The Belimo Sf series damper actuator has a modulating control type. It is a spring return actuator with an emergency function for adjusting air dampers in ventilation and air conditioning systems in buildings. It has an adjustable U-clamp, which accepts round or square shafts. This actuator can be installed with a pre-tensioned spring. This product is controlled with a standard signal of DC 0V to 10 V and moves the damper to the operating position. It is overload proof, requires no limit switches. It requires 24VAC/VDC supply voltage.

The direction of rotation reversible
Spindle driver universal spindle clamp
Operating voltage range is between 2VDC and 10VDC
Running springtime is <20s
PVC connection cable length is 1m
Motor and return torque is 20Nm
Maximum damper area is 4m²
Damper spindle compatibility ranges between 10mm and 25.4mm
Power consumption is 5W
Noise level 40dB
Damper spindle size is between 10mm and 25.4mm
Rated impulse voltage is 0.8kV
Maintenance-free
Service life min. 60,000 emergency positions

UL 60730-1A
UL 60730-2-14
CAN/CSA E60730-1:02 certified
IEC/EN 60730-1
IEC/EN 60730-2-14