Type: ZA, slow action contact miniature pressure switches, 6.3 x 0.8mm QC terminals, plastic fitting, SPNO contact


Uses: Low voltage, high sensivity.

Main applications: Electronic circuits. Pressure sensing on water heaters. This pressure switch is more sensible than snap action models and can be calibrated at lower pressure values. Very small differential.

Membranes: EPDM, dia 22 mm. Silicone or NBR on request.

Fluid: water or air.

Fitting: Plastic.

Pressure: positive.

Housing: PA66, UL94 VO.

Contact: single pole normally open, slow make.

Electrical rating:

– Silver contact: max 1A 250V

– Gold plated contact: max 100 mA, 24V.

Action: momentary, close on pressure rise.

Set point calibration: factory calibrated and sealed, not field adjustable

Set point calibration limits: standard calibration 150mbar, other values are achievable from 100 to 1300mbar.

Electrical connection: 6.35 x 0.8 mm quick connect terminals.

Maximum pressure: 2 bars (29 PSI).

Ambient temperature limits: 0 to 85°C.


Available pressure inlet fittings

References (with calibration at 50 mbar):

Pressure inlet

Silver contact Gold plated contact
1/8’’ NPT ZA2X28EA0A500000



ZA2X2QEA0A500000 ZA2X2QEG0A500000
M10 x 1 ZA2X2MEA0A500000


Snap in fitting, 2 grooves dia 7.8

ZA2X2TEA0A500000 ZA2X2TEG0A500000
Snap in fitting, 1 groove dia 10 ZA2X2ZEA0A500000


Snap in fitting, 1 spout dia 6mm



Other set point values: replace A50 in the product reference by the requested value in mbar.


2D&3D Drawing