Want a switch, the switch time can be adjusted, the time setting is milliseconds. Or a device with this function is also available
You want the main circuit or control loop.
The main circuit such a switch I have not seen, the main loop generally through the controller to control the main contactor for off.
Control loop on a lot, but also depends on what you want is used in the area. The general time relay can be, but other equipment can also be, such as plc, etc., can be achieved.
Directly to buy a programmable controller can meet your requirements.
Recommendation: DC circuit with CMOS, AC circuit with thyristor. Of course there are electronic contactors also have a high response speed.
Millisecond switch, mechanical (relay type) I am afraid it is not working properly, and its contact action time has reached milliseconds
