Cut-off relay, 2-gang DRA Features: Simultaneous control of more than one blind drive. In each case, two drives are electrically decoupled with one cut-off relay. With two auxiliary inputs for the individual operation of the blinds and a central input for a central function, e.g. of a timer or for implementing central controllers for distribution among several RCCBs. Notes : The DRA cut-off relay is mounted on a cap profile rail.