What you need is a device with controlled current. It's called, "constant current", but the current isn't constant, it just has a limit. It's like, you can't get more than 12 volts out of a car battery, no matter how you try. With a constant current supply, you can't get more than the amps you told it to stop at. Pages 8 and 10 of the attachment give basic drawings of how to use this chip for constant current limiting. Are you up to building a circuit that attaches to the voltage supply and protects it, constantly, no matter what you do to mess up?