Hre in Austria 400V (or 380 as everyone says, sorry if I get this mixed up) is used for every bigger appliance. Most common example are electric ranges, but you can find larger woodworking tools, washing machines, garden appliances, concrete/plaster mixers (pretty common for DIY use), air compressors, pressure washers, ceramic heaters,...
Almost evrything is available in a 380V version, and everyone who lives in a single-family building has several 3ph outlets installed around the house.
220 and 380V wiring MUST not be in the same conduit and junction boxes after leaving the panel. As a result of this it's also illegal to tap off a single ph run from a 3ph one. So the Schuko receptacles C-H mentioned would be a violation.
Almost everything (choc blocks, voltage testers, electric tape, fuses,...) is rated 500V.
