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48kW Protector

Model #RG04845

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$14,899.00 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.

18” Offset –​ Generators Can Be Installed Just 18” From A Structure – ideal for tight lot lines or other space constraints.

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 1 out of 5 by from Just installed and control board issue Just had the 48kw unit installed and the installer can’t get control board to take the code. Generac not surprised by issue. Dead on arrival. No ship date or further info. This is not acceptable. I have been on hold for 15 minutes so far but I am sure the call will be futile. You need to fix this.
Date published: 2020-08-28
Rated 1 out of 5 by from Faulty Control Boards Bought a 48KW generator this month. The installer tried 3 different control boards that all had a faulty activation code. Generac never told them they were having issues with their “new and improved” models. Now we are waiting for an overnight control board that doesn’t need an activation code the day before Hurricane Laura about to hit Texas. Just hope we don’t lose power and never get to use our “$28000” generator....very unhappy
Date published: 2020-08-26
Rated 3 out of 5 by from Very very loud compared to earlier models I just had the startup on a new 48kw protector generator and was shocked at the noise level as compared to the 40kw generac unit I had installed in 2004. Unlike the older unit that was fully lined with sound suppressive insulation, this unit has air vents fully open to all the noise produced by the engine. This is going to be a huge problem with this noise in my neighborhood because I did not expect lower sound suppression on the newer unit. Unless there is some option for replacing portions of the enclosure I’m going to have to build a wall around it or something at great expense to buffer the noise. I would have liked to see more options and information from Generac on sound suppression for this unit. I should also mention that while I purchased the Mobile Link option , it was not mentioned anywhere in the user manual and was not supplied with the unit so I will need to track that down as well. The documentation should be more complete to cover the options.
Date published: 2020-03-14
Rated 5 out of 5 by from New Generac Generator We just had the generator installed. The installation was done very professionally. We have not needed to use it yet but are happy we have protection when the power goes out.
Date published: 2019-11-16
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
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48kW-RG048-QS is rated 4.5 out of 5 by 40.
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