Generac RTSC800A3 800A 1ph-120/240V Nema 3R Automatic Transfer Switch

Generac RTSC800A3 800A 1ph-120/240V Nema 3R Automatic Transfer Switch Features:

Generac RTSC800A3 800A Automatic Transfer Switch Features:

The Generac RTSC800A3 offers high-capacity backup power switching for large residential or small commercial properties. Built for single-phase 120/240V systems, it handles up to 800 amps—allowing full-panel electrical loads to transfer seamlessly during a utility outage. Though non-service entrance rated, it includes embedded features that make it a powerful, high-performance choice for demanding setups.

One of the standout benefits is its integrated Intelligent Load Management, which includes a Smart A/C Module (SACM) capable of managing up to four individual HVAC loads without extra hardware. This means the switch can help optimize generator sizing and manage startup loads, avoiding overloads and improving efficiency. If additional load control is needed, there is support for external Smart Management Modules to manage even more loads.

Durability is built in. The RTSC800A3 is housed in a NEMA 3R rated steel enclosure meant for outdoor or sheltered indoor installation—protecting internal components from rain, snow, and debris. Heavy-duty Generac contactors ensure reliable open-transition switching, separating utility and generator power cleanly during transfer. Timing, sensing, and control functions are handled by the generator’s controller so the switch itself remains largely hands-off once installed.

To give you peace of mind, this switch is backed by a 5-year limited warranty, supporting its long service life. With its rugged build, high amp rating, and smart load management, the RTSC800A3 is a great fit where large electrical capacity and reliable backup are non-negotiable.

Key Features

• 800 Amp automatic transfer switch (single-phase, 120/240V)

• Non-service entrance rated (cannot be used as the main disconnect)

• Integrated Smart A/C Module for managing up to 4 HVAC loads without extra hardware

• Supports further expansion via Smart Management Modules for more load control

• Open-transition switching for safe separation between utility and generator sources during transfer

• NEMA 3R steel enclosure designed for outdoor or sheltered indoor placement, weather-resistant finish

• Heavy-duty Generac contactor with silver or silver-alloy main contacts for durability

• Withstand rating of ~65,000 amps

• Large conductor lug range (4/0 up to 500 MCM) to accommodate high current service wiring

• Adjustable timing and sensing features (factory delays for generator start, voltage dropout/pickup, retransfer delay, and cooldown)

• Exercise modes to maintain readiness (periodic system check)

• 5-year limited warranty

RTSC800A3 Specifications Sheet
RTSC800A3 Owner's Manual
RTSC800A3 Warranty