Max. Operating pressure: 500/600 mbar
Approvals: EN 1854
Technical description
The pressure limiters ÜB…A4 and NB…A4 are adjustable pressure switches as per EN 1854 for automatic burner controls.
They are suitable for switching a circuit on, off or over on changes in actual pressure value relative to the set reference value.
The reference value (switching point) is adjusted on a setting wheel provided with a scale. Test nipple integrated in metal housing as standard.
Application
Pressure monitoring in firing, ventilation and air-conditioning systems.
Suitable for gases of families 1,2,3 and other neutral gaseous media.
Approvals
EC type testing certificate as per:
• EC-Gas Appliances Regulation
• EC-Pressure Equipment Directive
Approvals in other important gas-consuming countries. Special designs for the North American market with UL, FM and CSA registrations.
Functional description
Single-acting pressure limiter in pressure range.
The pressure limiters work without using any auxiliary power.
