Siemens SIRIUS 3RT - Terminal Designations and Identification Numbers for Auxiliary Contacts

Accessories
9.3 Auxiliary switch blocks
SIRIUS - SIRIUS 3RT Contactors/Contactor assemblies
292 Manual, 09/2017, A5E03656507120A/RS-AE/006
9.3.2.3
Terminal designations and identification numbers for auxiliary contacts
Terminal designations
The terminal designations are 2-digit, e.g. 13, 14, 21, 22:
● Tens digit: Sequence number
– Related terminals have the same sequence number
● Units digit: Function number
– 1 to 2 for NC contact
– 3 to 4 for NO contacts
Identification numbers
The identification number indicates the number and type of the auxiliary contacts, e.g. 40,
31, 22, 13:
● First digit: Number of NO contacts
● Second digit: Number of NC contacts
Examples:
● 31 = 3 NO contacts + 1 NC contact
● 40 = 4 NO contacts
Expansion of the contactors (sizes S6 to S12)
On contactors of sizes S6 to S12, 1-pole auxiliary switch blocks can also be attached as an
alternative to the 4-pole auxiliary switch blocks.
The terminal designations of the 1-pole auxiliary switch blocks consist of identification
numbers (location identifiers) on the basic unit, and function numbers on the auxiliary switch
blocks.