Terminal Designations - Siemens SIRIUS ACT 3SU1 System Manual

3SU14 modules
8.1 Overview
8.1.2

Terminal designations

The terminal designations of the contact modules comply with EN 50013.
The terminal designations are 2-digit, e.g. 13, 14; 21, 22:
Units digit = function digit (specify on the contact module)
● 1-2 for normally closed contacts (NC)
● 3-4 for normally open contacts (NO)
Tens digit = Identification number (specify on the holder)
● Related terminals have the same sequence digits
Terminal designation example
Left-hand module:
● Sequence digit on holder = 1
● Function digit on module = .3
⇒ Terminal designation = 13
Right-hand module:
● Sequence digit on holder = 2
● Function digit on module = .4
⇒ Terminal designation = 24
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SIRIUS ACT 3SU1 pushbuttons and signaling devices
System Manual, 08/2018, A5E03457306020A/RS-AK/010