• 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.Sail Switch, 1 SPST with Case and Cover| Overview | The 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 predetermined air velocity. |
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| Operating Velocity (fpm) | 1900 fpm-2250 fpm |
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| Operating Velocity (m/s) | 9.7 m/s-11.4 m/s |
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| Insertion Length (in.) | 3 1/2 in. |
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| Insertion Length (mm) | 89 mm |
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| Contact Ratings (AFL) | 7.5 A @ 12 Vdc |
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| Contact Ratings (ALR) | 48.0 A @ 120 Vac |
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| Maximum Ambient Temperature (F) | 150 F |
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| Maximum Ambient Temperature (C) | 66 C |
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| Dimensions (in.) | 2 15/16 in. high x 3 3/4 in. wide x 2 in. deep |
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| Dimensions (mm) | 59 mm high x 95 mm wide x 51 mm deep |
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| Sail Dimensions (in.) | 1 1/2 in. x 4 in. |
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| Sail Dimensions (mm) | 38 mm x 102 mm |
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| Approvals, Underwriters Laboratories Inc | UL: File: MP2618 |
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| Approvals, Canadian Standards Association | CSA: Guide: MFHZ |
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Product Family
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