Siemens SIRIUS ACT 3SU1 - Page 178

3SU14 modules
8.1 Overview
SIRIUS ACT 3SU1 pushbuttons and signaling devices
178 System Manual, 08/2018, A5E03457306020A/RS-AK/010
Equipping with contact modules: Selector switch with 4 switch positions or coordinate switch on 4-slot
holder
● 4 x 2 single-pole contact modules
Max. 2 single-pole contact modules can be stacked in each holder slot
● 4 two-pole contact modules
It is possible to mix both variants (single-pole and two-pole contact modules), e.g. 4-slot
holder + 6 single-pole contact modules + 1 two-pole contact module.
The following diagrams illustrate by way of an example the maximum number of contact
modules that can be installed in a 4-slot holder
A
4-slot holder
B1 /
B2
Single-pole contact module
D
Two-pole contact module
4-slot holder 4 x 2 single-pole contact modules
4-slot holder 4 x two-pole contact modules