actuators: with return spring
LF – 4 Nm
Actuator for air dampers with return spring. It is intended for the control of dampers in building installations and enables the implementation of safety functions.
– for dampers with an area up to approx. 0.8 m2
– torque 4 Nm
– AC 24 V rated voltage
| Type | with return spring |
| Actuator | rotary |
| Power [V] | 230 (AC), 48 (DC), 24 (AC/DC), 24 (AC) – depends on type and version |
| Control | 3-point, on / off, analog, digital, PWM (pulse width modulation) |
| Torque [Nm] | 4 (nom) |
| Max. rotary angle [°] | 95 |
| Run time for angle / stroke [s] | <75-150 (motor); <16 (spring) |
| Clamping for the damper axis [mm] | 8-16 |
| Damper surface [m2] | < 0,8 (multileaf dampers with air flow up to 8 m / s) |
| Protection class | IP 54 |
| Environment temp. [°C] | from -30 to +50 |
| Warranty | 5 years |
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