Best Generac Rxsw100a3 Deals of Nov 2026

Updated November 10, 2026Our site contains affiliate links for which we may be compensated.
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Generac

14% Off

Generac 100 Amp Legacy Automatic Generator Transfer Switch, SE Rated | Non Integrated Surge Protection Device, Service Entrance Rated, NEMA 3R Outdoor Enclosure, Standard Smart Switch A/C Module

AUTOMATIC WHOLE-HOME BACKUP ACTIVATES THE MOMENT UTILITY POWER FAILS: senses an outage, starts your compatible Generac generator, and transfers your entire panel automatically, unlike a manual interlock kit requiring hands-on action every time
OPEN TRANSITION SWITCHING PREVENTS BACKFEED INTO THE UTILITY GRID: mechanically isolates utility and generator power so both can never connect at once, protecting line workers and your wiring while your panel switches sources safely
100 AMP SERVICE RATING SUPPORTS YOUR FULL 120V AND 240V PANEL: handles up to 24000 watts across your entire home, including 240V loads like well pumps and dryers, so you back up the whole panel instead of a limited set of circuits
BUILT IN SMART AC MODULE MANAGES UP TO 4 HVAC LOADS AUTOMATICALLY: sequences up to four air conditioning or heating loads without extra hardware, and optional Smart Management Modules add circuit control as your needs grow
NEMA 3R ALUMINUM ENCLOSURE WITHSTANDS OUTDOOR WEATHER EXPOSURE: powder-coated aluminum housing resists corrosion and moisture for reliable performance whether mounted outdoors or in a garage near your main panel
DESIGNED FOR GENERAC STANDBY GENERATORS WITH EVOLUTION OR NEXUS CONTROLS: this switch is engineered specifically for Generac home standby generators, not portable units from other brands, so confirm your generator's controller before ordering
SERVICE ENTRANCE RATING MEANS A LICENSED ELECTRICIAN MUST INSTALL IT: functions as your main service disconnect and ties directly into utility service, so local code requires a licensed electrician and permit for this installation
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100 Amp Automatic Transfer Switch Single Phase Generator Transfer Switch | Power Management Replacement for Generac RXSW100A3, NEMA 3R Outdoor Rated Aluminum Enclosure for Indoor and Outdoor Use

Superior Quality: This 100 amp transfer switch is UL listed and its housing meets NEMA 3R standards, making it rust-proof, durable, and weatherproof. It can withstand harsh weather conditions and ensure uninterrupted functionality even in rain, hail, or high winds
Seamless Power Transfer: Designed for single-phase generators, this 100A automatic transfer switch can be used to seamlessly switch from primary to backup power. Whether in industrial, commercial or residential environments, the ATS ensures power continuity and safety, avoiding service interruptions caused by power outages
Wide Compatibility: This generator transfer switch 100 amp uses integrated load management technology to manage four separate HVAC loads with no additional accessories required. As a replacement for RXSW100A3 Automatic Smart Transfer Switch, for use with Evolution or Nexus generator controllers, 8-24 kW home standby generators
Simple Operation & Maintenance: KUTTOLE 100A transfer switch has an aluminum partition inside to prevent excessive contact with internal components, ensuring absolute safety. This 100 amp switch transfer comes with a detailed installation manual. NOTE: If you are not familiar with installation and operation, we strongly recommend that you ask a professional electrician to install and operate it to achieve the ideal use effect
Dedicated Service: You will receive 1 x automatic transfer switch 100 amp perfect replacement for RXSW100A3, 1 x switch accessory, 1 x installation manual, and 1 year replacement period. From quality to service, KUTTOLE takes care of your needs throughout the process. Your satisfaction and happiness are our lifelong goals. If you have any questions or concerns, please feel free to contact us, we will provide you with satisfactory service within 24 hours
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Voniter 100A Automatic Generator Transfer Switch, Replacement for Generac RXSW100A3, 120/240V 1-Phase Service Rated ATS, NEMA 3R Indoor/Outdoor, for Evolution and Nexus Controller 8-24kW

Replacement & Compatibility: Replacement for Generac RXSW100A03 automatic transfer switch. Rated 100 Amp at 120/240V, single phase, 60 Hz, 24,000 watts, for use with Generac home standby generators from 8 kW to 24 kW equipped with Evolution or Nexus controllers. Not for portable generators or other generator brands - confirm your generator model and controller before ordering.
Electrical Ratings: 100 A maximum utility input and 100 A maximum generator input; 120/240 VAC single phase; 24,000 W maximum load; 2-pole; conductor lug range 2/0 - #14 (Cu/Al); 10,000 A withstand rating. Supports both 120V household circuits and 240V loads such as well pumps, dryers and central air conditioning.
Open Transition & Safety: Open-transition switching disconnects utility power completely before connecting generator power, so the two sources are never live at the same time - this prevents dangerous backfeed into the utility grid and protects line workers.
All-Weather NEMA 3R Enclosure: Housed in a corrosion-resistant aluminum NEMA 3R enclosure with electrostatically applied baked powder coat finish, rated for both indoor and outdoor installation. Shields internal components from rain, snow, sleet, ice and debris. An internal aluminum barrier limits accidental contact with live parts.
Services: Please don't hesitate to contact us at any time if you need further assistance or have any additional questions. Our dedicated customer service team is here to assist you and ensure your satisfaction. Thank you for choosing our brand, and we look forward to serving you again in the future.
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Fenglesha 100 Amp Automatic Transfer Switch Replacement for Generac RXSW100A3,w/Power Management 120/240V, 1-Phase, Open Transition Service Rated, NEMA 3R Aluminum Enclosure for Indoor and Outdoor Use

