This circuit can be put in any power supply. To see it trip turn up voltage source. Push button to short out. Make sure short has been fixed before reset. This will also protect from reverse poll battery. Also note a fuse or circuit breaker should be fitted to all power supplies. I combined two of my circuits. This one http://everycircuit.com/circuit/5545497699024896 and this circuit. http://everycircuit.com/circuit/5463064296816640 to create this .