Auxiliary Circuit - Siemens SIRIUS 3RT Series System Manual

5.10.2.4

Auxiliary circuit

Table 5- 41 Technical data for the auxiliary circuit connection, 3RU21 overload relays
Type
Size
Width
Number of NO contacts
Number of NC contacts
Auxiliary contacts - Assignment
Rated insulation voltage U
(pollution degree 3)
Rated impulse withstand voltage U
Contact rating of the auxiliary contacts
NC with alternating current AC-14/AC-15,

rated operational current I
- 24 V
- 120 V
- 125 V
- 230 V
- 400 V
- 600 V
- 690 V
NO with alternating current AC-14/AC-15,

rated operational current I
- 24 V
- 120 V
- 125 V
- 230 V
- 400 V
- 600 V
- 690 V
NC, NO with direct current DC-13,

rated operational current I
- 24 V
- 60 V
- 110 V
- 125 V
- 220 V
Conventional thermal current I

Contact reliability

(suitability for PLC, 17 V, 5 mA)
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
V
i
kV
imp
at U
e e
A
A
A
A
A
A
A
at U
e e
A
A
A
A
A
A
A
at U
e e
A
A
A
A
A
A
th
3RU21 16
S00
45 mm
1
1
1 NO for the "tripped" signal;
1 NC for disconnecting the contactor
690
6
4
4
4
3
2
0.75
0.75
3
3
3
2
1
0.75
0.75
1
1)
0.22
0.22
0.11
6
Yes
SIRIUS 3RU2/3RB3 overload relays
5.10 Technical data
3RU21 26
S0
45 mm
543