>> Pressure switches >> GW A4
Pressure switch GW A4 Dungs for gas, air, flue gases, combustion products
- 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:
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Pressure switches for gas and air GW A4/2:
Legenda denumire presostate 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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