Cummins Onan RA Series 100 Amp Automatic Transfer Switch, 120/240V Single Phase
The RA transfer switch monitors utility power 24 hours a day and 7 days a week.  When utility power becomse unsatisfactory or fails, the generator set is signaled to start, then automatically transfers the load.  When stable utility voltage returns, the transfer switch will automatically switch electrical load from the generator to the utility.  No action is required by the home owner.
This product is listed to UL 1008, the Standard for Transfer Switch Safety.  These UL 1008 switches are suitable for standby power systems in residential and light commercial applications.  These RA products adhere to National Electrical Code (NEC) and National Fire Protection Association (NFPA) requirements.
Features:
Long-life high-pressure, silver alloy contact resiste burning and pitting
Solderless screw-type terminals for easier installation of esternal power connections
Solid bus bar connection
Neutral and ground bar, fully rated, bonding jumper on neutral and ground, silver plated copper ground and neutral bus
Especially designed for use with Cummins Power Generation Quiet Connect and Power Connect 22-60kW Power Systems for Homes and Businesses
NON SERVICE ENTRANCE RATED