Voltage Regulation; Automatic Digital Voltage Regulation ± 1%

Fuel

Fuel Type; Natural Gas (NG) or 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

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Shipping & Delivery
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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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