Commercial Building Controls : Commercial Switches and Timers : Switches : Sail Switches for HVAC Controllers : S437 : S437A1025/U
Switch with 1 1/2 in. x 4 in. Sail
Overview
S437 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 preset air velocity.
Features
- Micro Switch SPST snap switch is operated by metal sail inserted in an air stream.
- Sail can trimmed to one-half the original size to double the velocity required to close the snap switch contacts.
- Switch differential can be manually adjusted by turning a knurled knob on the snap switch.
- A conduit knockout is located on each end of the case for wiring convenience.
Product Specifications
- Application
- Sail Switch
- Dimensions (in.)
- 2 15/16 in. high x 3 3/4 in. wide x 2 in. deep; Sail Dimensions --1 1/2 in. x 4 in.
- Dimensions (mm)
- 59 mm high x 95 mm wide x 51 mm deep; Sail Dimensions --38 mm x 102 mm
- Mounting
- N/S
- Approvals, Underwriters Laboratories Inc.
- UL: File: MP2618
- Approvals, CSA
- CSA: Guide: MFHZ
- Insertion Length (in.)
- 3 1/2 in.
- Insertion Length (mm)
- 89 mm
- Ambient Temperature Range (F)
- 150 F Maximum
- Ambient Temperature Range (C)
- 66 C Maximum
- Switching
- 1 SPST
- Programmability
- N/S
- Contact Ratings (AFL)
- 8.0 A @ 120 Vac; 5.1 A @ 240 Vac; 2.0 A @ 24 Vac; 15.0 A @ 6 Vdc; 7.5 A @ 12 Vdc
- Contact Ratings (ALR)
- 48.0 A @ 120 Vac; 30.6 A @ 240 Vac
- Contact Ratings (resistive)
- N/S
- Current Draw
- N/S
- Operating Velocity (fpm)
- 1900 fpm-2250 fpm
- Operating Velocity (m/s)
- 9.7 m/s-11.4 m/s
- Clock Type
- N/S
- Operating Mode
- N/S
- Electrical Ratings, Motor
- N/S
