Damper Actuators

Damper actuators are air management accessories. These are devices that stop or regulate the flow of air inside a duct, chimney, VAV box or other air-handling equipment. They’re commonly used in heating, ventilation and air conditioning (HVAC) systems. 


How do damper actuators work?


A damper actuator requires a control signal and a source of energy, typically an electrical current, hydraulic fluid pressure or pneumatic pressure. They then convert that energy into motion.


Damper actuators may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control. This in turn helps you to save on energy and energy bills. 


Types of damper actuators 


There are two types of damper actuators: modulating and open/close. A modulating damper actuator will position, or throttle, the damper or valve to achieve a desired position or flow. An open/close damper actuator produces a two-position response (0% open or 100% open). 


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Description Price Return Type Maximum Damper Area Damper Spindle Compatibility Switch Included Power Consumption Control Type Supply Voltage Motor Torque Return Torque Noise Level Maximum Damper Spindle Size Minimum Damper Spindle Size
RS Stock No. 504-1258
Mfr. Part No.NM230A
BrandBelimo
HK$1,064.61
Each
units
- 2m² 8 → 26.7mm - 2.5W Open/Close 240 V ac 10Nm - 35dB(A) 26.7mm 8mm
RS Stock No. 504-1236
Mfr. Part No.LM230A-S
BrandBelimo
HK$957.14
Each
units
- 1m² 6 → 20mm Yes 1.5W Open/Close 240 V ac 5Nm - 35dB(A) 20mm 6mm
RS Stock No. 504-1286
Mfr. Part No.SM230A
BrandBelimo
HK$688.53
Each
units
- 4m² 10 → 20mm - 2.5W Open/Close 240 V ac 20Nm - 45dB(A) 20mm 10mm
RS Stock No. 504-1309
Mfr. Part No.SM24A-SR
BrandBelimo
HK$1,624.94
Each
units
- 4m² 10 → 20mm - 2W Modulating 24 V ac/dc 20Nm - 45dB(A) 20mm 10mm
RS Stock No. 504-1270
Mfr. Part No.NM24A-SR
BrandBelimo
HK$1,465.54
Each
units
- 2m² 8 → 26.7mm - 2W Modulating 24 V ac/dc 10Nm - 35dB(A) 26.7mm 8mm
RS Stock No. 712-2655
Mfr. Part No.SF24A-SR
BrandBelimo
HK$2,288.00
Each
units
Spring Return 4m² 10 → 25.4mm - 5W Modulating 24 V ac/dc 20Nm 20Nm 40dB(A) 25.4mm 10mm
RS Stock No. 834-8293
Mfr. Part No.SFA-S2
BrandBelimo
HK$2,477.14
Each
units
Spring Return 4m² 10 → 25.4mm Yes 7W Open/Close 19.2 → 264 V ac, 21.6 → 137.5 V dc 20Nm 20Nm ≤45 (Motor) dBA, ≤62 (Spring Return) dBA 25.4mm 10mm
RS Stock No. 504-1242
Mfr. Part No.LM24A-S
BrandBelimo
HK$934.35
Each
units
- 1m² 6 → 20mm Yes 1W Open/Close 24 V ac/dc 5Nm - 35dB(A) 20mm 6mm
RS Stock No. 504-1220
Mfr. Part No.LM24A-SR
BrandBelimo
HK$1,154.15
Each
units
- 1m² 6 → 20mm - 1W Modulating 24 V ac/dc 5Nm - 35dB(A) 20mm 6mm
RS Stock No. 834-7701
Mfr. Part No.NM24A-SR-TP
BrandBelimo
HK$1,494.18
Each
units
- 2m² 8 → 20 mm, 8 → 26.7 mm Yes 2W Modulating 24 V ac/dc 10Nm - 35dB 20 mm, 26.7 mm 8mm
RS Stock No. 504-1214
Mfr. Part No.LM24A
BrandBelimo
HK$840.50
Each
units
- 1m² 6 → 20mm - 1W Open/Close 24 V ac/dc 5Nm - 35dB(A) 20mm 6mm
RS Stock No. 504-1292
Mfr. Part No.SM24A
BrandBelimo
HK$1,130.04
Each
units
- 4m² 10 → 20mm - 2W Open/Close 24 V ac/dc 20Nm - 45dB(A) 20mm 10mm
RS Stock No. 504-1337
Mfr. Part No.GM24A-SR
BrandBelimo
HK$2,428.03
Each
units
- 8m² 12 → 26.7mm - 4.5W Modulating 24 V ac/dc 40Nm - 45dB(A) 26.7mm 12mm
RS Stock No. 504-1191
Mfr. Part No.LM230A
BrandBelimo
HK$840.50
Each
units
- 1m² 6 → 20mm - 1.5W Open/Close 240 V ac 5Nm - 35dB(A) 20mm 6mm
RS Stock No. 795-9441
Mfr. Part No.8751029000
HK$2,345.66
Each
units
- 4m² 10 → 20mm Yes 2W Modulating 24 V ac/dc 20Nm - - 20mm 10mm
RS Stock No. 795-9445
Mfr. Part No.8751021000
HK$2,068.01
Each
units
- 4m² 10 → 20mm No 2.5W Open/Close 230 V ac 20Nm - - 20mm 10mm
RS Stock No. 795-9463
Mfr. Part No.8455001000
HK$1,029.14
Each
units
- - - Yes - - 24 V ac - - - - -
RS Stock No. 504-1624
Mfr. Part No.HT24-3
BrandBelimo
HK$1,130.04
Each
units
- - - - 1.5W Open/Close 24 V ac 10Nm - 35dB(A) - -
RS Stock No. 504-1630
Mfr. Part No.HT 24-SR
BrandBelimo
HK$1,634.32
Each
units
Spring Return - - - 1.5W Modulating 24 V ac/dc 10Nm - 35dB(A) - -
RS Stock No. 504-1321
Mfr. Part No.GM24A
BrandBelimo
HK$2,101.18
Each
units
- 8m² 12 → 26.7mm - 4W Open/Close 24 V ac/dc 40Nm - 45dB(A) 26.7mm 12mm
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