Timer plug for automatic 30-minute power cut-off after device connection

Hello,
i am looking for a device that automatically cuts off the power at the electrical socket after a certain period of time (from the moment of connection), e.g. after 30 minutes.
It should work like this: I configure the device once to switch off after 30 minutes, I plug in another device I want to use e.g. a hoover and after 30 minutes the hoover stops working. And so on each time it is connected without having to set the time each time.
I would be grateful for any help.

Every appliance has its own switch. What's the point of such an outlet if you can switch the appliance back on by switching it off with a button and then on again (which is equivalent to removing the plug and plugging it in again).

Presumably the author's point is that he doesn't have to remember to switch off a running device.

And as for the solution: use a time relay with a delayed switch-off function. Depending on how much current the consumer is expected to draw, you may need a contactor to be controlled by this relay.

The author of the topic probably wants the timer to start automatically when the receiver is connected to the power supply without manually triggering the timer.
I haven't come across such ready-made timers, but you could probably "quickly" produce something using a current relay or a suitably prepared reed switch as a load "sensor"....

So plugging the device into an outlet is supposed to trigger a countdown timer?

Priority and timer chained together. The priority detects the load and triggers the timer. The latter supports the load that the priority timer no longer sees. When the timer finishes, everything goes back to the beginning.

kortyleski wrote:

First it detects the load and triggers the timer.

How is it supposed to detect the load if there is no voltage?

Gentlemen, thank you very much for all your ideas. The problem is, however, that I am looking for a ready-made solution, because I am completely unfamiliar with electrical engineering and, to be honest, I have not even fully understood the solutions proposed by you. I was hoping that if there were WiFi-controlled sockets, there would be something like that too. The idea is precisely not to have to remember to switch off the device. In fact, it doesn't have to be so much that it detects the voltage after connecting it, because it could be that the person connecting it presses a button indicating that they have switched the device on. The main thing is not to set a time after which the power should be cut off (as is the case with programmers).
If anyone has any ideas, I would be grateful if they could share them with us

If you have a control panel, such as Satel's Integra, this can be done.

A simple timer will do since there can be a button to start the countdown. Except that it's the module itself and you can't do the rest. Maybe you should have someone do it for you, because there is no ready-made solution...

on a well-known auction site you will find a device called "countdown timer" at a cost of about 40.00PLN in a very simple way to set the time from 15 minutes to 4 hours, I personally use it and am very satisfied.
Best regards

This is exactly what I had in mind. Could you also tell me whether this device sets itself every time or whether it has the option of remembering the set time after disconnection from a contact, e.g. via an internal power supply?

unfortunately every time the device has two modes of operation
1- switching off the power after the set time.
2- power on after the selected time .
times available: 15 min , 30 min . 1h , 2h and 4h , I use it to switch off the electric heater in the bathroom. I was looking for a long time for something that met my expectations and I came across this. I am writing about a device for 39,90 PLN.
best regards

There are 230V sockets with pins that short-circuit the NO/NO contact when plugged in, to which you add a time relay and you're done.

Hello, I am looking for an electrical outlet that can start a second appliance at the same time as the first one is started and turn it off together when the first one stops working

Just feed the latter from the former

Yes, I know, but the problem is that the first device is under warranty and I don't want to interfere with it while it is still under warranty

Added after 11 [minutes]:

Namely, it is so I have a grinder which is connected to the hoover and when I start it at the same time starts the hoover and the matter is that I have 2 other industrial hoovers without this function can they be adapted for such a way of operation grinder I do not touch because it is under warranty

As previously proposed: a supervisory relay
where the power supply to the first socket - via the measuring path of the relay; and the power supply to the second socket via its contacts.

Is a ready-made solution something like this
https://www.speckable.pl/pl/product/25013,f-f...eneo_cid=1f82c5b6-bd13-b0c0-d55c-63ba9387a8be

The aforementioned - is a simple inlet relay....
If you want to attach a second socket to the hoover (if the first one will "draw current" from the grinder) - you need to use a current or priority relay as a logic component:
https://www.fif.com.pl/pl/przekazniki-pradowe/324-przekaznik-pradowy-epp-619.html
https://www.fif.com.pl/pl/przekazniki-priorytetowe/200-przekaznik-priorytetowy-pr-613.html
Of course, it's all about the principle of operation - look at the wiring diagrams and allowable contact loads.