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The generac nexus smart switch™ - 200 amp automatic transfer switch (service disconnect) is available for purchase today.

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Generac Nexus Smart Switch™ - 200 Amp Automatic Transfer Switch (Service Disconnect)

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Generac Guardian Electric Generators and AccessoriesModel: RTSD200A3
(Based on expert analysis, manufacturer ratings and customer reviews)
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
8 Reviews
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  • Features
  • Specs
  • 6
    Q&A 
  • 8
    Reviews
  • Articles
  • Accessories
Type
Service Disconnect
Amp Rating
200 @ 240 Volts (Single Phase)
Load Mgmt.
Compatible
Enclosure
NEMA 3R
Nexus™ Automatic Transfer Switch

Compatible With Generac Nexus™ or Generac R200 Controllers
Leverages digital load management (DLM) technology
Ability to manage 2 A/C units with no additional hardware
Intelligently manage 4 more loads w/ additional DLM modules
DLM Module P/N: 5937 (Sold Separately)

Service Entrance Rated
Installs between main meter and service panel
Contains load side and line side disconnecting breaker

NEMA 3R Indoor/Outdoor Rated
Aluminum, wall mountable weather-proof enclosure
Electrostatically applied and baked powder paint (Gray)

Tech Spec Summary:
Load transition type: Open Transition
Withstand rating: 22,000 Amps
Lug range: 400MCM - #4

For Use With Generac Generators Only
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Rated Amps
200 @ 240 Volts (Single Phase) Amps
Enclosure
NEMA 3R
Number of Circuit Breakers
1
Transfer Switch Style
Service Disconnect
ATS Load Prioritizing
Compatible
ATS Load Shedding
Compatible
ATS Poles
2 Poles
ATS Service Disconnect
Yes
Max Utility Input
200 Amps
Max Generator Input
200 Amps
Maximum Wattage
48000 Watts
UL Listed
Yes
Overview
Made in USA
Yes
Weight
39 Pounds
Product Length
30 Inches
Product Width
14 Inches
Product Height
8 Inches
Consumer Warranty
1 Year
UPC
696471607499
Model
RTSD200A3
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How To Library
  6 Questions
Q: What is load shedding?
by Jay Hudson from Texas on February 19, 2013

A: The following article will help explain load shedding....

Automatic Transfer Switches

by Jared, Product Expert

Q: I have a situation where two 150 amp main panels are running off one meter supply. Can one 20 KW gen and one whole house Nexis Smart Switch 200 amp service disconnect be used on this application?
by Anthony from New York on January 03, 2013

A: No, you will need to either go with one 400A switch (sold separately) or go with 2 - 150A switches.

either way you will need to purchase the generator by itself - Model 5887 instead of the prepackaged model 5875.

by Jared, Product Expert

Q: Hi Jim, I want to receive a transfer switch back ordered 12/19 after the new year, say January 4, Should I wait until end of December to order?
Or should i order now to insure I have one by jan 4.
Thank you

by Marina Chen from New York on December 08, 2012

A: Since there is such a heavy demand for generators and generator accessories right now, there is no guarantee that we will continue to have stock on these transfer switches once our order is received around the 19th. I would recommend getting your order in as soon as possible unless you can afford to wait longer if necessary.
by Jared, Product Expert

Q: Jim, First I want to say that I love your site. Very helpful information in making up my mind on sizing a perfect standby generator. I am looking at the 5875, and am almost sold.

I question I need to determing is the largest wire size that the nexus smart switch that comes in this package, and the breaker in the 5875 can handle. I am in a situation where I need to install the generator on the opposite side of the house as my load center. Initial calculation is that I will need #2 wire to run from the generator to the smart switch. Can the breaker lugs on the generator and the smart switch handle #2 wire? In the manuals posted on line I only see torque specs down to #4 wire. Appreciate your input

by David Bunk from Virginia on September 27, 2012

A: Generator Main line breaker (100A): #4 - 1/0 AWG Cu or #2 - 1/0 AWG Al.

Switch Lug Range (RTSD200A3): 400 MCM - #4

by Jared, Product Expert

Q: I have a 1980 Onan 33 KW single phase or 50 KW 3 phase diesel generator. I want to connect it to my house, which has 200 amp service. Can I use the RTSD200A3 ? There is 50 . ODDB - 15R/22956E on the model plate seriial is K800536055

The generator was just taken out of service, and they kept the transfer switch.

by Howard Todd from Maryland on July 24, 2011

A: You can only connect Generac transfer switches with Generac generators. They do not control the on/off functions of a generator. We do not offer any aftermarket transfer switches that offer this option. Sorry.

by Jared, Product Expert

Q: What is the difference between the Generac Nexus Smart Switch (100 Amp) automatic transfer switch for $349 and the Generac Nexus Smart Switch (100 Amp) automatic transfer switch (Service Entrance) for $499?