100 Amp Automatic Smart Transfer Switch Replacement For Generac RXSW100A3 Compatible With 8-24 Kw Home Standby Generators
This 100 Amp Automatic Transfer Switch Is Used For Transferring Electrical Load From A Utility (Normal) Power Source To A Generator (Standby) Power Source. Transfer Of Electrical Loads Occurs Automatically When The Utility Power Source Has Failed Or Is Substantially Reduced And The Generator Source Voltage And Frequency Have Reached An Acceptable Level
Automatic Transfer Switches Are Housed In An Aluminum Nema 3R Enclosure, With Electrostatically Applied And Baked Powder Paint To Give Options As To Whether To Install Indoors Or Outdoors, This Enclosure Protects The Internal Components Of The Switch From Rain, Snow, Ice, And Debris.
Using The Smart A/C Module Management Technology, Four Individual Hvac Loads Can Be Managed With No Additional Accessories Required.
Single-Phase, 100 Amp , 120/240-Volt.Easy Installation, Comes With Instructions
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Generac

23% Off
Good Seller
50–100 sold/mo

Generac 7006 Load Manager, 100 Amp, Efficient Wire-Free Technology, Customizable Load Prioritization, LED Status Display, Gray

BROAD GENERATOR COMPATIBILITY: Works with any single-phase standby generator that produces standard 60 Hz AC output, including Generac air-cooled and liquid-cooled models — single-phase 240V only, not for three-phase systems
SCALE UP TO 8 MODULES PER SYSTEM: Install up to eight 100A Load Managers on a single generator system to manage multiple large appliances independently, with each module requiring a unique priority number
WIRE-FREE FREQUENCY SENSING TECHNOLOGY: No control wires to the transfer switch are needed; the module monitors generator output frequency autonomously and sheds loads the moment Hz drops below threshold
NEMA 3R RATED FOR INDOOR OR OUTDOOR MOUNTING: Enclosure withstands rain, sleet, and ice formation across an operating range of -22°F to 122°F, sized at 7.0"H x 11.4"W x 5.3"D for flexible placement
8-LEVEL PRIORITY DIAL FOR CUSTOMIZED LOAD RECOVERY: Assign each module a unique priority 1–8; lower numbers recover power first after a shed event, with each step adding a 15-second staggered delay to prevent re-overload
GENERATOR LOCKOUT MODE BLOCKS NON-ESSENTIAL LOADS: Set any module to lockout to permanently prevent that appliance from drawing generator power during an outage, while still allowing it to run normally on utility power
EXTERNAL LED STATUS DISPLAY WITH 5 CODED STATES: Diagnose system status without opening the enclosure; solid green means load connected, 1-second flash means startup delay, and 3-second flash means 30-minute overload lockout is active
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Generac

Generac RTSW100J3 100-Amp Service Rated 3-Phase Outdoor Transfer Switch

Robust Enclosure: The Generac RTSW100J3 transfer switch is housed in a durable aluminum NEMA/UL Type 3R enclosure with an electrostatically applied powder coating. This provides excellent protection against outdoor elements
Heavy-Duty Contactors: Equipped with a heavy-duty Generac contactor, this transfer switch delivers reliable and efficient power transfer. The contactor is UL recognized and designed for years of dependable service
Intelligent Control: The controller integrated into the generator handles all the essential functions of timing, sensing, and exercising, as well as transfer commands. This ensures smooth and efficient power transitions
Five-Year Limited Warranty: Generac stands behind the quality and durability of the RTSW100J3 transfer switch with a five-year limited warranty. This warranty provides added assurance and protection for your investment, giving you peace of mind
Easy Installation: The service entrance design of the RTSW100J3 transfer switch allows for a single-person installation. It is designed to meet UL 1008 standards for optical standby applications, ensuring safe and reliable operation
Easy Installation: Generac recommends your new transfer switch to be installed by a certified and licensed electrician
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Generac

Generac RTSN100K3 Generator Transfer Switch 100-Amp 277/480 3 NEMA 3R CUL - Efficient Power Management - Discontinued

Robust Enclosure: Housed in an aluminum NEMA/UL type 3R enclosure with electrostatically applied and baked powder paint, ensuring durability and protection against the elements
Heavy-Duty Contactor: The Generac contactor is a UL and CUL recognized device designed for years of reliable service. The controller at the generator handles all timing, sensing, exercising functions, and transfer commands
Efficient Power Management: Through the use of digital power technology (DPM), this switch can manage up to 4 individual HVAC (24 VAC controlled) loads with no additional hardware required, providing optimized power distribution
Smart Management Compatibility: When used with smart management modules, this transfer switch can efficiently manage up to 8 more loads, offering a flexible and installation-efficient power management solution
Discontinued by Manufacturer: Please note that this product has been discontinued by the manufacturer, so availability may be limited. Contact us for alternative solutions or similar products
Easy Installation: Generac recommends your new transfer switch to be installed by a certified and licensed electrician
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Generac

