I have a 12V 40A motor. I have a switch between the motor controller and the battery.
I want to put a pre charge resistor in the path. Like in the figure.
My questions are:
1) The pre charge resistor is connected directly to the battery, so that means the system is connected even the switch is off. How is this condition safe? How is this condition safer than having just the switch? And what should I worry about making this connection?
2) Is there in the market a switch built with this pre charge resistor? If so, what is the name of that switch?
I am thinking that I need some kind of two step switch.
I will follow Whyskeyjack solution, but I have one more question:
Is it OK to have the switch in parallel? Can the precharged switch be rated less power than the other switch?
This is the switch I got for the main path.