Re: bilge pump
The norm for a bilge pump switch is 3-way; left position is auto (for use with a float switch/sensor), center position is all off, right position is manual on. Note; the auto position is maintained
the switch stays flipped to the left, but the manual positions is momentary
spring loaded and flips back to the center off position when you let go of it. That said, people install the switches in whatever orientation up/down, etc.