I want a hard power switch for some battery-powered BLDC motors, but the currents (5A, up to 20A transients) and voltages (up to 60V) limit the kinds of switches I can use.
Because I want some small pretty switches that have the same effect of a hard switch, I've come up with this design with a voltage regulator and solid state relay:
The DPDT switch controls flow to the coil of the SSR as well as the ground of the voltage regulator, resulting in 0 standby current, ideal for my batteries. Because the electrical requirements are less demanding on the coil side of the SSR, I cam less constrained to the switch I use.
Are there any reasons why this design wouldn't work or should be avoided?