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Pressure switch GW A4 Dungs for gas, air, flue gases, combustion products

Pressure switch GW A4 Dungs
  • These pressure switches GW 500 A4 are designed for monitoring in burner control systems. Suitable for closing, opening or switching over a current circuit when the actual pressure value deviates from the specified pressure setpoint.
  • The specified pressure setpoint (operating point) is set at a setting wheel using a scale.
  • Pressure switch as per EN 1854 for burners.
  • Maximum operating pressure: 600 mbar, setting ranges between 100÷500 mbar. Ambient and medium temperature -15÷70oC, storage temperature -30÷80oC.
  • Switching voltage: DC gold contacts 5÷24 V, silver contacts 24÷48 V; AC 24÷250 V. Nominal current: DC 20 mA - Au; (AC 10 A - Ag).
  • The GW … A4 version has a degree of protection IP 54 and a clear cover; the GW … A4/2 version is IP 65 and has a metal housing.
  • The installation position can change significantly the switching pressure.
  • Suitable for gases of families 1, 2, 3 and other neutral gaseous media, as well as air, flue gases and combustion products. Free of non-ferrous metals, suitable for gases up to max. 0.1% by volume H2S, dry.


Function GW A4:

Pressure switch for applications involving excess pressure. GW 500 A4 acts via a rubber diaphragm against the force of the setting spring on the micro-switch. The switching mechanism reacts to overpressure and closes, opens or switches over a current circuit when the specified pressure setpoint is overshot or undershot.


Technical specifications GW A4 pressure switches

Pressure switch type Code Setting range (mbar) pmax (mbar) Degree of protection Δpmax (mbar) Medium p(+) Electrical connection
Pressure switch GW 500 A4 157060 100 ÷ 500 600 IP 54 ≤15 gas
air
Terminal
Pressure switch GW 500 A4 221201 Terminal
Pressure switch GW 500 A4 218270 Plug
Pressure switch GW 500 A4/2 237804 IP 65 Terminal
Pressure switch GW 500 A4/2 238572 Plug
Air also means flue and exhaust gas.


Dimensions GW A4 (mm)

Pressure switches for gas and air GW A4:
dimensions GW A4-1 dimensions GW A4-2 dimensions GW A4-3
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Pressure switches for gas and air GW A4/2:
dimensions GW A4/2-1 dimensions GW A4/2-2 dimensions GW A4/2-3


Legenda denumire presostate GW A4

Legend Pressure switch GW A4 Schematic Pressure switch GW A4


Prices for pressure switches GW A4

Code Type Prices without VAT
157060 Pressure switch GW 500 A4 Ag-M-MS9-V0 st-se 0.00
221201 Pressure switch GW 500 A4 Ag-M-MS9-V0-VS3 st-se 0.00
218270 Pressure switch GW 500 A4 Ag-G3-MS9-V0 st-se 0.00
237804 Pressure switch GW 500 A4/2 Ag-M-MS9-V0-VS3 0.00
238572 Pressure switch GW 500 A4/2 Ag-G3-MS9-V0-VS3 0.00
172680 Pressure switch GW 3 A4 Ag-M-MS9-V0 st-se 0.00
172690 Pressure switch GW 10 A4 Ag-M-MS9-V0 st-se - In Stock 0.00
153600 Pressure switch GW 50 A4 Ag-M-MS9-V0 st-se 0.00
157050 Pressure switch GW 150 A4 Ag-M-MS9-V0 st-se 0.00
219011 Pressure switch GW 150 A4 Ag-M-MS9-V0 st-se 0.00
197300 Pressure switch GW 50 A4 Ag-G3-MS9-V0 st-se 0.00
215130 Pressure switch GW 150 A4 Ag-G3-MS9-V0 st-se 0.00
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