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3RT1/3RH1 contactors
SIRIUS System Manual
GWA 4NEB 430 0999-02b
3-61
3.4.1.3 Auxiliary switches that can be attached to 3RH1 auxiliary contactors
The 3RH1 auxiliary contactors can be expanded by up to 4 contacts using
attachable auxiliary switch blocks.
Definition:
EN 50 011
The main standard for the designation of switching elements for the auxiliary
contactors is EN 50 011, which defines the terminal markings, identification
numbers, and identification letters of certain auxiliary contactors using a spe-
cific sequence of the switching elements. The number, type, and position of
the switching elements must be specified using an identification number fol-
lowed by an identification letter.
In the case of 8-pole auxiliary contactors, the letter "E" means that four NO
contacts have to be arranged on the lower (rear) contact level.
Expansion using auxil-
iary switch blocks
The following example of an auxiliary contactor with 4 NO contacts (contact
designation in acc. with EN 50 011 and EN 50 005) explains how auxiliary
switch blocks are added on:
Figure 3-38: Auxiliary contacts for auxiliary contactors
Hilfsschütze
DIN EN50 005,
8 oder 6 Kontakte
NS
B
0
00
67
identification no.
31E, 22E
identification no. 40E
identification no. 80E,
71E, 62E, 53E, 44E
auxiliary switch blocks,
4 contacts
identification no.
40, 31, 22, 20, 11, 02
auxiliary switch blocks,
4 or 2 contacts
identification no. 80E,
71E, 62E, 53E, 44E
auxiliary contacts,
DIN EN 50 011
8 contacts
identification no.
40, 31, 22, 20, 11, 02
auxiliary contacts,
DIN EN 50 005,
8 or 6 contacts
auxiliary contactors,
DIN EN 50 011, 4 contacts
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