Belimo -Rotary actuator (RobustLine), 20 Nm, AC/DC 24 V, Open/close, 3-point, 150 s, 1x SPDT, IP66/67 - SM24P-S
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Description: RobustLine damper actuator designed for adjusting dampers in HVAC plants, comparable industrial plants, and technical building installations.

  • Suitable for air damper sizes up to approximately 4 m².
  • Equipped with a torque motor with 20 Nm capacity.
  • Operates on nominal voltage AC/DC 24 V.
  • Control mechanism: Open/close, 3-point.
  • Integrated with an auxiliary switch.
  • Offers optimal protection against corrosion, chemical influences, UV radiation, dampness, and condensation.

Electrical Data:

  • Nominal voltage: AC/DC 24 V
  • Nominal voltage frequency: 50/60 Hz
  • Nominal voltage range: AC 19.2...28.8 V / DC 19.2...28.8 V
  • Power consumption in operation: 2 W
  • Power consumption in rest position: 0.2 W
  • Power consumption for wire sizing: 4 VA
  • Auxiliary switch: 1x SPDT, 0...100%
  • Switching capacity auxiliary switch: 1 mA...3 A (0.5 A inductive), DC 5 V...AC 250 V
  • Connection supply/control: Cable 1 m, 3 x 0.75 mm² (halogen-free)
  • Connection auxiliary switch: Cable 1 m, 3 x 0.75 mm² (halogen-free)
  • Parallel operation: Yes

Functional Data:

  • Torque motor: 20 Nm
  • Direction of motion motor: Selectable with switch 0 (ccw rotation) / 1 (cw rotation)
  • Manual override: with push-button, can be locked
  • Angle of rotation: Max. 95°
  • Angle of rotation note: Can be limited on both sides with adjustable mechanical end stops
  • Running time motor: 150 s / 90°
  • Sound power level, motor: 45 dB(A)
  • Mechanical interface: Universal shaft clamp 14...20 mm
  • Position indication: Mechanical, pluggable

Safety Data:

  • Protection class: IEC/EN III, Safety Extra-Low Voltage (SELV)
  • Power source: UL Class 2 Supply
  • Protection class auxiliary switch: IEC/EN II, reinforced insulation
  • Degree of protection: IEC/EN IP66/67, NEMA/UL NEMA 4X
  • Enclosure: UL Enclosure Type 4X
  • EMC: CE according to 2014/30/EU
  • Low voltage directive: CE according to 2014/35/EU
  • Certification: IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14
  • UL Approval: cULus according to UL60730-1A, UL60730-2-14, and CAN/CSA E60730-1
  • Type of action: Type 1.B
  • Rated impulse voltage supply/control: 0.8 kV
  • Rated impulse voltage auxiliary switch: 2.5 kV
  • Pollution degree: 4

Part Numbers:
SM24P-S - Rotary actuator (RobustLine), 20 Nm, AC/DC 24 V, Open/close, 3-point, 150 s, 1x SPDT, IP66/67


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