Decent power supplies should provide inrush and overvoltage protection. The DPS-2000BB would tolerate spikes reasonably well.
Depending on the money you are willing to put into this, you could use DIN rail surge protectors, for example Phoenix Contact has a detailed catalog.
https://www.phoenixcontact.com/assets/downloads_ed/global/web_dwl_promotion/52005654-01_EN_DE_LR.pdfYou can easily get up 50kva protectors that are designed for your entire house and three phases.
If you are into jury rigging somewhat dangerous and potential fire hazards you can play around with NTC thermistors and splice them into the voltage regulator you posted.