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SM A-(S) • Actuators 20Nm

Servomotor for air volume control dampers of up to 4 m² depending on the type of air valve and the pressure on the valves. Simple direct mounting on the damper axe with a universal spindle clamp, supplied with an anti-rotation strap to prevent the actuator from rotating. Type S : With integrated 0-100% auxiliary switch for adjustable signalization.

Brand

  • Belimo

Application

  • Dampers

Specifications

  • Torque 20 Nm
  • Nominal Voltage SM 230A-(S) 230 V AC
  • Nominal Voltage SM 24A-(S) 24 V AC/DC
  • Control : open-close or 3-point
  • Auxiliary switch: 1 x SPDT, 1 mA … 3 (0,5) A, AC 250 V (0-100% adjustable)

Accessoires

  • Auxiliary switchs, type S1A (1) or S2A (2)
  • Shaft extension, type AV8-25

Technical data

  • Power consumption:
  1. In operation: 2,5W @ nominal torque SM 230A-(S) / 2W @ nominal torque SM 24A-(S)
  2. At rest: 0.6W SM 230A-(S) / 0.2W SM 24A-(S)
  3. For wire sizing: 6 VA SM 230A-(S) / 4 VA SM 24A-(S)
  • Direction of rotation: reversible with switch 0 or 1
  • Manual override: gearing latch disengaged with pushbutton, self-resetting
  • Angle of rotation: max. 95° , limited on both sides by means of adjustable, mechanical end stops. The actuator is overload proof; requires no limit switches and automatically stops when the end stop is reached
  • Running time: 150 s
  • Sound power level: max. 45 dB (A)

  • Position indication: mechanical, pluggable

  • Protection: IP54 in any mounting position

Electrical diagram

Text for tender

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  • The servomotor shall be of the open-close type with a torque of 20 Nm for direct mounting on the damper axe. With integrated 0-100% auxiliary switch (Type S). With reversible direction of rotation, angle max 95° with mechanical end stops. Protection class II totally insulated, IP 54 in any mounting position EMC: CE according to 89/336/EEC.
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