It's a male end on the PV side, but every of these plug-in inverters I've seen only start outputting when they get the 220V 50Hz input, so they are inert as long as they are not plugged in. As far as I know they always rely on the grid frequency.
If the inverter outputs when the grid has lost frequency then other inverters can respond by also starting to output. This creates a chain reaction and can generate serious currents in sections of the grid that are expected to be on outage, which is a safety hazard.
Grid-tied solar inverters, as a general rule, do not (cannot) output any power at all in the absence of grid power.
The act of plugging in a normal grid-tied solar inverter with a regular ass-plug[0] is just exactly as safe as plugging in any other electrical appliance is.
(There are other concerns, but the physical plug is not amongst them.)
[0]https://www.consumerreports.org/home-garden/generators/why-s...