Accessories
4.8 Residual current devices
3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03
443
Use of signaling switches in SELV and PELV circuits:
The signaling switches TRIP-IND and AL meet the requirements for safety isolation
(including double insulation between the auxiliary current paths and the main circuit).
Requirement:
1. Molded case circuit breakers equipped with a residual current device are operated with a
rated operational voltage of 480 V AC.
2. The combination is installed at the distribution system level (overvoltage category III
according to DIN EN
60947-1 Annex H).
If these two requirements are met, the signaling switches are suitable for SELV and PELV
circuits.
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