Residential Standby Automatic Transfer Switches
Cummins Onan automatic transfer switches combine reliability and flexibility in a small, economical package for transferring loads between the utility and generator set.
The RSS Automatic Transfer Switches work together with the Cummins Onan Residential Standby series generators. These controls monitor utility and emergency standby generator set power. When utility power fails or is unsatisfactory, the control starts the generator set and transfers the load to the generator set. The transfer panel immediately senses when utility power is restored. It automatically switches back to utility power, shutting down the generator and instantly resetting itself for the next power interruption. No action is required by the homeowner.
RSS Automatic Transfer Switch - Models 100-6868 and 200-6869

These switches are Service Entrance Rated and are integrated to be used with the RS12000 only in the US. The switch and the RS12000 combination is specifically designed for a simplified and quicker installation.
Standard Features
- 100 or 200 AMP
- NEMA 3R Enclosure - all climate indoor/outdoor
- Mechanically interlocked contactor
- Solid bus bar connection
- Integrated, automatic 2 amp regulated battery charger
- UL 1008 listed
RSS Automatic Transfer Switch - Models 100-6634 and 200-6635
These switches, which are not service entrance rated, are suitable for standby power systems in residential and light commercial applications and are built to satisfy the requirements for back-up power. They are designed for use with any properly sized genset in US and Canada.
Standard Features
- 100 or 200 AMP
- NEMA 3R Enclosure - all climate indoor/outdoor
- Mechanically interlocked contactor
- Fully automatic control
- Integrated, automatic 2 amp regulated battery charger
- UL 1008 listed and CSA approved
A homeowner should not attempt to install a power system on their own. In all cases, they should contract a Cummins Onan Dealer and/or certified technicians. Our sales and service locator will direct you to your nearest qualified Cummins Onan dealer or distributorship.
The Spec Sheet documents are in PDF
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