Dungs AA A1 Differential Pressure Switch for air or flue and exhaust gases 

Dungs Differential Pressure Switch type AA A1 are compact pressure switches for au-tomatic burner controls. Available with hose connections.Dungs AA A1 Differential Pressure Switch are suitable for making and/or breaking a circuit when the medium pressure changes relative to the set point. 

Application

Dungs Differential Pressure Switch type AA A1 monitoring in firing, ventilation and air-conditioning systems. The AA-A1... can be used as a pressure, vacuum or differential pressure switch for air and non-aggressive gases. Not suitable for natural gas, propane, butane and other combustable gases.

Specifications

Max. operating pressure :

1.5 PSI (103 mbar)

Pressure connection :

0.16" (4 mm) diameter hose connection

Temperature range :

Ambient / Medium :

• UL, FM -40 °F to +150 °F (-40 °C to +66 °C)
• CSA -40 °F to +104 °F (-40 °C to +40 °C)

Storrage :

• -40 °F to +150 °F (-40 °C to +66 °C)

Materials :

• Housing: Polycarbonate
• Switch: Polycarbonate
• Diaphragm: NBR-based rubber
• Switching contact: Silver (Ag)

Electrical ratings :

• AC eff. min. 24 V max. 240 V
• DC min. 12 V max. 48 V

Current ratings :

• AC 5 A resistive @ 240 VAC
• AC 3 A inductive @ 240 VAC
• DC min. 20 mA @ 24 VDC
• DC max. 1 A @ 12 - 48 VDC

Electrical connection :

1/4 x 1/32" (6.3 x 0.8 mm) flat male terminals

Dungs AA A1 Differential Pressure Switch for air or flue and exhaust gases

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