Thank you for your time and consideration.

by Cecil Camune from Illinois on January 29, 2011

A: The "Service Entrance" type automatic transfer switch has a built in shut off switch to power can be turned off to perform service on the generator without backlash from utility power. This type of switch is normally required by code to be installed if used in a whole house application and mounted between the meter and electrical panel being powered.

The "Standard" type automatic transfer switch does not include this service entrance feature and is normally installed when the generator is powering a sub-panel.
by Jared, Product Expert

Generac Guardian RTSD200A3 Reviews & Ratings
Overall Rating
Features
5/5
Quality
5/5
Performance
5/5
Value
5/5
Overall
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
Pros
I'd Buy It Again (1)
Reliable (1)
Quiet (1)
Easy To Use (1)
Cons
None to display.
8 Reviews  Sort by 
 
Stuart
Mineral, VA
Purchased from Electric Generators Direct
Purchased 8/21/12
Total Reviews
3 Reviews
REVIEWED
SEP.
12
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
Model 5875 With 2 Nexus Smart Witches
I replaced a Guardian model 04390-1 that has served me well for the last 9 years. I just wanted to upgrade so I could get my a/c units on the backup system.

My location had 3, 200 amp panels with 2 in the basement and 1 in the garage as a sub panel where the original generator was connected. I had to remove the 200 amp disconnect for garage ( panel "C" ) and use 1 of the new Smart switches to replace it, which I mounted outside by the meter.

The other smart switch I put in the... more
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00
Travel Alot
Southern, TX
Total Reviews
2 Reviews
REVIEWED
JUL.
29
2010
5 out of 55 out of 55 out of 55 out of 55 out of 5
Good So Far
I researched a lot of generators and decided to purchase the 5875 20KW air-cooled model with the Nexus smart controller/switch. The reason I settled on this decision was based on very competitive price, plus the smart switch allows this generator to handle the power needs of an entire large house.

You need to purchase a transfer switch for a standby generators, and for many generators this is a separate additional cost for this generator the switch is included.

Basically this... more
Was this review helpful?
10
David D.
Ocoee, TN
Purchased from Electric Generators Direct
Purchased 1/17/14
REVIEWED
FEB.
28
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Rural East Tennessee
Rural East Tennessee power lines trees ice/snow/wind storms = power outages.

Power outage: 15 seconds power on with excellent "Quiet Source" generator.
Pros: Easy To Use, Quiet, Reliable, I'd Buy It Again
David Recommends This Generac Guardian Product
Was this review helpful?
00
Rodger
REVIEWED
FEB.
05
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
Impressive Response
I had a question about the Generac Smart Switch, and Jim responded 2 seconds after I hit the Enter key- thanks!
Was this review helpful?
00
Ken
Helmetta, NJ
Purchased from Electric Generators Direct
Purchased 8/13/12
REVIEWED
SEP.
24
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Product
I needed to prep a client's house for a future generator set and this unit fit the bill exactly. It was easy to wire.
Was this review helpful?
00
Cecil
Purchased from Electric Generators Direct
Purchased 7/11/12
Total Reviews
2 Reviews
Total Helpful Votes
22 Helpful Votes
REVIEWED
SEP.
19
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
Works Like A Champ
After I placed the order for my smart switch it arrived in less than a week. It works like a champ and has not given us any problems.

Glad I purchased it. Money well spent.
Was this review helpful?
00
James
Fredericksburg, VA
Purchased from Electric Generators Direct
Purchased 11/6/11
Total Reviews
2 Reviews
REVIEWED
DEC.
21
2011
5 out of 55 out of 55 out of 55 out of 55 out of 5
Complicated Install Due To Home Design
My installation was quiet complicated. Electrician asked that I order a second Nexus Panel since my house had 2- 200 amp panels. He explained this would make for a cleaner installation. The Nexus panels had to be located on the exterior of the house requiring drilling several huge holes through brick. Because of my electrical room being located in the garage on a concrete slab the wiring from the generator was run through the basement up into my electrical room. Gas hook up was less... more
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00
Gregg
Frankston, TX
Purchased from Electric Generators Direct
Purchased 2/14/11
Total Reviews
3 Reviews
REVIEWED
MAR.
12
2011
5 out of 55 out of 55 out of 55 out of 55 out of 5
It Went Flawlessly
My neighbor and I installed the entire system after the generator was delivered to the slab. We found the installation instructions easy to follow. We had a certified installer check-out our installation and commission the unit. It went flawlessly.
Was this review helpful?
00
 


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Shop for the Generac Nexus Smart Switch™ - 200 Amp Automatic Transfer Switch (Service Disconnect) at Electric Generators Direct. Research Generac Guardian 696471607499 automatic transfer switches online. Find Generac Guardian RTSD200A3 automatic transfer switches & Generac 200A Service Entrance features and specifications.