Modulating Damper Actuator, 20Nm, 24 V ac/dc

  • RS Stock No. 504-1309
  • Mfr. Part No. SM24A-SR
  • Manufacturer Belimo
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): CH
Product Details

Belimo Modulating Damper Actuator

The Belimo modulating damper 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. This actuator operates on stall torque technology, which does not require end switches. 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 4kV
Low power consumption up to 2W
Maximum damper area is 4m²
Damper spindle compatibility ranges between 10mm and 20mm
Motor torque is 20Nm
Noise level is 45dB


IP54 rated
UL Enclosure Type 2
IEC/EN 60730-1
IEC/EN 60730-2-14

Attribute Value
Maximum Damper Area 4m²
Damper Spindle Compatibility 10 → 20mm
Power Consumption 2W
Control Type Modulating
Supply Voltage 24 V ac/dc
Motor Torque 20Nm
Noise Level 45dB(A)
Maximum Damper Spindle Size 20mm
Minimum Damper Spindle Size 10mm
9 In Global stock for delivery within 4 - 6 working days
Price Each
MYR 957.40
Per unit
1 - 5
6 +