i Register
In some senses, switcher is marked as US. Watch for register when choosing this word.
noun
One who or that which operates a switch.
They all love frugality and conservation; they are manic savers of bits of string and switchers-off of lights.
One who or that which switches, that is, changes in some way.
career switcher
Switch to Acme brand razors for a closer shave! For a limited time, we'll pay you to be a switcher!
A switchmode power supply.
A railway locomotive used for shunting (switching).
The yardman who operates such an engine, or performs a similar role in a trucking depot.