Technical data sheet
SM24A-S
SM24A-S • en-gb • 2022-07-18 • Subject to change
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Damper actuator for adjusting dampers in
technical building installations
• Air damper size up to approx. 4 m²
• Torque motor 20 Nm
• Nominal voltage AC/DC 24 V
• Control Open/close, 3-point
• with integrated auxiliary switch
Technical data
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
1 x SPDT, 0...100%
Switching capacity auxiliary switch
1 mA...3 A (0.5 A inductive), AC 250 V
Connection supply / control
Cable 1 m, 3 x 0.75 mm²
Connection auxiliary switch
Cable 1 m, 3 x 0.75 mm²
Parallel operation
Yes (note the performance data)
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 reversible 10...20 mm
Position indication
Mechanically, 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
IP54
Degree of protection NEMA/UL
NEMA 2
Enclosure
UL Enclosure Type 2
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
The UL marking on the actuator depends on
the production site, the device is UL-compliant
in any case
Mode of operation
Type 1.B
Rated impulse voltage supply / control
0.8 kV
Rated impulse voltage auxiliary switch
2.5 kV
Pollution degree
3