Preventing fire and smoke from spreading via air ducts
Absolute safety in emergency situations
RAF actuators for fire protection dampers are
used at the interface between highly integrated security and people.
They work extremely reliably even in emergency
The spring return functions return them reliably
to the zero position – if the thermal fuse melts, a power failure
occurs or the operating power is switched off.
In these cases, the fire protection dampers are
shut, thus preventing smoke and flames from spreading through the
connected air ducts.
Powerful for opening and closing
The RAF actuators come in three powerful torques 5Nm, 10Nm and 15Nm
for dampers up to 3m2.
In addition, the actuators open and close the
dampers with the same torque.
For instance, the RAF actuator opens the damper
blade by motor from 0°-90° degrees within 75-95 second at
5Nm – and closes
the damper mechanically in 25 seconds, also at 8Nm.
This level of performance ensures that fire
protection dampers are closed especially quickly and reliably, thereby
helping to keep escape routes free of smoke for as long as possible.
Three powerful torques for additional safety –
5Nm, 10Nm and 15Nm
High reliability thanks to equal values for
opening and closing
Fast, easy installation thanks to safe,
easy-to-mount square shaft coupling