Generac 100 Amp Next Gen Automatic Generator Transfer Switch | Non Integrated Surge Protection Device, Non Service Entrance Rated, Hardened Fuse Control Module

100A NON-SERVICE ENTRANCE ATS FOR RESIDENTIAL STANDBY SYSTEMS: Rated at 100 amps on a 120/240V single-phase circuit, this ATS installs downstream of your existing main breaker to automatically manage backup power for essential home loads during utility outages
FULLY AUTOMATIC TRANSFER — ALL SENSING AND TIMING HANDLED BY THE GENERATOR CONTROLLER: Power monitoring, transfer commands, engine warmup, and cooldown sequences are managed automatically, so backup power activates within seconds of an outage without any manual steps
OPEN-TRANSITION SWITCHING PHYSICALLY BLOCKS UTILITY BACKFEED: The open-transition design disconnects utility power completely before connecting generator power, ensuring both sources are never live simultaneously and protecting utility workers and your equipment
BROWNOUT PROTECTION WITH HARDENED CONTROL MODULE: Integrated brownout detection monitors utility voltage and initiates generator transfer when voltage drops below 65%, preventing appliance damage from sustained low-voltage conditions before a full outage occurs
NEMA 3R ALUMINUM ENCLOSURE RATED FOR OUTDOOR INSTALLATION: The corrosion-resistant aluminum housing with electrostatically baked powder coat deflects rain, sleet, snow, and ice, allowing indoor or outdoor mounting at or near the electrical panel
COMPATIBLE WITH GENERAC EVOLUTION AND NEXUS CONTROLLER GENERATORS: Engineered for single-phase Generac Home Standby and Guardian generators using Evolution or Nexus controllers, with conductor lug range of #14 to 1/0 AWG (Cu/Al) for flexible wiring
PROFESSIONAL INSTALLATION REQUIRED UNDER NEC ARTICLE 702: This switch must be installed by a licensed electrician in compliance with NEC 702 optional standby system requirements — select models include a fast-mount enclosure system that can save installers 30 or more minutes
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Our #1 Pick Today
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Generac

14% Off

Generac 100 Amp Legacy Automatic Generator Transfer Switch, SE Rated | Non Integrated Surge Protection Device, Service Entrance Rated, NEMA 3R Outdoor Enclosure, Standard Smart Switch A/C Module

AUTOMATIC WHOLE-HOME BACKUP ACTIVATES THE MOMENT UTILITY POWER FAILS: senses an outage, starts your compatible Generac generator, and transfers your entire panel automatically, unlike a manual interlock kit requiring hands-on action every time
OPEN TRANSITION SWITCHING PREVENTS BACKFEED INTO THE UTILITY GRID: mechanically isolates utility and generator power so both can never connect at once, protecting line workers and your wiring while your panel switches sources safely
100 AMP SERVICE RATING SUPPORTS YOUR FULL 120V AND 240V PANEL: handles up to 24000 watts across your entire home, including 240V loads like well pumps and dryers, so you back up the whole panel instead of a limited set of circuits
BUILT IN SMART AC MODULE MANAGES UP TO 4 HVAC LOADS AUTOMATICALLY: sequences up to four air conditioning or heating loads without extra hardware, and optional Smart Management Modules add circuit control as your needs grow
NEMA 3R ALUMINUM ENCLOSURE WITHSTANDS OUTDOOR WEATHER EXPOSURE: powder-coated aluminum housing resists corrosion and moisture for reliable performance whether mounted outdoors or in a garage near your main panel
DESIGNED FOR GENERAC STANDBY GENERATORS WITH EVOLUTION OR NEXUS CONTROLS: this switch is engineered specifically for Generac home standby generators, not portable units from other brands, so confirm your generator's controller before ordering
SERVICE ENTRANCE RATING MEANS A LICENSED ELECTRICIAN MUST INSTALL IT: functions as your main service disconnect and ties directly into utility service, so local code requires a licensed electrician and permit for this installation
Details & specs
Check Price
on Amazon.com
Disclaimer: While we make every effort to ensure accuracy, we cannot guarantee that all product specifications, pricing, discounts, and details are complete or error-free. Because information is subject to change, we recommend verifying all details directly with the retailer prior to making a purchase. As an Amazon Associate, we earn from qualifying purchases.

10 Generac Rxsw100a3 deals are available from: Amazon, starting from $225.39.

The biggest discount we found is 23% on Generac 7006 Load Manager, 100 Amp, Efficient Wire-Free Technology, Customizable Load Prioritization, LED Status Display, Gray (7006) at Amazon.

The lowest price we found is $225.39 while the highest is $8,266.64. Prices for the best Generac Rxsw100a3 deals average at $1,412.57.