Another possibility is that the switch is undersized for its application.
Wall plug switch stuck.
Mend plug socket switch wont turn off having the same problem replaced the socket unit with a new one still remains switched on regardless yet plug in an appliance a drill or whatever no power comes from the socket.
But standard toggle type wall switches generally should feel cool to the touch.
Remove the plug s buy a new socket front with switch.
When you plug something on the outlet which cause it to short circuit a high current will flow.
Probably the contact terminal of the switch had been welded together due to the sudden voltage surge.
You may also want to use a circuit tracer to identify the circuit breaker or fuse you need to turn off.
When a switch stops switching then it s time to troubleshoot and repair or replace the switch.
Determine which particular circuit is protecting that outlet then flip its switch on the main breaker.
Turn off the power and fit new socket front then turn the power back on insert plug and switch on.
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If you feel warmth in a standard switch it s a sign that the electrical flow is not proper which can mean the switch is failing.
If you are not confident get someone who.
You should hear a definitive clicking sound.