>> Pressure switches >> GW A4 HP
High-pressure switch GW A4 HP Dungs for gas, air, flue, combustion products
- These pressure switches GW A4 HP and GW A4/2 HP 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.
- All gas-carrying parts are made of 1.4541 stainless steel parts, therefore, are suitable for: applications involving operating pressures greater than 600 mbar; aggressive media such as sulphuric acid up to a concentration of 1.0% by volume, humid; fluids (on request).
- Pressure switch as per EN 1854 (DIN 3398T3 - GW 6000 A4 HP) for burners.
- Maximum operating pressure: 2÷8 bar, setting ranges between 0.1÷6 bar. Ambient and medium temperature -15÷70oC, storage temperature -30÷80oC.
- Switching voltage: DC 5÷24 V, 24÷48 V; AC 24÷250 V. Nominal current: DC 20 mA (AC 10 A).
- The GW ... A4 HP version has a degree of protection IP 54 and a clear cover; the GW ... A4/2 HP 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.
- Detailed pictures for available models (move the mouse over them to zoom):
Function GW A4 HP:
Pressure switch for applications involving excess pressure. GW A4 HP counteracts the force of the setting spring on micro-switch via the metal bellows. The pressue switch does not
require power assistance. The switching mechanism reacts to overpressure and closes, opens or switches over a current circuit when the specified setpoint is overshot or undershot.
Technical specifications GW A4 HP pressure switches
| Pressure switch type | Code | Setting range (bar) | pmax (bar) | Degree of prot. | Δp (bar) | Medium p(+) | Electrical connection |
|---|---|---|---|---|---|---|---|
| GW 500 A4 HP | 254280 | 0.1 ÷ 0.5 | 2 @ 0.1÷0.15 bar 5 @ 0.15÷0.5 bar |
IP 54 | ≤0.03 | gas air liquid |
Terminal |
| 254285 | Plug | ||||||
| GW 2000 A4 HP | 246665 | 0.4 ÷ 2.0 | 5 | ≤0.10 | Terminal | ||
| 254286 | Plug | ||||||
| GW 6000 A4 HP | 246159 | 1.0 ÷ 6.0 | 8 | ≤0.30 | Terminal | ||
| 254287 | Plug | ||||||
| GW 500 A4/2 HP | 254281 | 0.1 ÷ 0.5 | 2 @ 0.1÷0.15 bar 5 @ 0.15÷0.5 bar |
IP 65 | ≤0.03 | gas air liquid |
Terminal |
| 254282 | Plug | ||||||
| GW 2000 A4/2 HP | 247903 | 0.4 ÷ 2.0 | 5 | ≤0.10 | Terminal | ||
| 254283 | Plug | ||||||
| GW 6000 A4/2 HP | 248678 | 1.0 ÷ 6.0 | 8 | ≤0.30 | Terminal | ||
| 254284 | Plug |
Air also means flue and exhaust gas.
Dimensions GW A4 (mm)
Pressure switches GW A4 HP:
For the images that aren't clear move the mouse over them to zoom.
Pressure switches GW A4/2 HP IP 65 with terminal connection:
SW = wrench width
Pressure switches GW A4/2 HP IP 65 with plug connection:
Type key GW A4 HP pressure switch
Prices for pressure switches GW A4 HP
| Code | Type | Prices without VAT |
|---|---|---|
| 254280 | Pressure switch GW 500 A4 HP Au-M-V0 st-se | 0.00 |
| 246665 | Pressure switch GW 2000 A4 HP Au-M-V0 st-se | 0.00 |
| 246159 | Pressure switch GW 6000 A4 HP Au-M-V0 st-se | 0.00 |
| 254285 | Pressure switch GW 500 A4 HP Au-G3-V0 st-se | 0.00 |
| 254286 | Pressure switch GW 2000 A4 HP Au-G3-V0 st-se | 0.00 |
| 254287 | Pressure switch GW 6000 A4 HP Au-G3-V0 st-se | 0.00 |
| 254281 | Pressure switch GW 500 A4/2 HP Au-M-V0 st-se | 0.00 |
| 247903 | Pressure switch GW 2000 A4/2 HP Au-M-V0 st-se | 0.00 |
| 248678 | Pressure switch GW 6000 A4/2 HP Au-M-V0 st-se | 0.00 |
| 254282 | Pressure switch GW 500 A4/2 HP Au-G3-V0 st-se | 0.00 |
| 254283 | Pressure switch GW 2000 A4/2 HP Au-G3-V0 st-se | 0.00 |
| 254284 | Pressure switch GW 6000 A4/2 HP Au-G3-V0 st-se | 0.00 |
In case the price is missing or for a list of discounts contact
us directly to receive an offer.