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3RT1/3RH1 contactors
SIRIUS System Manual
3-60
GWA 4NEB 430 0999-02b
EN 50 012/
EN 50 011
For certain equipment such as auxiliary contact elements of contactors and
auxiliary contactors, the EN 50 012 and EN 50 011 standards also apply.
The EN 50 012 defines the terminal markings and identification numbers for
auxiliary contact elements of particular contactors.
The terminal markings of the auxiliary contact elements match the terminal
markings of corresponding auxiliary contactors with the ID letter E (in acc.
with EN 50 011). For auxiliary contact elements of contactors with the same
identification number, the terminal marking must correspond to the
sequence defined in the standard.
Graphical symbols for
auxiliary contact ele-
ments
Below are some examples of graphical symbols for auxiliary contact ele-
ments of contactors that comply with EN 50 012:
Figure 3-36: Graphical symbols for auxiliary contact elements in acc. with EN 50 012 (excerpt)
Device circuit diagrams
The following device circuit diagrams of the auxiliary switch blocks for con-
tactors that switch motors contain the terminal markings in acc. with
EN 50 012:
3RT101 contactors
Contactors 3RT102, 3RT103, 3RT104, 3RT1446
4-pole auxiliary switch blocks 3RH1921-1HA.., can be snapped onto the
front
Figure 3-37: Device circuit diagrams of the auxiliary switch blocks (DIN EN 50 012)
14
22
34
44
13
21
33
43
14
22
34
44
13
21
33
43
Coil
Main contact elem.
54
53
ID
no.
Auxiliary contact elements
ID
no.
Auxiliary contact elements
14
22
32
44
13
21
31
43
14
22
32
44
13
21
31
43
54
53
ID
no.
Auxiliary contact elements
14
22
32
42
13
21
31
41
14
22
32
42
13
21
31
41
54
53
31
41
22
32
13
23
1
3
5
13
14
6
4
2
A2( )
A1(+)
21 31 43
44
32
22
2 NO + 2 NC contacts
Identification number: 22E
1
3 5
13
14
6
4
2
A2( )
A1(+)
21 31 41
42
32
22
53
54
1
3
5
13
14
6
4
2
A2( )
A1(+)
21 31 43
44
32
22
53
54
3 NO + 2 NC contacts
Identification number: 32E
2 NO + 3 NC contacts
Identification number: 23E
2 NO + 2 NC contacts
Identification number: 22
1 3 5 13
14
6
4
2
A2( )
A1(+)
21
22
31
32
43
44
NSK
-13
21
3 NO co 1
Identification no.: 31E
2 NO + 2 NC contacts
1 NO + 3 NC contacts
13 21 33
34
22
14
43
44
13 21 31
32
22
14
43
44
13 21 31
32
22
14
41
42