Air Switch, ARA 111A SPDT, Latching 21a
Herga (PresAirTrol) Side Spout Spa Pump Air Switch, SPDT, 21A, 2 HP at 250 VAC, 1 HP at 125 VAC, ARA111A is an air operated switch used on older hot tubs and spas, to activate hot tub pumps. PresAirTrol SPDT switch is single pole, double throw, with a micro switch and a dummy switch. Latching switch holds the on/off position until air button is pushed again. 3 wire terminal connections on this general hot tub air switch - common (always used), NO normally open (usually used) and NC normally closed (not normally used). Made by PresAir, this air switch replaces and supersedes 6861-AOO-U106. Connects with 1/8" air hose, sold separately, which attaches on the side - also available in center mount. Hergair PresAir air switch ARA111A mounts with self-tapping screws.