Special Nonexistent Furniture
Chat Online
877-WAYFAIR (877-929-3247)|SKU #: GDN1049

Generac 100 Amp Automatic Transfer Switch w/ Service Entrance

(View all from Generac)


Rewards: Get 3% Back ?

Free Shipping
- Order in the next and have this item delivered free by ! More


Product Details
Product Q&A
Shipping & Returns

Generac 100 Amp Automatic Transfer Switch w/ Service Entrance

This product makes the difference between a truly automatic generator set and just another generator. When the power goes out, this switch automatically senses the failure, turns on your generator, and routes electricity to the circuits of your home. No toggles to flip, no knobs to turn, no extension cords to run during a blackout. You will have the comfort and peace-of-mind knowing that your Guardian stand-by generator does everything for you...automatically!


  • Housed in a Nema 3R steel enclosure
  • Electrostatically applied powder paint
  • Service disconnect
  • Utility voltage drop-out:<60%
  • Timer to generator start: 15 seconds
  • Engine warm up delay: 10 seconds
  • Standby voltage sensor: 90%
  • Utility voltage pickup: >80%
  • Re-transfer time delay: 15 seconds
  • Engine cool down timer: 60 seconds
  • Exerciser: 15 minutes every 7 days
  • Load Transition Type: Open Transition
  • Withstand Rating (Amps): 10,000
  • Lug Range: 2/0 - #14
  • Designed to operate with a Generac R-series controller
  • UL 1008 listed for standby operation
  • External Dimensions 120/240V, 1 Phase
Show Additional Info


  • Overall: 23.5" H x 13" W x 7" D
  • Overall Product Weight: 140lbs

Generac 100 Amp Automatic Transfer Switch w/ Service Entrance

Additional Documents

Generac Brochure

Weights & Dimensions

  • Overall: 23.5" H x 13" W x 7" D
  • Overall Product Weight: 140lbs


Product Type: AutomaticFinish: Tan
Material: Metal
  • Material Details: Aluminum
Hardware Material: Stainless steel
Weather Resistant: Yes
  • Weather Resistant Details: Aluminum enclosure
Water Resistant: Yes
  • Water Resistant Details: Aluminum enclosure
Rust Resistant: YesTarnish Resistant: Yes
Frequency: 60 HertzNumber of Poles: 2
Number of Phases: 1Amperage: 100 Amps
Service Entrance Included: YesCover Included: No
Load Center Included: NoCord Included: No
Generator Wattage Meter: NoGenerator Type: Standby generator
Outdoor Use: YesCommercial Use: Yes
Eco-Friendly: YesCountry of Manufacture: United States


Assembly Required: NoInstallation Required: Yes


Product Warranty: 2 year limited 


CARB Compliant: YesNEMA Certified: Yes
UL Listed: YesUL 1008 Listed: Yes

About the Manufacturer

Since 1959, Generac Power Systems, Inc. has been a leading, innovative manufacturer and marketer of portable and standby generators, automatic transfer switches, modular paralleling systems, and small engines for recreational vehicle, residential, and commercial applications. Generac’s power systems range in output from 2 to 9,000 kilowatts.

Generac 100 Amp Automatic Transfer Switch w/ Service Entrance

We're sorry, we have no FAQs to display. 

Still have questions about this product? We're here to help

When you buy a Generac 100 Amp Automatic Transfer Switch w/ Service Entrance online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered. You can check on a delivery estimate for the Generac Part #: RTSY100A3 here. If you have any questions about your purchase or any other Generator Transfer Switches product for sale our customer service representatives are available to help.Whether you just want to buy a Generac 100 Amp Automatic Transfer Switch w/ Service Entrance or shop for your entire home, Wayfair has a zillion things home.
See something odd? Report it here.

Customer Reviews

Tell Us What You Think!

Tell us what you think about the 100 Amp Automatic Transfer Switch w/ Service Entrance. It will help us provide you with better products in the future and help your fellow Wayfair shoppers make better purchases.

Write A Review 
Average Overall Rating:
(based on 2 reviews)

Clear All
5 star
4 star
3 star
2 star
1 star


Naseem from milton, GA– Verified Buyer– Top 5 Reviewer

Great transfer switch, was easy to install deilivery was fast

Was this helpful? Yes0 No0

Quality product

robert calabrese from United States– Verified Buyer

I think that Generac is a quality product and their switch is no exception. I would tell my friend about.

Was this helpful? Yes0 No1

Related Products
Description: Switch Type: Nema 3, Outdoor Circuits: 16 Amps: 100A Service Entrance Poles, Frequency: 2, 50/60
Description: Installation Base Battery Charger Hour Meter Manages Power to All of Your Appliances Managed Whole House Power system powers your household appliances plus up to 2 air conditioners. Quick Response Automatically powers your home in seconds after sensing a power ...
Description: Included with Kit: 30A surface mount Transfer Switch, 10 ft Cord 10/4 with L14 30 ends, 30A resin Power Inlet Box (must be hardwired), Install manual, wiring harness, conduit and fittings, wire connectors Install more easily with included wiring harness ...



100 Amp Automatic Transfer Switch w/ Service Entrance is also sometimes listed under the following manufacturer numbers: RTSY100A3