Honeywell S637A1004 Sail Switch with 1" x 3" Sail

The S637 Sail Switches respond to the air velocity in heating or warm air ducts, such as used in farm crop dryers. The switch completes a 24V or line voltage burner control circuit only when the blower or fan has produced a predetermined air velocity.

Features:

• Micro Switch SPDT snap switch is operated by metal sail inserted in an air stream
• A conduit knockout is located on each end of the case for wiring convenience
• Sail can be trimmed to one-half the original size to double the velocity required to close the snap switch contact
• Switch differential can be manually adjusted by turning a knurled knob on the snap switch
• 3-1/2" insertion length
• 150 deg F maximum ambient temperature range
• Contact Ratings: 48.0 A @ 120Vac; 5.1 A @ 240 Vac; 2.0 A @ 24 Vac; 15.0 A @ 6 Vdc; 7.5 A @ 12Vdc
• 2-15/16" high x 3-3/4" wide x 2" deep