Choosing an automatic backup transfer switch for your Generac RXSW200A3 comes down to more than just matching the part number. You have to decide whether you need load management for multiple HVAC units, whether your generator controller requires specific compatibility, and how much you want to spend. Four compatible 200-amp switches are on the table, with listed prices spanning $339 to $390. The right unit depends on your generator setup and whether you prioritize a direct replacement price or advanced power-management features.
Quick Take
Four compatible 200-amp automatic transfer switches for the Generac RXSW200A3 are listed at prices from $339 to $390. The group includes a direct replacement unit, two units with a shared feature set, and one unit that differs in its listed compatibility. Each switch is new, and all are designed for automatic backup power transfer, but the feature details vary.
At a Glance
Here's how the four options compare by listed price:
| Product | Listed Price | Price Bar |
|---|---|---|
| Single Phase Generator ATS for Generac RXSW200A3 200A | $339.00 | |
| 200A ATS w/ Power Management (ANNX) | $375.50 | |
| 200A ATS w/ Power Management (RASTP) | $375.50 | |
| 200A ATS w/ Power Management (Evolution/Nexus) | $390.00 |
Decision Matrix
This matrix gives a quick read on where each unit fits.
| Option | Best for | Watch out for |
|---|---|---|
| Single Phase Version | Budget-focused, direct replacement | Simpler feature set |
| ANNX Version | Standard ATS use | Listed details mirror the RASTP unit |
| RASTP Version | Standard ATS use | Listed details mirror the ANNX unit |
| Compatibility-Listed Version | Matching a specific generator requirement | Highest listed price |
Product Notes
200 Amp Automatic Transfer Switch w/Power Management for Generac RXSW200A3 (ANNX)
This ANNX version is a strong candidate if you want whole-home coverage and prefer not to add separate load-management hardware. The description highlights DPM technology that manages up to four HVAC loads without extra equipment, and the aluminum enclosure supports indoor or outdoor installation. The one limitation is that the listed attributes do not mention Evolution/Nexus controller compatibility, so if your generator relies on one of those controllers, this may not be the best fit.
200 Amp Automatic Transfer Switch w/Power Management for Generac RXSW200A3 (Evolution/Nexus)
The standout feature here is explicit compatibility with Evolution/Nexus controllers, something the other power-management switches do not list. That makes it a sensible choice if your generator uses those controller types. It also includes DPM power management for up to four HVAC loads. The limitation is that outside of the controller compatibility, the listed features largely mirror the other power-management switches, so the additional cost buys you that compatibility specifically.
200A 200 Amp Automatic Transfer Switch w/ Power Management For Generac RXSW200A3 (RASTP)
If you like the DPM power-management concept but want another option beyond the ANNX switch, this RASTP-marked unit lists the same core details: aluminum construction, new condition, and support for up to four HVAC loads. The main limitation is that the visible attributes don't reveal any functional difference from the ANNX version, so the decision between them may come down to brand or personal preference.
Single Phase Generator Automatic Transfer Switch For Generac RXSW200A3 200 Amp
This is the only single-phase direct-replacement switch in the group. It is described as a direct replacement with the RXSW200A3 interchange number, and it includes a 2-year warranty. It also lists 120/240-volt operation, so it is a straightforward fit for an 8-24 kW home standby generator. The limitation is that it does not mention DPM power management, so if you need to manage multiple HVAC loads through the transfer switch, one of the power-management units would serve you better.
Final Recommendation
- For a straightforward direct replacement with a warranty, choose the Single Phase Generator Automatic Transfer Switch.
- For standard automatic transfer in a home backup setup, pick the ANNX or RASTP version based on brand preference.
- The Compatibility-Listed Version rounds out the group for buyers who need an extra compatibility layer in their switch.
