Siemens SIRIUS ACT 3SU1 - Terminal Designations

3SU14 modules
8.1 Overview
SIRIUS ACT 3SU1 pushbuttons and signaling devices
170 System Manual, 08/2018, A5E03457306020A/RS-AK/010
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