Siemens QPD15.003 Differential Pressure Switch model_skp25_012u1 21A1 110v Flame Safeguard

21A1 110v Flame Safeguard

3-pos output

IP54 / IP44

Switching function

recycling and post-purge after a loss of flame

Siemens QPD15.003 Differential Pressure Switch model_skp25_012u1 21A1 110v Flame SafeguardThe QPD differential pressure switches are used for monitoring air pressures and air flows. When the pressure falls below or exceeds the adjusted switching point, the respective electrical circuit will be opened or changes over. Specifiactions: For the supervision of air pressures or air flows of oil or gas fired equipment (burners, boilers, furnaces) QPD15 are suitable as absolute or differential pressure Adjustable working pressure ranges up to 5