800A Rugged Backup Generator Switch – RTSN800J3

Description

The 800A Rugged Backup Generator Switch – RTSN800J3 is engineered for high-capacity three-phase systems, providing automatic transfer between utility and generator power. Designed for compatibility with Generac’s 22–150 kW liquid-cooled generator line, this switch features an open-transition design for safe load transfer without power overlap.

The RTSN800J3 is built with a durable NEMA 3R steel enclosure, suitable for indoor or outdoor use, and finished with baked powder coat paint for maximum corrosion resistance. Its electrically operated, mechanically held contactor offers fast, positive connections, while silver alloy contacts resist welding and sticking for extended service life. All timing and sensing functions are handled by the generator’s onboard controller, including adjustable start delay, warmup, retransfer, cooldown, and exercise cycles. Manual operation is possible without applied power, ensuring maximum flexibility during maintenance or unexpected conditions.

With a 65,000A withstand rating, 160 ms transfer time, and compatibility across various three-phase voltages (120/240V), the RTSN800J3 is a robust, dependable choice for critical backup power applications.

Key Features

• 800 Amp, three-phase automatic transfer switch

• Compatible with Generac liquid-cooled generators (22–150 kW)

• Voltage: 120/240V, 60Hz

• NEMA 3R outdoor-rated steel enclosure

• Electrically operated, mechanically held double-throw contactor

• Silver alloy main contacts for durability

• 160 ms transfer time

• Adjustable generator start delay (10–30 seconds)

• Manual operation without applied power

• Open transition load transfer design

• 65,000A withstand rating

Specifications Table