Accessories
4.8 Residual current devices
3VA molded case circuit breakers with IEC certificate
400 Manual, 03/2019, A5E03603177010-03
The <RESET> button is not only used to reset the residual current device, but also as a
mechanical indication that the unit has "tripped". If a residual current is detected or the
button <TEST> is pressed, the button <RESET> is automatically released and so signals
that the residual current device has tripped. Even when the residual current device is at zero
potential, the <RESET> remains in the "TRIP" position.
Residual current device is operating nor-
mally and has not tripped
Residual current device has tripped
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