Siemens 3VA1 100 A Manual page 307

Resetting
If the residual current device trips the molded case circuit breaker/switch disconnector due to
a high residual current or actuation of the test button, the <RESET> button on the RCD is
released. At the same time, the trip alarm switch which is mechanically coupled with the
<RESET> button also signals that a trip has occurred.
The <RESET> button is labeled with the letter "R".
The following actions must be taken in order to reset the residual current device and reclose
the main contacts of the molded case circuit breaker:
1. Press the <RESET> button on the residual current device.
The "tripped" signal at the signaling contacts is canceled, the residual current device is
now reset.
2. Reset and switch on the molded case circuit breaker or switch disconnector.
Note
If the main contacts of the molded case circuit breaker/switch disconnector are closed before
the residual current device has been reset, the molded case circuit breaker/switch
disconnector will be tripped again immediately (approx. 0.8 s) by the residual current device.
This also applies if the fault which leads to the trip has already been rectified.
Parameterization of the residual current device
①
②
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02
Setting button for response current I
Setting button for delay time Δt (RCD510 only)
Δn
Accessories
4.8 Residual current devices
307