Yes this is a safety feature found on some cars that is an inertia switch. Power is cut to the fuel pump whenever the car is in an accident. You push the switch to reset it and restore power to the pump.
There is also a fuel pump relay, that is sometimes called a switch, although it is not actually a switch. This relay closes and turns the fuel pump on when the ignition is turned on. It will stop the pump if the engine is not started.
We replaced the high pressure fuel pump that time, and the next time, when it died in a parking lot, we replaced the filter. The next time, as I was pulling into a parking space 20 miles from home, it did the same thing. As I sat waiting for my wife to come get me, I heard a "click" that I couldn't place.
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