Pressure Switch (PSI) – 110 a 135 pounds
SKU: H13940S
Pressure Switch (PSI) – 110 a 135 pounds
The Hadley H13940S Air Horn Compressor Pressure Switch is a control device designed to turn an air compressor ON and OFF automatically based on the air pressure in the tank.
As a compressor pressure switch, its standard electrical configuration is Normally Closed (NC) when the air pressure is low (or zero).
Here's how it works:
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Low Pressure (e.g., below 110 PSI): The switch is CLOSED, completing the electrical circuit, and the air compressor runs to build up pressure.
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High Pressure (e.g., above 135 PSI): The switch is OPEN, breaking the circuit, and the air compressor shuts off.
In summary: It is Normally Closed (NC) and opens when the high-pressure set point (cut-out) is reached.
The pressure range for the H13940S is typically:
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Cut-In Pressure: $\approx 110$ PSI (Switch CLOSES to turn the compressor ON)
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Cut-Out Pressure: $\approx 135$ PSI (Switch OPENS to turn the compressor OFF)
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