Siemens SIRIUS ACT 3SU1 - Page 397

3SU19 accessories
13.3 Protection
SIRIUS ACT 3SU1 pushbuttons and signaling devices
System Manual, 08/2018, A5E03457306020A/RS-AK/010
397
The protective cap must be properly attached and must not have any folds or similar faults.
During installation, make sure that no dents or bulges are formed.