CU2B: Assembly of CU2 damper with maximum of 4 damper (B12, B21 o B22).

CU2B+CFTH : Rectangulars fire dampers CU2 with unlocking mechanism CFTH. It automatically unlatches the damper blade when the temperature in the duct rises above 72ºC. due to the rise in temperature the fusible link melts. This causes an armed internal torsion spring to unwind and thereby release the damper blade into its safety position (closed). The fusible link must be replaced after functioning.

CU2B+ONE T 24 FDCU : Rectangulars fire dampers CU2 with mechanism ONE T 24/230V FDCU. When powered, the actuator moves the damper blade into its stand-by position. When the power is interrupted or when the temperature in the duct exceeds 72ºC, the internal armed spring brings the damper blade back into its safety position. the motor can be reset manually by using a standard 9V battery. An integrated LED indicates the open or closes position of the motor. The included beginning and end of range switches indicate the position of the damper blade (on a control panel).