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Controls and Safety : Pressure Switches
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Type ZA
Type ZA
Type ZA
Low voltage circuit adjustable positive pressure switch. Quick connect terminals. Various center threads. Maximum set point value: 4 bar (0.4 Mpa, 60PSI) Minimum set point value: 10 kPa (100 mbar, 1.5 PSI) Maximum electrical rating: 1A 250VAC
Controls and Safety
Pressure Switches
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Product applicable fields
  • Air and Fluid heating solutions
  • Renewable energy
  • Industry
  • Ventilation
  • Agriculture and Farming
  • Petrochemistry
product presentation

Main applications :
Minimum water pressure detection on water heaters and boilers. This pressure switch is much more sensitive than snap-action systems and can be calibrated at lower pressures, but its use is limited to low power applications, typically on electronic circuits. Very low differential, less than 1 kPa (10 millibars, 0.15 PSI).

Membranes: Silicone, dia. 22mm.

Fluid: Water or air

Fitting: PA66

Housing: PA66, UL94 VO

Contact: Single pole normally open, slow make and break.

Electrical rating:
- Silver contact: max 1A 250VAC
- Gold plated contact: max 100mA, 24VDC
Action: Momentary, close on pressure rise.

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

Set point calibration limits: From 0.1 to 4 bar (0.01 to 0.4 Mpa, 1.5 to 60 PSI)

Electrical connection: 6.35 × 0.8mm quick connect terminals

Bursting pressure: > 16 bar (1.6Mpa, 232PSI)

Ambient temperature limits: water: 0 to 85°C (32 to 185°F ), Air: -10 ~ 85°C (14° to 185°F).

Maximum calibration value: 4 bar (0.4 Mpa, 60 PSI).