Did the 500A-switch drain the battery?

[Kruegerruda]

I forgot the 500A switch after using the nato-plug. 3 days later the battery shows 0%. Drain the switch the starter battery, even with ignition off?

 

[pmatusov]

I forgot the 500A switch after using the nato-plug. 3 days later the battery shows 0%. Drain the switch the starter battery, even with ignition off?

Most likely not the switch but the relay coil connected to it.

 

[Stealthn]

I noticed a draw on my with the switch left on as well.

 

[Tenac]

Does the 500A operate without the PWR switch as well? Or do we think all the switches are like that with draw?