If there is a fire, when the air in the duct exceeds 72°C or 74°C, the thermal fuse melts in both actuator and manual models. This automatically closes the damper blade and locks it closed to prevent the spread of fire.
Made from galvanized sheet metal casing and blades from non-asbestos calcium silicate board with polyurethane foam seals, F-R60K Fire Dampers are built to handle smoke and gases – whether cold or hot.
F-R60K fire damper blades can be installed on or out of the shaft wall and are compact (100mm body length) to be installed quickly and simply wherever needed.
Made from sturdy galvanised steel. Casing leakage according to EN 1751 class C.
The duct seal is made of ethylene-propylene rubber.
Made from non-asbestos calcium silicate board with polyurethane foam seals for cold smoke and come with an intumescent seal that expands in case of fire.
Actuator-operated fire dampers are standardly equipped with a thermoelectric fuse, that activates the closing of the damper after the ambient air temperature reaches or passes 72°C, at which point the thermal fuse melts. The actuator power circuit is then interrupted, and its spring closes the damper blade within 20 seconds.