Device for switching/metering 2-phase 480V devices (e.g water heater)

Hello, HA newbie here!

Can anyone recommend a HA-compatible device for monitoring a 2-phase (i.e. 480V) device, like my water immersion heater? Preferably Zigbee, or something purely local, but if I have to use a wi-fi + cloud it’s better than nothing.

For those that are interested, I ended up having to build a physical actuator to turn the switch. Another person I know installed a new fuseboard with circuit breakers that could be switched by receiving an electric signal, then used a standard zigbee switch to control that signal. Not easy!