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48kW Protector

Model #RG04845

Starting At

$16,329.00 MSRP Where To Buy

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Generac Protector 48kW Standby Generator

Looking to back up your entire home or commercial business? Consider the Protector Series gaseous automatic backup generator line. These units power all appliances, electronics, pumps and motors during power outages, allowing you to continue living life comfortably and keeping business operating without interruption.

 What Makes the Protector Series Such a Great Choice?
The Generac 4.5L is a purpose-built engine designed from the ground up by Generac and made in Wisconsin. Generac is one of the only manufacturers to design & produce a complete generator which includes our own engine, alternator, fuel system, controller and enclosure in the U.S.

Generac’s 22kW to 150kW product packs more power into a smaller footprint - ideal when space is a premium.  The neutral styling, color and small footprint fits unobtrusively into landscaping.
 
The Generac 4.5L engine intensifies best-in-industry performance and reliability.  The purpose-built engine is at the heart of a new generator designed from the ground up by Generac and made in Wisconsin, USA. Generac is one of the few manufacturers producing a complete generator – engine, alternator and controller.

Generac Designed & Built Engine – Generac Designed & Built Engine Purpose-built exclusively for generators, in Wisconsin, USA*. Utilizes the first in class, dual-valve ultra-low pressure fuel delivery system and intelligent proprietary engine controls that manage over 100 performance functions to ensure peak efficiency in all temperature ranges and elevations. The engine consumes 25% less fuel than previous engines, is capable of operating at the lowest fuel pressure in the industry at 3.5” of water column while still providing excellent motor starting capability. *Assembled in the USA using domestic and foreign parts.

True Power™ Technology – Delivers utility-grade power quality with less than 5% total harmonic distortion (THD) for clean, smooth operation of sensitive electronics and appliances.  Generac controlling its high-efficiency alternator design and production insures industry-leading surge protection, performance, and longevity.

Small Footprint Generac liquid-cooled product packs more power into the smallest footprint – ideal when space is a premium. The neutral styling, color and small footprint fits unobtrusively into landscaping.

Smart, User-Friendly Controls – Generac’s Evolution™ Controller is visible and accessible without opening the generator enclosure. The Evolution Controller features a multilingual LCD display that allows users to monitor and track maintenance intervals to ensure your generator is always in top operating condition.

Tough, Durable All-Aluminum Enclosures – Our RhinoCoat™ powder-coated finish helps make corrosion-resistant aluminum perfect for all weather conditions. Protector units are shielded from the inside out - a durable coating protects the internal frame from rust.

Quiet-Test™ Self-Test Mode – runs at a lower, quieter RPM for a five or twelve minute test, to ensure the system is running properly while consuming less fuel. Quiet-Test Self-Test mode can be programmed to run weekly, bi-weekly, or monthly.

Mobile Link™ Connectivity – 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 the generator’s maintenance schedule. Connect your account to an authorized service dealer for fast, friendly and convenient assistance. With Mobile Link, your generator is always in the palm of your hand. Compatible with the Mobile Link 4G LTE cellular accessory (sold separately).

5-Year Limited Warranty for automatic standby generators. Extended warranty options available.

Generac <strong>Protector 48kW</strong> Standby Generator
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Rated 3 out of 5 by from Not up and running yet to get a good nap My 48K generator came with a dent on the side which I took a picture of but didn’t seem to be enough so we live with a dent. My local Electrician can’t keep the machine running and then when he did get it running the circuitboard blew up so presently still don’t have it running. Will get back to you when she’s up and running without any mechanical or electrical issues. Tom
Date published: 2019-10-31
Rated 5 out of 5 by from Excellent Quiet Backup This is an excellent, quiet backup generator. I particularly like the V-8 engine and the aluminum enclosure (which should avoid the rust problems that I have experienced with a previous steel-enclosed generator). I would suggest that the shut-off switch mounted outside the lockable controls makes tampering a little too easy. If an emergency shut-off is needed, it should be wired so as to be operable ONLY while the generator is running.
Date published: 2019-07-29
Rated 4 out of 5 by from Response to questions were done on a timely manner, thanks. Your material said access to a Tech was 24/7. Not true Great product, I’ve had a smaller unit for years Was and is still dependable. Look forward to many years of safe and dependable service.
Date published: 2019-07-25
Rated 5 out of 5 by from Love The Automated Features Hasn't been asked to perform yet, but installing contractor has one and swears by its value and reliability. Just in case, I bought the 10 year extended warranty. Live in mountains and lose power regularly from ice storms. Feel much more secure now.
Date published: 2019-07-04
Rated 5 out of 5 by from Great Home House Generator This is my 4th Generac generator. They are perfect for what I wanted. They run the house during outages and have been reliable, efficient machines. Feel secure with these generators.
Date published: 2019-07-01
Rated 4 out of 5 by from Very quiet for such a large generator Very quiet for such a large generator. I do not like the extra kill switches they are too easy to bump and cause the machine to show a code or shut down. Changing the orifice from natural gas to propane is very difficult I had to make a special flat blade device to remove the orifice which meant I had to remove the whole internal regulator, this needs to be changed.
Date published: 2019-05-17
Rated 5 out of 5 by from great generator so far just finished the install. the conversion to LP gas was a challenge as the location of the orifice required removing the whole solenoid assembly and then finding a tool with a wide enough blade to install the LP gas orifice.
Date published: 2019-04-19
Rated 5 out of 5 by from Everything great except no wifi It would be nice if this had a wifi app that would alert when it turns on, otherwise very nice unit. Powers the entire house with the homes seven panels located thru-out the home. 400 amp service.
Date published: 2019-04-09
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48kW-RG048-QS is rated 4.8 out of 5 by 36.
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