Remote actuator 230V AC, 4 MW, In max. 63A, Switch-on

A remote actuator (ARD) is used to remotely switch connected circuit-breakers on and off. This significantly increases system availability. ARDs with an automatic function automatically switch the circuit-breaker back on. No reclosing occurs if a system error is detected. Series DFA devices are only designed for operation on Doepke residual current circuit-breakers DFS 2 or DFS 4. Depending on the design, the DFA devices are operated with different supply voltages, are fitted with relays to report the switching or locked status and either do not carry out any switch-on attempts or perform one or three attempts. The DFA devices are mounted to the RCCBs on the left. The number of restart attempts can be set to "1" or "3". The switch-on attempts in automatic mode are performed 15 seconds after a trip. This device can be decommissioned using a rotary switch on the housing cover so that no inadvertent remote operation, e.g. during maintenance work on the distribution board, is possible. This variant is supplied power from a voltage source of 230 V AC. Remote tripping through a residual current simulation is also possible. The current switch position of the protective switch ("switched on", "tripped" or "switched off") is indicated by three integrated relay switching contacts. A relay also signals the “locked” status.