Generac RXSC100A3 100A 1ph-120/240V Nema 3R Automatic Transfer Switch

SKU: RXSC100A3
(5 reviews) Write a Review
Availability:
In Stock - Ships Next Business Day
$439.00

Generac RXSC100A3 100A 1ph-120/240V Nema 3R Automatic Transfer Switch Features:

Generac RXSC100A3 100A Automatic Transfer Switch Features:

The Generac RXSC100A3 is a 100-Amp open-transition transfer switch designed for single-phase 120/240V generator systems. It’s the non-service entrance option in Generac’s RXS/RXSC line, built to work with Evolution™ or Nexus™ controllers. This ensures your home’s power will seamlessly switch from utility to generator during outages and back when utility power returns—without manual intervention.

This model is engineered for smarter power management. With its integrated Smart A/C Module (SACM), the RXSC100A3 can manage up to four HVAC loads (24 VAC controlled) with no additional hardware. For homes with more loads, optional external Smart Management Modules (SMMs) allow further expansion, giving you flexibility in how your generator handles peak demands.

Durability and protection are part of the design. The switch comes in a NEMA 3R enclosure, made from steel, capable of being installed outdoors (or indoors under shelter). It features a heavy-duty contactor, rugged internal components, and is backed by a 5-year limited warranty for peace of mind.

Key Features:

  • 100 Amp automatic transfer switch, 120/240V single-phase

  • Non-service entrance rated—cannot serve as the main electrical disconnect

  • Open-transition switching for safe, clean source connections

  • Built-in load management: controls up to 4 HVAC (24 VAC) loads without extra hardware

  • Expandable with external Smart Management Modules for more load control

  • Housed in a steel NEMA 3R enclosure suitable for outdoor or sheltered indoor installation

  • Heavy-duty contactor and components for durability

  • Compatible with Generac Evolution™ / Nexus™ controllers for timing, sensing, and transfer logic

  • 5-year limited warranty

 

TECHNICAL SPECS & DOWNLOADS
  • 5
    Very good...

    Posted by Chase Smith on Jul 20, 2024

    Very good service

  • 5
    RXSC100A3

    Posted by Partridge Electrical on Mar 11, 2022

    Thank you for the prompt shipment of all equipment

  • 5
    Transfer switch

    Posted by Unknown on Nov 15, 2019

    Unit was just installed today; tested and run and seems to work just fine.

  • 5
    GENERAC RXSC100A3 100A 1Ø-120/240V NEMA 3R AUTOMATIC TRANSFER SWITCH

    Posted by Daniel Flanders on Feb 20, 2018

    I shopped around for the best price on these transfer switches and went with AP Electric. They have a great price with no sales tax. I am happy with this purchase and the shipping was fast.

  • 5
    GENERAC RXSC100A3 100A 1Ø-120/240V NEMA 3R AUTOMATIC TRANSFER SWITCH

    Posted by Roger Haskins on Feb 20, 2018

    I wasn't sure which switch I needed. The folks at AP Electric helped me figure out which transfer switch would work best with my generator. They were friendly and knew their stuff.