Momentary Contura Rocker Switch - (ON)-OFF-(ON) Switches are rated for 20 amps at 12 VDC.
Rockers require 27/32" x 1-29/64" cutout. Momentary spring loaded "On" position. Current will flow only as long as switch is depressed. Release the switch, and the current stops. Momentary position is indicated by (). #19430 Two Position Switch (On)-Off-(On) single pole switch.