Product Overview

3RT1 contactors/3RH1 control relays
SIRIUS System Manual
3-88 GWA 4NEB 430 0999-02 DS 01
Auxiliary contacts
S0 to S12
The following graphic shows you the front mount auxiliary contacts that can
be used to expand the contactors of frame sizes S0 to S3 (terminal marking
in acc. with EN 50 005 or EN 50 012):
4-pole auxiliary contact blocks 1-pole aux. contact blocks
Fig. 3-43: Auxiliary contacts for contactors for the switching of motors (frame sizes S0 to S12)
3.4.1.2 Terminal markings of the contactors and control relays combined with auxiliary switch
blocks
Terminal markings in
acc. with DINEN50005
The terminal markings for contactors are defined in EN 50 005 that contains
general directives. The following summarizes the basic rules that apply to
switching elements of auxiliary circuits:
• The terminals of auxiliary contact elements are designated by two-digit
numbers.
• The digit in the unit place is a function number (NC contact: 1 and 2,
NO contact: 3 and 4).
• The digit in the tens place is a sequence number (all the switching ele-
ments of the same function must have different sequence numbers).
Identification numbers
(DIN EN 50 005)
The identification numbers mean:
Switching devices with a fixed number of auxiliary contact elements (NO
contacts or NC contacts) can be assigned a two-digit identification number.
The first digit represents the number of NO contacts and the second one
the number of NC contacts.
There is no information on the sequence of NO contacts and NC contacts in
the contactor/control relay.
Note
The identification numbers on the auxiliary switch blocks only apply to the
attached auxiliary switches.
NSB00452a
contactors
3RT10 2.
3RT10 3.
3RT10 4.
without auxiliary
contact
auxiliary switch blocks,
with 4 contacts 3RH19 21-. FA..
in acc. with DIN EN 50 005
identification no. 40, 31, 22,
04, 22U
contactor arrangements
with a 4-pole auxiliary switch
block, terminal markings
in acc. with DIN EN 50 005
identification no. 40, 31, 22, 02
auxiliary switch blocks,
with 4 contacts 3RH19 21-. HA..
in acc. with DIN EN 50 012
identification no. 31, 22, 13
contactor arrangements with
a 4-pole auxiliary switch block,
terminal markings
in acc. with DIN EN 50 012
identification no. 31, 22, 13
1 NO 1 O
NSB00451a
auxiliary switch blocks,
with 1 contact
possible contactor
arrangements with 1-pole
auxiliary switch blocks,
terminal markings in acc. with
DIN EN 50 005 or
DIN EN 50 012
identification numbers:
01, 10
11
21, 12
31, 22, 13
02, 20
03, 30
04, 40
contactors
3RT10 2.
3RT10 3.
3RT10 4.
without
auxiliary contact