Herga - Air Switch, DPDT, 21A, Alternate Latching, ATA211A

Herga (PresAirTrol) center spout Spa Pump Air Switch, DPDT, 21A, 2 HP at 250 VAC, or 1 HP at 125 VAC, ATA211A is an air operated switch used on older hot tubs and spas, to activate two (2) hot tub pumps, or pump and blower. PresAir DPDT switch is double 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). Connects with 1/8"" air hose, sold separately. Hergair PresAir air switch ATA211A mounts with self-tapping screws.