Accessories
4.8 Residual current devices
3VA molded case circuit breakers with IEC certificate
442
Manual, 03/2019, A5E03603177010-03
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AL
Signaling switch for pre-alarm. This auxiliary switch operates as soon as the residual
current exceeds 30% of the operating current setting value. The relay for the pre-alarm
signal (AL) drops out again as soon as the residual current reaches or falls below the pre-
alarm threshold of 30%.
Since the relay for the pre-alarm signal (AL) is a monostable relay, the relay switches
back to the original state in the event of a power outage.
The standard auxiliary switches for pre-alarms and tripped signals have changeover contacts
and screw-type connections.
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 250 V AC (AC-13).
The common terminal (11C = Common) is designed such that the maximum permissible
current of 5 A can be applied to both relay contacts (TRIP-IND and AL) simultaneously.
Note
Cables for the following terminals must be routed separately from the main circuits. Their
maximum cable length is 300 m.
