Snap action contact miniature pressure switches, SPDT contact
Uses: High electrical rating, for 250V .
Main applications: Pressure sensing on water heaters, boilers, and electrical appliances.
Housing raw material | |
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Fitting raw material | |
Electrical rating | |
Voltage | |
Contact Material | |
Fluid | |
Max operating temperature (°C) | |
Min operating temperature (°C) | |
Maximum pressure | |
Set point calibration (mbar) |
Uses: High electrical rating, for 250V .
Main applications: Pressure sensing on water heaters, boilers, and electrical appliances.
Membranes: EPDM, dia 22 mm. Silicone or NBR on request, Double membrane on request.
Fluid: water or air
Fitting: Plastic or metal
Pressure: positive
Housing: PA66, UL94 VO
Contact: SPDT, snap action. NO or NC contacts available with MOQ
Electrical rating: Depends on microswitch operating force that is linked to the electrical rating
- Standard rating micro-switch (medium and high pressure calibration only): 16A 125/250VAC;1/2HP 125VAC;3/4HP 250VAC
- High rating micro-switch (medium and high pressure calibration only): 2HP 240V, 21(8) A 240V (UL, CSA VDE switch)
- Low force micro-switch (set points less than 150 mbar): 1/4HP 6(1) A 240V ( UL, CSA VDE switch)
- On request: up to 25A 250V
Action: momentary.
Set point calibration: factory calibrated and sealed, not field adjustable
Set point calibration limits: from 50 to 1500 mbar
Electrical connection: 6.35 x 0.8 mm quick connect terminals
Maximum pressure: 4 bars (58 PSI)
Ambient temperature limits: 0 to 85°C
Dimensions
Available pressure inlet fittings (1)
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* | * | * |
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* only available for metal fitting
** only available for plastic fitting |
References (with 1/8″ NPT fitting)
Fitting material | Standard rating micro-switch (calibration: 800mbar) | Low force micro-switch (calibration: 150mbar) | High rating micro-switch (calibration 800mbar) |
Plastic | ZQ2K28U1UH000000 | ZQ2728U50A500000 | ZQ2K28U6UH000000 |
Metal | ZQ2K2RU1UH000000 | ZQ272RU50A500000 | ZQ2K2RU6UH000000 |
Contact us for other calibration or pressure inlet
Technical specifications sheet
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Technical informations associated to this product
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Differences between air switches and pressure switches
Pressure switches are used to control the pressure of a medium and operate an electrical device. When pressure rises to the set point value, they switch off the equipment or switch on an alarm. Fluid they control can be air or water. There is no barometric or ambient temperature compensation in pressure switches. -
Important parameters to select a pressure switch
Accuracy, actuating force and differential are given by membrane surface. -
Technical foreword of elastomeric membrane pressure switches
The pressure switches of this catalogue are made according to the flexible elastomeric membrane technology. The pressure applied deforms the membrane which then actuates an electrical contact.