---
product_id: 85431293
title: "100-Amp Automatic Generator Transfer Switch, Single Phase, Service Entrance Rated, NEMA 3R Outdoor Enclosure"
brand: "generac"
price: "฿75189"
currency: THB
in_stock: true
reviews_count: 13
category: "Generac"
url: https://www.desertcart.co.th/products/85431293-100-amp-automatic-generator-transfer-switch-single-phase-service-entrance
store_origin: TH
region: Thailand
---

# 100 Amp seamless power transfer Advanced Digital Power Management for 4 HVAC loads 5-Year Limited Warranty for long-term reliability 100-Amp Automatic Generator Transfer Switch, Single Phase, Service Entrance Rated, NEMA 3R Outdoor Enclosure

**Brand:** generac
**Price:** ฿75189
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your peace of mind — seamless, smart, and built to last!

## Quick Answers

- **What is this?** 100-Amp Automatic Generator Transfer Switch, Single Phase, Service Entrance Rated, NEMA 3R Outdoor Enclosure by generac
- **How much does it cost?** ฿75189 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/85431293-100-amp-automatic-generator-transfer-switch-single-phase-service-entrance)

## Best For

- generac enthusiasts

## Why This Product

- Trusted generac brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First:** UL Listed with built-in service disconnect for easy, safe manual power isolation
- • **Built to Last:** Service entrance rated with rugged NEMA 3R aluminum enclosure for indoor/outdoor use
- • **Smart Load Management:** DPM technology intelligently controls up to 4 HVAC circuits without extra gear
- • **Trusted Brand Assurance:** From Generac, the #1 home standby generator brand, delivering peace of mind
- • **Uninterrupted Power Flow:** Automatic transfer switch ensures zero downtime during outages

## Overview

The Generac RXSW100A3 is a 100 Amp single-phase automatic transfer switch designed for seamless power transitions between utility and generator. Featuring advanced Digital Power Management, it can independently manage up to 4 HVAC loads without additional hardware. Housed in a durable NEMA 3R aluminum enclosure, it’s service entrance rated and UL Listed for safe, reliable indoor or outdoor installation. Backed by a 5-year warranty and trusted Generac quality, this switch ensures your home or business stays powered with intelligent, hassle-free control.

## Description

Generac Automatic Transfer Switches are designed for use with single phase generators that utilize an Evolution or Nexus Controller. This 100 Amp open transition switch is available in single phase with service equipment rated configuration and works in tandem with the generator to monitor the utility power. When utility power is interrupted, the transfer switch automatically transfers power from the utility to the generator. When utility power returns, the transfer switch will return the electrical load from the generator back to utility. Through the use of digital power technology (DPM), these switches have the capability to manage up to 4 individual HVAC (24 VAC controlled) loads with no additional hardware. Generac manufactures the widest range of power products in the marketplace including portable, residential, commercial and industrial generators. At Generac, we protect the things that power your life by providing quality, affordable power solutions. This model replaces model RTSW100A3.

Review: One year in use and. No problems. - Installed almost a year shot and it works perfectly. Highly recommend.
Review: A Clean Look - Great product for allowing distribution from the transfer switch, instead of having to install a sub-panel.

## Features

- Seamless Power Transitions: Keep power on during outages with the Generac RXSW100A3 100 Amp Automatic Transfer Switch. Designed for single-phase generators, it seamlessly shifts power from utility to generator for reliable performance
- Advanced Digital Power Management: Use cutting-edge DPM technology to manage up to 4 HVAC loads without extra hardware. This home generator transfer switch ensures efficient, intelligent power distribution for essential systems
- Long-Term Assurance: Backed by a 5-Year Limited Warranty, this automatic transfer switch delivers lasting performance and peace of mind, ensuring your investment in a Generac transfer switch will serve you well for years
- Reliable Service Disconnect: Features a built-in service disconnect and is UL Listed, offering a device that interrupts excessive voltage and allows for manually disconnecting your home or business from the electrical utility
- Trusted Generac Quality: Rely on the #1 selling home standby generator brand for your power needs. Whether for your home, business, or personal use, Generac provides best-in-class power products, ensuring peace of mind and reliable performance
- Easy Installation: Generac recommends your new transfer switch to be installed by a certified and licensed electrician. Measures 7.1" x 20.0" x 14.6" overall and mounting holes are 17.2" x 12.5"

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B077KPNPQ8 |
| Actuator Type | Rotary |
| Best Sellers Rank | #60,673 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #48 in Outdoor Generator Transfer Switches |
| Brand | Generac |
| Circuit Type | Parallel |
| Color | No Finish |
| Connectivity Protocol | X-10 |
| Connector Type | Screw Terminals |
| Contact Material | Aluminum |
| Contact Type | Electronic |
| Control Method | Touch |
| Current Rating | 100 Amps |
| Date First Available | November 17, 2017 |
| Global Trade Identification Number | 00696471069648 |
| International Protection Rating | IP54 |
| Item Weight | 21.8 pounds |
| Item dimensions L x W x H | 14.6 x 7.09 x 20 inches |
| Item model number | RXSW100A3 |
| Manufacturer | Generac Guardian |
| Number of Items | 1 |
| Operating Voltage | 240 Volts |
| Operation Mode | Automatic,Automatically |
| Product Dimensions | 14.6 x 7.09 x 20 inches |
| Terminal | Physical |
| UPC | 696471069648 |
| Unit Count | 1.0 Count |
| Wattage | 24000 watts |

## Product Details

- **Brand:** Generac
- **Connector Type:** Screw Terminals
- **Contact Type:** Electronic
- **Current Rating:** 100 Amps
- **Item dimensions L x W x H:** 14.6 x 7.09 x 20 inches
- **Material:** Aluminum
- **Operating Voltage:** 240 Volts
- **Operation Mode:** Automatic,Automatically
- **Switch Type:** Automatic
- **Terminal:** Physical

## Images

![100-Amp Automatic Generator Transfer Switch, Single Phase, Service Entrance Rated, NEMA 3R Outdoor Enclosure - Image 1](https://m.media-amazon.com/images/I/71iFQSOz+PL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ One year in use and. No problems.
*by J***Z on August 18, 2025*

Installed almost a year shot and it works perfectly. Highly recommend.

### ⭐⭐⭐⭐⭐ A Clean Look
*by M***T on November 14, 2025*

Great product for allowing distribution from the transfer switch, instead of having to install a sub-panel.

### ⭐⭐⭐⭐⭐ For buyer's safety
*by Y***I on November 11, 2025*

Very good material, good wiring, I recommend it, I loved it

## Frequently Bought Together

- Generac 100 Amp Single Phase Generator Automatic Transfer Switch - Service Entrance Rated - NEMA 3R Outdoor Rated Aluminum Enclosure - Power Management for Indoor and Outdoor Use
- Generac 7000 50 Amp Load Manager - Efficient Load Prioritization and Wire-Free Technology for Reliable Power Management - Lock-Feature and LED Status Display for Convenient Operation - Gray
- Square D by Schneider Electric HOM2175SB Homeline SurgeBreaker, Surge Protection Device, 25kA, 120/240V, 1-Phase, 3-Wire

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-13*