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  • Nature's Generator 125A Automatic Transfer Switch - Nature's Generator
  • Nature's Generator 125A Automatic Transfer Switch - Nature's Generator
  • Nature's Generator 125A Automatic Transfer Switch - Nature's Generator
  • Nature's Generator 125A Automatic Transfer Switch - Nature's Generator
  • Nature's Generator 125A Automatic Transfer Switch - Nature's Generator
  • Nature's Generator 125A Automatic Transfer Switch - Nature's Generator
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Nature's Generator 125A Automatic Transfer Switch

Nature's Generator 125A Automatic Transfer Switch

$599.99
$599.99
Sale Sold out
Not sure if Nature's Generator 125A Automatic Transfer Switch is the right fit?
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• Seamless Automatic Power Transfer: Automatically detects utility outages and switches to backup power instantly—no manual action required for continuous, reliable operation.
• Broad System Compatibility: Works with most solar generators, battery backup systems, grid-tie inverters, and gas generators. Supports 120V, 120/240V, and 120/208V systems and is fully compatible with AFCI and GFCI breakers.
• High-Capacity & Expandable Design: Rated at 125A with 24 circuit spaces, expandable up to 48 circuits using tandem breakers to accommodate expanding power needs.
• Rugged, Weather-Resistant Enclosure: Built with a NEMA 3R-rated enclosure to protect against rain, dust, and harsh weather, suitable for both indoor and outdoor installations.
• Advanced Control & Manual Override: Features a centralized control console for managing settings, testing system functionality, and manually overriding power sources for maintenance or user preference.
• Certified for Safety & Code Compliance: Meets rigorous safety and performance standards including UL 1008 and CAN/CSA C22.2 No. 178.1, with documentation showing compliance under ISO/IEC Guide 17067.

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125A Automatic Transfer Switch
$599.99
$599.99
Sale Sold out

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Nature's Generator 125A Automatic Transfer Switch
Features Tech Specs FAQS

Features

Explore the built-in capabilities designed to deliver safe, reliable, and seamless power switching for home and backup systems.

Manual Override

Allows you to safely switch power sources manually when automatic operation is not preferred or unavailable.

Centralized Console

Provides a single, easy-to-access control point for monitoring and managing your home’s power flow.

NEMA 3R Enclosure

Built for indoor or outdoor installation, offering protection against rain, dust, and harsh weather conditions.

Supports Up to 48 Circuits with Tandem Breakers

Designed to manage a large number of household circuits, giving you flexible and organized power distribution.

Easy to Install. Flexible to Use. Ready for Whole-Home Power.

Designed for quick setup, flexible system compatibility, and reliable power management to support whole-home backup needs.

Built for Whole-Home Backup

Versatile Applications

Easy Installation

Built for Whole-Home Backup

Versatile Applications

Easy Installation

Advanced 125A Transfer Solution

Engineered to support large electrical loads with flexible circuit expansion and organized power control.

About the Product
125A Automatic Transfer Switch
1 125A, 24-Space / 48-Circuit automatic transfer switch an industry-first, universal model compatible with most solar generators.
2 Battery Backup Ready – ideal for energy storage solutions (ESS) and backup battery systems as demand rises.
3 Versatile Voltage – supports 120/208V or 120/240V applications.
4 Seamless Integration – easily connects with existing home load centers to automatically switch to backup power during grid outages.
5 Optional Semi-Surface Mount Kit – available separately for additional installation flexibility.

Tech Specs

Find all the essential technical details of your automatic transfer switch, including amperage, voltage compatibility, and installation features.

Technical Overview
125A Automatic Transfer Switch

Specification

Power Rating
125A

System Voltage
120 V~ (L-N) / 208V~ (L-L) / 240V~ (L-L)

Number of Spaces
24 spaces

Number of Circuits
Expandable to 48 circuits with tandem breakers

Dimension and Weight

35⁷⁄₁₆*14¼*6⁵⁄₁₆ inches
(900*360*160 mm)

58 lbs(26.3 kg)

Certification*

UL 508A

UL1008

CAN/CSA C22.2 No. 178.1

What's In The Box?

125A Automatic Transfer Switch

1* Automatic Transfer Switch
1* Manual Override Handle
4* Isolation Pads
1* User Manual

Documents
125A Automatic Transfer Switch User Manual
Download
Certification: CAN/CSA C22.2 No. 178.1
Download

FAQS

Answers to common questions about setup, usage, and power system compatibility.

How does an Automatic Transfer Switch work?

An ATS automatically detects a power outage and switches your home to backup power without manual intervention.

Which ATS is best for whole-home backup?

The 125A ATS is ideal for whole-home coverage, while 30A and 50A ATS models are suited for partial or essential-load backup.

Do ATS models support 120V and 240V systems?

Yes, compatible ATS models support both 120V and 120V/240V systems depending on configuration.

Can I still control the switch manually if needed?

Yes, select ATS models include a manual override for added flexibility and safety.

Is professional installation required for ATS units?

Yes, ATS installation must be performed by a licensed electrician to meet electrical codes and safety standards.

Questions & Answers

Have a Question?

Ask a Question

  • Is this 125 A Automatic Transfer Switch UL listed? If so, could you provide related documents?

