Siemens SIRIUS ACT 3SU1 System Manual page 223

EMERGENCY STOP according to ISO 13850
For control systems according to IEC 60204-1 or DIN EN 60204-1 (VDE 0113 Part 1), the
mushroom pushbuttons of the 3SU10 series can be used as EMERGENCY STOP devices.
Grounding
The enclosure must be grounded if it contains metal actuating elements. The base of metal
enclosures has a grounding stud
Plastic enclosures containing metal actuating elements can be grounded via metal holders.
For further information refer to Chapter "Holders (Page 213)".
Contact modules and LED modules
Contact modules and LED modules for base mounting are snapped into the enclosure base.
Base mounting is not provided for on the enclosures with raised cover.
The following elements can be attached for each command point:
● 3 contact modules or
● 2 contact modules and 1 LED module or
● 2 contact modules and 1 ASIM 2F-DI / LED
Due to the high contact stability, the contact modules are also suitable for use in electronic
controllers. The function numbers are located on the contact modules.
As well as base mounting, it is also possible to use 1-pole contact and LED modules for front
plate mounting.
You can find information on the modules in Chapter "3SU14 modules (Page 169)".
SIRIUS ACT 3SU1 pushbuttons and signaling devices
System Manual, 08/2018, A5E03457306020A/RS-AK/010
10.1 Enclosures for actuating and signaling elements
①
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3SU18 enclosures
223