In a project of mine I want to switch 12V loads on and off.  The loads
are various and typically consume 1A @ 12V (3A max), and contain
electromechanical components such as motors, steppers, etc.

In the prototype I use a Relais to connect/disconnect those to the 12V
supply. For space and endurance reasons I'd prefer to have them
electronically connected.

Note that the loads are external, and they are connected to my device
by an operator.  I plan to activate the 12V supply only when everything
is connected, but you never know if somebody is pulling the plug
during operation.   My device must withstand all occasions without
failure.

Do you think that power MOSFETs are the right way to go? Or will they
soon become a victim of ESD, inductive kickback, and similar issues? What
circuit arrangement do you recommend?