RS Components
Our website uses cookies and similar technologies to provide you with a better service while searching or placing an order, for analytical purposes and to personalise our advertising to you.

Open/Close Damper Actuator, 20Nm, 24 V ac/dc

32 In stock - FREE next working day delivery available
Add to Basket

Price Each


(exc. VAT)


(inc. VAT)



RS Stock No.:
Mfr. Part No.:
COO (Country of Origin):
UnitsPer unit
1 - 5£98.78
6 +£93.85

Belimo Damper Actuator

The Belimo damper actuator has an open/close control type. This actuator has an adjustable U-clamp, which accepts round or square shafts. It is a rotary/louver actuator. It is compatible with all the leading makes of HVAC controls. The damper actuator is used for adjusting air dampers in ventilation and air-conditioning system installed in buildings. This actuator operates on stall torque technology, which does not require end switches. The damper actuator has no limit switches and is overload-proof. It requires 24VAC/VDC supply voltage.

Optional auxiliary switch (stock no. 504-1545) suitable for use with LM, NM, SM, and GM damper actuators, features 2xSPDT switches rated at 3 (0.5)A 250Vac and supplied with 1m of cable.

Features and Benefits

Operation life is minimum 60000
Pushbutton manual override
Direction change switch
Cable length is 1m
Ambient temperature ranges between -30°C and 50°C
Rated impulse voltage is 0.8kV
Power consumption is 2W
Maximum damper area is 4m²
Damper spindle compatibility ranges between 10mm and 20mm
Motor torque is 20Nm
Noise level is 45dB


Suitable to use with LM, NM, SM, and GM damper actuators


IP54 rated
CE according to 89/336/EEC
UL Enclosure Type 2
IEC/EN 60730-1
IEC/EN 60730-2-14

Maximum Damper Area4m²
Damper Spindle Compatibility10 → 20mm
Power Consumption2W
Control TypeOpen/Close
Supply Voltage24 V ac/dc
Motor Torque20Nm
Noise Level45dB(A)
Maximum Damper Spindle Size20mm
Minimum Damper Spindle Size10mm