I've been searching for a similar circuit and only found latching relays with two momentary switches for on and off. I don't know if this circuit has a specific name or not, and since I am a complete begginer I'm sorry if I missed it somehow. Here's my case.
I have a circuit that runs off a 12V DC power supply with one main switch. I need the circuit to be active when the power supply goes on. Simple enough. What I would need now is a switch that cuts the power to the circuit and keeps it off until the power supply is turned off and on again. So just one switch, no turning the circuit on after it's been pressed.