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RDT vs. RXT Transfer Switches

You've decided a KOHLER generator is the right generator for you, and now it's time to pick the most important feature of your new generator - the automatic transfer switch. An automatic transfer switch senses when your home has lost it's power source, tells the generator to begin running and then automatically switches your power feed from your standard power source to your KOHLER generator. KOHLER offers two model lines of automatic transfer switches, the RDT and the RXT. The tabel below shows a side by side comparison to help you decide which model is the best product for your home.

Model RDT to RXT Comparison
Feature Model RDT Model RXT
Compatible with Atlas (14/20RESA with RDC2 or DC2 controller) Yes Yes
Compatible with other KOHLER generator set models and controllers Yes No
ATS-mounted controller user interface Yes Optional
Position indicating LEDs Yes Optional
Source available indicating LEDs Yes Optional
Weekly exercise with diagnostics Yes Yes*
Load control time delay Yes Yes
Common/fault relay Optional No
Engine cool-down cycle Yes Yes*
Programmable exerciser available Yes Yes*
Accessory board with audible alarm, input and output connections, 2-week exercise option, and 10-minute load control delay option Yes No
External alarm module available for remote status indication and remote generator set start/stop Yes No
3-phase, 3 and 4 pole models available No Yes
Enclosure Type NEMA 1 (Steel) & NEMA 3R (Al) NEMA 3R (Aluminum)
Load centers available Yes Only on 100-Amp Standard
Service Entrance Model available 200A or 400A 100A, 200A & 400A

*Control of this function set using genset controller

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