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Möhlenhoff Alpha 5 actuator 230V NC, AST 20405-00N80-1S with fixed cable and valve adapter VA 80


The Alpha 5 actuator: 230 V with fixed cable is a thermoelectric actuator for opening and closing small valves and valves on heating circuit distributors of surface heating and cooling systems. The main area of application is energy-efficient individual room control in the area of Housing technology and building automation. The Alpha 5 actuator: 230 V with fixed cable is controlled by a 230 V Raumtemperaturregler with two-point output or pulse width modulation.


• Version in currentless-closed (NC)

• Only 2000 watts power consumption

• fixed cable with water-protected connection

• Easy installation

• 360° mounting

• Patented 100% protection against leaky valves

• “First-Open” function

• Adjustment control on the valve

• Alignment aid on the valve

• Compact design, small dimensions

• All-round function display

• High functional reliability and life expectancy

• Overvoltage guarantee

• Certified by TÜV-SÜD


Technical features


  • Length: 58 mm
  • Width: 44 mm
  • Height: 52 mm
  • Voltage type: ac
  • Display: No
  • First-Open: Yes
  • Function: Thermal
  • Return channel: No
  • Voltage: 230 V
  • Valve travel detection: No
  • Actuating force: 100 N
  • travel: 4 mm
  • Sense of action: NC
  • Power consumption: 2000 W
  • Communication: Kabel
  • Power supply: mains connection


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You're reviewing:Möhlenhoff Alpha 5 actuator 230V NC, AST 20405-00N80-1S with fixed connection cable and VA 80 valve adapter 230 V, NC, 4 mm, with first-open function, fixed connection cable, valve adapter VA 80
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