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JDW-3

Differential pressure switch, 20…330 Pa, internal setting

Differential pressure switch for monitoring overpressure, differential pressure or negative pressure of air and non-flammable, non-aggressive gases. Can be used as a fume cupboard or fan monitor or flow monitor to protect electrical heating registers, as a filter monitor, low air pressure protection or limit value controller. Note: Once the differential pressure switch has switched a voltage > 24 V and a current > 0.1 A, the gold coating on the contacts is burnt off. After this, the differential pressure switch can only be operated with this or a higher power. Note: The JZ-06/1 hose set is not included in the scope of delivery and must be ordered separately.

Supplied without mounting bracket, can be screwed on directly (with 2 screws).


Number of outputs2, 2
Number of control ranges1
Output signalswitching
External settingNo
Operationinternal setpoint adjuster
Pressure connection6.2 mm
Electric connectionscrew terminals
Electronic versionNo
With explosion protectionNo
Colourblack
Sensor elementpressure membrane
Function type (systems engineering)monitor
Internal settingYes
Bearing temperature–15 … 80 °C
Max. air humidity (non-condensing)95 % r.H.
Housing materialplastic
Max. Pressure5000 Pa
Max. switching voltage230 VAC, 50 Hz / 24 VDC
Max. switching current1,5 (0,4) A (230 VAC), (1)  (24 VAC), 0,2 A (30 VDC)
MediumAir
Medium temperature−15 … 80 °C
Min. switching voltage12 VAC, 50 Hz / 12 VDC
Min. switching current1 mA
Mounting/attachmentwall mounting
Surface finishmatt, matt
Pressure control range20 … 330 Pa
Control function, overpressure or underpressureYes
Switching differential20 … 8 Pa
Switching elementmicroswitch
Switching contacttwo-way contact
Potential free switching contactYes
Protection class
Protection classII, following appropriate mounting
Safety and EMCin accordance with DIN EN 60730
Ambient temperature−15 … 80 °C
Degree of contamination2

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