Standby Generator Sizing Calulator
Standby Generator Sizing Calulator

Generac Smart Switch™ 300-Amp Automatic Transfer Switch + AC Shedding (Service Disconnect)

Generac Smart Switch™ 300-Amp Automatic Transfer Switch + AC Shedding (Service Disconnect)
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    Product Q&A
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Product Description
+
Type
Service Disconnect
Amp Rating
300
Load Mgmt.
Compatible
Enclosure
NEMA 3R
Type
Service Disconnect
Load Mgmt.
Compatible
Enclosure
NEMA 3R
Features
Features
  • 300-Amp Generac Smart Automatic Transfer Switch
  • For Generac Evolution™ & Generac Nexus™ & R200 Controllers
  • Leverages digital power management (PMM) technology
  • Ability to manage 2 A/C units with no additional hardware
  • Intelligently Manage 4 More Loads w/ Additional PMM Kit/Modules
  • PMM Starter Kit (6199) & PMM Module (6186) (Both 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
  • Steel, 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: #4 or 2-250 MCM
  • For Use With Generac Generators Only
  • *Please Note - Switch is Compatible w/ DLM Modules*
Specifications
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Rated Watts
72000 Watts
Rated Amps
300 Amps
Enclosure
NEMA 3R
Transfer Switch Style
Service Disconnect
ATS Load Prioritizing
Compatible
ATS Load Shedding
Compatible
ATS Poles
2 Poles
ATS Service Disconnect
Yes
Max Utility Input
300 Amps
Max Generator Input
300 Amps
Maximum Wattage
72000 Watts
UL Listed
Yes
Overview
Made in USA
Yes
Weight
140 Pounds
Product Length
48 Inches
Product Width
22 Inches
Product Height
10 Inches
Consumer Warranty
5 Years
UPC
696471614039
Type
Service Disconnect
Amp Rating
300
Load Mgmt.
Compatible
Enclosure
NEMA 3R
Type
Service Disconnect
Load Mgmt.
Compatible
Enclosure
NEMA 3R
Features
Features
  • 300-Amp Generac Smart Automatic Transfer Switch
  • For Generac Evolution™ & Generac Nexus™ & R200 Controllers
  • Leverages digital power management (PMM) technology
  • Ability to manage 2 A/C units with no additional hardware
  • Intelligently Manage 4 More Loads w/ Additional PMM Kit/Modules
  • PMM Starter Kit (6199) & PMM Module (6186) (Both 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
  • Steel, 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: #4 or 2-250 MCM
  • For Use With Generac Generators Only
  • *Please Note - Switch is Compatible w/ DLM Modules*
Specifications
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Rated Watts
72000 Watts
Rated Amps
300 Amps
Enclosure
NEMA 3R
Transfer Switch Style
Service Disconnect
ATS Load Prioritizing
Compatible
ATS Load Shedding
Compatible
ATS Poles
2 Poles
ATS Service Disconnect
Yes
Max Utility Input
300 Amps
Max Generator Input
300 Amps
Maximum Wattage
72000 Watts
UL Listed
Yes
Overview
Made in USA
Yes
Weight
140 Pounds
Product Length
48 Inches
Product Width
22 Inches
Product Height
10 Inches
Consumer Warranty
5 Years
UPC
696471614039
Product Specs
+
Specifications
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Rated Watts
72000 Watts
Rated Amps
300 Amps
Enclosure
NEMA 3R
Transfer Switch Style
Service Disconnect
ATS Load Prioritizing
Compatible
ATS Load Shedding
Compatible
ATS Poles
2 Poles
ATS Service Disconnect
Yes
Max Utility Input
300 Amps
Max Generator Input
300 Amps
Maximum Wattage
72000 Watts
UL Listed
Yes
Overview
Made in USA
Yes
Weight
140 Pounds
Product Length
48 Inches
Product Width
22 Inches
Product Height
10 Inches
Consumer Warranty
5 Years
UPC
696471614039
Reviews
+
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Product Q&A
(2)
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Search Product Q&A's Answered by Jared, the Generator Expert
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Trying to determine if the lugs on the load side are two each so that they can be paralleled?
Mike Kimler 
from Ohio 
September 25, 2013
Answer
Thank you for your interest in Electric Generators Direct!

The Generac Guardian, RTSY300A3 Automatic Transfer Switch is capable of being paralleled, but not in the manner in which you intend.

These switches are designed for parallel operation in applications where there are multiple service panels coming directly off of the utility meter. Each panel would be fed with its own set of utility leads. When using multiple switches, they will be connected via the control wires, and communicate in a parallel method.

It is recommended that this configuration be performed by a qualified Generac installer.

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I need a 20kW natural gas generator. But they seem to only come with a 200A panel. I believe I need a 300A panel. Is there a big price difference in purchasing a 300A panel with the generator? I didn't see it on your website. Can you tell me the price?
Peter Kearns 
from New Jersey 
July 13, 2013
Answer
If you have a specific application that does not meet the prepackaged units you would purchase the items individually instead. The packaged systems are put together by the appropriate manufacturer and cannot be altered.

Briggs does not offer a 300A switch so you would need to go to the larger 400A switch if you intend on powering the entire home and that system is already prepackaged. (Model 40396).

Generac does offer a 300A switch so you would purchase the generator by itself (Model 6250) and the switch separately (Model RTSY300A3). Just add each item to the cart and enter your state and zip for the total.

We do recommend consulting with a certified electrician for proper generator sizing and installation.
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Generac Smart Switch™ 300-Amp Automatic Transfer Switch + AC Shedding (Service Disconnect)
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