Cleveland Controls NS2-0000-00 Air Flow Pressure Switch | Adjustable HVAC Proving Switch

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Part Number: NS2-0000-00

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Description

The Cleveland Controls NS2-0000-00 Air Flow Pressure Sensing Switch is a field-adjustable differential pressure switch designed to prove airflow in HVAC systems.
It is commonly used as a safety interlock to verify that adequate air movement or pressure is present before enabling equipment operation.
This helps protect heating and ventilation equipment from unsafe operating conditions and improves overall system reliability.
The NS2 series utilizes a diaphragm-actuated switching mechanism that responds to changes in air pressure. Its compact housing and proven design make it suitable for both residential and commercial HVAC applications.

Key Features

Field-adjustable setpoint for flexible installation
Reliable airflow proving and pressure monitoring
Diaphragm-operated sensing for consistent switching
Compact, durable enclosure for long service life
Simple installation with standard electrical connections
SPDT switch action for versatile control integration

Technical Specifications

Model	NS2-0000-00
Switch Type	Differential Pressure Switch
Setpoint Range	0.05" to 12.0" WC (field adjustable)
Electrical Rating	15A @ 125/250 VAC, 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC
Switch Action	SPDT (Single Pole Double Throw)
Media	Air or non-combustible, non-corrosive gases
Operating Temperature	-40°F to 180°F (-40°C to 82°C)
Mounting Orientation	Any position (factory calibration typically vertical)
Electrical Connections	1/4" quick connect terminals

Applications

Airflow proving in gas furnaces
Fan and blower status verification
Ventilation and exhaust systems
Boiler and burner interlock systems
Commercial HVAC equipment

Why Use an Air Pressure Switch?

Air pressure switches like the NS2-0000-00 play a critical role in HVAC safety systems.
They ensure that airflow or draft conditions meet required thresholds before allowing ignition or system operation, helping prevent overheating, poor combustion, or equipment failure.

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