DUNGS GW 500 A4 223168

DUNGS GW 500 A4 Pressure Switch for Gas and Air Description The DUNGS GW 500 A4 is a compact and reliable adjustable pressure switch designed for monitoring pressure in industrial and commercial combustion systems. It is suitable for switching a circuit on, off or over on changes in actual pressure value relative to the set point. The set point can be easily adjusted using the dial without the need for a pressure gauge. Specifications Manufacturer: DUNGS Model: GW 500 A4 Part Number: 223168 Adjustable Range: 100 to 500 mbar Maximum Operating Pressure: 1 bar (1000 mbar) Media: Gas, Air, Flue Gas Electrical Connection: Screw terminals via PG 13.5 cable gland Switching Capacity: 10A at 250V AC Protection Rating: IP 54 Label Info ID-No: CE-0085 A00012 TUV Certification: 12/94 0165 Application This pressure switch is commonly used in gas trains for industrial burners, boilers, and heating appliances to ensure safe operating pressures are maintained. Country of Origin Made in Germany. CO2 Impact Opting for this pre-owned component saves approximately 20 kg of CO2 emissions compared to manufacturing a new one. Availability This item is in stock and ready for immediate dispatch. Order now from profideals for expert support and fast delivery. FAQ What is the switching differential of the GW 500 A4?The switching differential (hysteresis) for the GW 500 A4 is typically less than or equal to 20 mbar and is not adjustable. This ensures a stable switching point. Can this pressure switch be used for biogas applications?Standard versions are designed for natural gas and air. For aggressive gases like biogas, which may contain H2S, a special version (e.g., with a Viton diaphragm) is required. Please check the compatibility of this specific unit’s materials. How do I correctly wire the terminals (COM, 2NO) for a normally open application?For a normally open (NO) circuit that closes on rising pressure, you would connect your circuit to terminals COM (Common) and 2NO (Normally Open). The circuit will be complete when the pressure exceeds the setpoint. profideals is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. Last Update: Friday, March 13, 2026