Overview The Sail Switch activates an electronic air cleaner a humidifier or other equipment in response to airflow from the system fan. The S688A is mounted in the return air duct where the sail will be in the direct path of an unrestricted air stream. Features Simplified installations with multi-speed fans in- accessible air handlers fan motors with voltage or phase different from controlled equipment eliminated wiring to system fan. Polyester film sail mounted on a micro switch snap switch. Removable spring counterbalances sail to allow mounting in either vertical (up or down) or horizontal air flow. Top and bottom conduit knockouts for wiring convenience. Low air velocity switch operation makes at 250 fpm and breaks at 75 fpm. Product Specifications ApplicationAir Flow SwitchDimensions (in.)2 15/16 in. high x 3 3/4 in. wide x 2 in. deep Sail Dimensions --5 in. wide (max) 26.2 sq. in. of areaDimensions (mm)59 mm high x 95 mm wide x 51 mm deep Sail Dimensions --127 mm wide (max) 16 903 mm2MountingN/SApprovals Underwriters Laboratories Inc.UL Listed: File No. E4436 Guide No. XAPX. For use in ambient temperatures normally prevailing in occupiable spaces which usually are not higher than 77 F (25 C) but occasionally may be as high as 104 F (40 C) for brief periods.Approvals Canadian Standards AssociationCertifiedInsertion Length (in.)10 in.Insertion Length (mm)254 mmAmbient Temperature Range (F)At switches: 125 F Maximum At sail: 170 F MaximumAmbient Temperature Range (C)At switches: 52C Maximum At sail: 77 C MaximumSwitchingSPDTProgrammabilityN/SContact Ratings (AFL)N.O.Contacts: 2.0 A @ 24 Vac 120 Vac N.O.Contacts: 1.0 A @ 240 Vac N.C.Contacts: 1.0 A @ 24 Vac 120 Vac N.C.Contacts: 0.5 A @ 240 VacContact Ratings (ALR)N.O.Contacts: 12.0 A @ 24 Vac 120 Vac N.O.Contacts: 6.0 A @ 240 Vac N.C.Contacts: 6.0 A @ 24 Vac 120 Vac N.C.Contacts: 3.0 A @ 240 VacContact Ratings (resistive)N.O.Contacts: 5.0 A @ 24 Vac 120 Vac N.O.Contacts: 2.5 A @ 240 Vac N.C.Contacts: 2.5 A @ 24 Vac 120 Vac 240 VacCurrent DrawN/SOperating Velocity (fpm)75 fpm-250 fpmOperating Velocity (m/s)0.4 m/s-22.9 m/sClock TypeN/SOperating ModeN/SElectrical Ratings MotorN/S
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