Originally Posted by mefly2
Minimize the load before switching batteries or battery banks and the switch will last as long as you and I.
I tried to warn you!
Our current boat has three of these rotary switches and they are fine in 8 seasons of sailing but I have been lucky. I have experienced a couple of meltdowns in as many seasons (2) when the switches are never switched under any
load and the loads are not that high in the first place.
I do not trust them....
I have replacements for the boat that I will install this year as I know I am pushing my luck. Makes me wonder if it is truly a design issue as Smead suggests or if it is a quality control issue. I will dissect the switches after I remove them just to see what is there....