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

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