    Hi Victor,

    Thank you for reaching out! You can click the link below to check the certifications of the 125A Automatic Transfer switch. If you have any follow-up questions, you may reach our support directly via (800) 975-7909, or email us at support@naturesgenerator.com. We'll be more than happy to assist you!

    https://cdn.shopify.com/s/files/1/2637/1868/files/DSS_SGSNA_25_SH_00221U.pdf?v=1749427380

    Regards,
    Nature's Generator Support Team

  • Do you have any plans to have this for 200 A homes. Most newer electrical systems are being set for 200A.

    Hi Calvin,

    Thank you for reaching out! As of now, the 125A Automatic transfer switch is the biggest rated transfer switch that we have however, we will take your concern as a feedback to provide a better product and services for our customers. If you have any follow-up questions, you may reach our support directly via (800) 975-7909, or email us at support@naturesgenerator.com. We'll be more than happy to assist you!

    Regards,
    Nature's Generator Support Team

  • What is the max breaker amperage for the branch circuits?

    Hi Everett,

    Thank you for reaching out! The maximum breaker amperage size that you can use with the 125A automatic transfer switch is 240v 50amp. If you have any follow-up questions, you may reach our support directly via (800) 975-7909, or email us at support@naturesgenerator.com. We'll be more than happy to assist you!

    Regards,
    Nature's Generator Support Team

  • This is great. Does it work with the Ecoflow delta pro ultra system?

    Hi Del,

    Thank you for reaching out! The Nature's Generator 125A automatic transfer switch can work with other brands of solar powered or battery powered generators as long as the output voltage and current are within the specifications of the automatic transfer switch. If you have any follow-up questions, you may reach our support directly via (800) 975-7909, or email us at support@naturesgenerator.com. We'll be more than happy to assist you!

    Regards,
    Nature's Generator Support Team

  • How many 240 volt breakers can this unit accommodate? Alternatively, if only tying to 120 volt circuits, can it handle two different solar generator inputs, and use them to power each 120 volt leg separately?

    Hi Jim, Thank you for reaching out.


    The unit can accommodate 12 of 240V 1-inch breakers.


    However, two solar generators cannot be used at the same time. Only one solar generator can be connected at a time to power the system.

    If you have additional queries, you may also reach us via support@naturesgenerator.com


  • What is the automatic switchover time delay when set to automatic? I.e. how many milliseconds.

    Hi Chris,

    Thank you for reaching out. There's no delay when the transfer switch is set to automatic as long as the DIP Switch is set up properly. If you have any follow-up questions, you may reach our support directly via (800) 975-7909, or email us at support@naturesgenerator.com. We'll be more than happy to assist you!

  • I see the manual states:BE AWARE OF AUTOMATIC START-UP! THIS AUTOMATIC TRANSFER SWITCH STARTS AUTOMATICALLY WHEN EITHER THE MAIN POWER SOURCE OR BACKUP SOURCE ENERGIZES THIS AUTOMATIC TRANSFER SWITCH. Is this different from most ATS?

    Hi Raymond,

    Thank you for reaching out. Nature's Generator 125A Automatic Transfer Switch is almost the same with different ATS. We're putting warnings on the manual as we value our customer's safety. If you have any follow-up questions, you may reach our support directly via (800) 975-7909, or email us at support@naturesgenerator.com. We'll be more than happy to assist you!

  • I am considering purchasing one of these auto transfer switches for our home. Currently we have a portable Westinghouse gas generator that stays plugged into the main breaker box through a gen inlet plug. When the power goes out we start our gen (has FOB) we open the main brker and the generator breaker closes and feeds the whole house. We have an interlock (between main & gen breaker, required by local light co.). Once the Nature Gen ATS is hooked up and it’s configured to feed from the grid most of the time. What happens if the power goes out? Does the Nat Gen ATS switch and attempt to feed from the back up gas generator side? If the Nat Gen ATS switches, will the ATS switch back and forth until it senses load on one side or the other? I probably need to speak to someone that has a good understanding of how this ATS works because I didn't think they were available for portable generators. Which I think this one is. Thanks. Ray

    Hi Ray,

    Thank you for your question! The Automatic transfer switch automatically switch from the grid to the back up generator as long as the back up generator is active. The best way to use the automatic transfer switch is with a generator that has a UPS feature so that you don't need to physically turn on the unit or switch the power from grid to the generator since if the automatic transfer switch will not switch to back up if it doesn't sense a power from the generator. If you have any follow-up questions, you may reach our support directly via (800) 975-7909, or email us at support@naturesgenerator.com. We'll be more than happy to assist you!

    Regards, 
    Nature's Generator Support team

  • I have the Powerhouse Hybrid Plantinum Plus system. Is there a way to get more than 30 amps to the 125A transfer switch?

    Hi Jason,

    Thank you for reaching out. Nature's Generator Powerhouse doesn't have a way to power appliances for more than 30amps. If you have any follow-up questions, you may reach our support directly via (800) 975-7909, or email us at support@naturesgenerator.com. We'll be more than happy to assist you!

  • Do you have a cell phone app to control and view the details?

    Hi Dan,

    Thank you for reaching out. As of now, we don't have an app to control and view the details with our automatic transfer switch. However, we will take this as feedback so we can improve our products and services in the future. If you have any follow-up questions, you may reach our support directly via (800) 975-7909, or email us at support@naturesgenerator.com. We'll be more than happy to assist you!