Best Outdoor Generator Transfer Switches of 2026

Toby Butcher Avatar
Toby Butcher
Last Updated: 5 Feb 2026

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Outdoor generator transfer switches are essential devices for homeowners who rely on generators during power outages or in remote locations. These switches are designed to safely and seamlessly transfer power from the grid to the generator and back again, ensuring that your home appliances and electronics remain powered up during an outage. They come in a variety of sizes and configurations to suit different needs and budgets, and are built to withstand harsh outdoor conditions. If you live in an area prone to power outages or need a reliable backup power source, we recommend considering an outdoor generator transfer switch.

At a Glance: Our Top Picks

ESR 125 Amp Generator Changeover Switch Cover #TOP 1
ESR 125 Amp Generator Changeover Switch
ftb score rating icon 9.9
125 Amp Changeover Switch with Busbar Cover #TOP 2
125 Amp Changeover Switch with Busbar
ftb score rating icon 9.8
DEWIN 63A Automatic Transfer Switch for Dual Power Cover #TOP 3
DEWIN 63A Automatic Transfer Switch for Dual Power
ftb score rating icon 9.6

Top 4 Outdoor Generator Transfer Switches

#TOP 1

ESR 125 Amp Generator Changeover Switch

ESR
ESR 125 Amp Generator Changeover Switch Cover
125 Amp 240V Generator Changeover Transfer Switch in IP65 Weatherproof Enclosure

The ESR Changeover Switch is a robust 125 Amp 240V mains to generator transfer solution. It features two normally open and two normally closed contacts, ensuring versatile connections for your power needs. The IP65 weatherproof enclosure protects it from the elements, making it ideal for outdoor use. Additionally, the enclosure's plain sides can be drilled for easy cable entry, providing convenience during installation. This combination of features allows you to maintain a reliable power supply in various conditions.

What We Like
Weatherproof design
Easy cable entry
High amperage capacity
Versatile contact options
#TOP 2

125 Amp Changeover Switch with Busbar

B01CERR130
purple
125 Amp Changeover Switch with Busbar Cover
125 Amp Changeover Switch with Busbar, Generator / Mains Transfer, Single Phase, Din Rail Mount

The ESR Changeover Switch is a 125 amp device designed to seamlessly transfer between generator and mains supply. With its two-position switch, you can easily select your power source, ensuring you're never left without electricity. The switch features two normally open and two normally closed contacts, providing flexibility in your setup. This model is perfect for din rail mounting within an enclosure that accommodates a minimum of four unused single pole modules, making installation straightforward and convenient for you.

What We Like
Easy to install
Seamless power source transfer
Flexible contact options
Compact din rail design
#TOP 3

DEWIN 63A Automatic Transfer Switch for Dual Power

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DEWIN 63A Automatic Transfer Switch for Dual Power Cover
DEWIN Automatic Transfer Switch, G2R 4P 63A DIN Rail ATS Dual Power Automatic Transfer Switch Electrical Selector Switches 220V

The DEWIN Automatic Transfer Switch is designed for high performance, ensuring a seamless transition between power sources with a conversion time of less than 50ms. This means your electrical equipment remains powered without interruption. It features a flame-retardant shell, providing durability and reliability even in extreme conditions. The built-in arc extinguishing system enhances safety by quickly cooling and extinguishing arcs that may occur during operation. Additionally, its modular structure and compact design make installation easy and convenient for users.

What We Like
Fast switching under 50ms
Durable, flame-retardant construction
Built-in arc extinguishing system
Easy installation and wiring
#TOP 4

Jadeshay Automatic Dual Power Transfer Switch

ZGQ5-100/2P
white-green
Jadeshay Automatic Dual Power Transfer Switch Cover
Jadeshay Automatic Transfer Switch, Circuit Breaker AC Switching Power Supply Uninterrupted Dual Power Automatic Transfer Switch with 2 Way Controller, ZGQ5-100/2P 220V

The Jadeshay Transfer Switch offers reliable performance with its silver contacts, ensuring excellent conductivity and durability. It automatically switches to a backup power supply during power disruptions, helping you maintain a steady power source. The built-in signal output port allows for easy connection to a signal indicator, keeping you informed of the power status. Additionally, its flame retardant plastic construction provides high temperature resistance and insulation, ensuring safety and reliability for your outdoor power needs.

What We Like
Excellent conductivity and durability
Automatic power switching
Built-in signal output port
Flame retardant plastic material
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Where should generator transfer switch be located?

The transfer switch is installed between a main panel and a sub panel. The main panel connects to the non-essential loads. The sub panel connects to the essential loads. In the event of an outage, the transfer switch will only transfer power to the essential load panel.

2. Can a Generac transfer switch be mounted outside?

It can be mounted outside or inside and should be based on the layout of installation, convenience and proximity to the utility supply and load center. Install the transfer switch as close as possible to the electrical loads that are to be connected to it.

3. Can a generator transfer switch be outside?

Portable transfer switches Manual power switches can either be installed inside or outside depending on their NEMA rating. During an outage, you will need to plug the generator into the inlet box, turn on the manual transfer switch, and then turn on the portable generator.

4. Do you need a transfer switch for a standby generator?

While you might be tempted to skip a transfer switch when installing your generator, the truth is that it is almost a mandatory part of owning and using a backup power source. The only real choice you have is to use a manual switch or an automatic one.

Editor's Notes

During our outdoor generator transfer switch research, we found 105 outdoor generator transfer switch products and shortlisted 4 quality products. We collected and analyzed 7,289 customer reviews through our big data system to write the outdoor generator transfer switches list. We found that most customers choose outdoor generator transfer switches with an average price of £20.00.

The outdoor generator transfer switches are available for purchase. We have researched hundreds of brands and picked the top brands of outdoor generator transfer switches, including ESR, ESR Enterprise Ltd, DEWIN, Jadeshay.

Written by
Toby Butcher Avatar

Toby Butcher is a Horticulturist, and he earned his title as a Master Gardener in 2016. Toby has acquired a 25-year experience as a home gardener planting, designing, grooming vegetables and flowers. He is the leader of a plant group in Durham. Toby owns a blog where he publishes articles on growing and growing your flowers at home, in a vase, or in a garden.