Siemens SENTRON 3VA1 Manual page 462

Accessories
4.8 Residual current devices
Alarm switch
Floating auxiliary contacts for 3 different alarms are provided:
● AL1
Signaling switch for pre-alarm threshold 1. This auxiliary switch operates as soon as the
residual current exceeds 30 % of the operating current setting value.
● AL2
Signaling switch for pre-alarm threshold 2. This auxiliary switch operates as soon as the
residual current exceeds 60 % of the operating current setting value.
● TRIP-IND (TRIP INDICATOR)
A tripped signal can be output via this auxiliary switch for connection to a warning lamp,
for example. The switch operates as soon as the residual current reaches or exceeds the
response current setting value and has therefore caused the residual current device to
trip.
Switches with changeover contacts and screw-type connections are used as standard as
auxiliary switches for pre-alarms and tripped signals.
The terminal designations of the relevant contact, the maximum rated voltage and the
current carrying capacity are shown in the diagram below.
Each relay contact has a maximum rated operational current of 5 A at 230 V AC. Since the
terminals have a maximum current carrying capacity of 13.5 A, the current flow across the
common terminal (01C = Common) must be limited to 13.5 A when all three signaling
switches are used.
The relays for the pre-alarm signals (AL1 and AL2) drop out again as soon as the residual
current reaches or exceeds the relevant pre-alarm thresholds.
460
3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03