Introduction
1.6 Article No. scheme
SIRIUS 3RN2 thermistor motor protection relay
12
Manual, 10/2016, A5E34244868002A/RS-AA/001
1.6
Article No. scheme
Note
The Article No. scheme is for illustrative purposes only and for better understanding of the
logic behind the article numbers.
For your orders, please use the article numbers quoted in the catalog in the Selection and
ordering data.
Table 1- 1
Article No. scheme
Digit of the Article No.
1 - 3 4 5 6 7
8 9 10 11 12
SIRIUS thermistor
motor protection relay
3 R N
☐
☐
☐
☐
-
☐
☐
☐
☐
0
Generation
☐
-
2 Generation
Sensor type
☐
-
0 Type A PTC
Number/type of sensor
circuits
☐
-
0 1 sensor circuit, supply voltage = relay
output voltage
1 1 sensor circuit
2 2 sensor circuits for warning and tripping
Resetting and further
functions
☐
-
0 Automatic reset
1 Manual reset, with wire-break and short-
circuit detection
2 Manual/auto/remote reset, non-volatile,
with wire-break and short-circuit
detection
3 Manual/auto/remote reset, non-volatile,
with wire-break and short-circuit
detection, with protective separation
Connection system
-
☐
1 Screw terminal
2 Spring-loaded terminal (push-in)
Output relay
-
☐
A 1 CO contact
B 2 CO contacts
C 1 NO c 1 NC contact
D 1 NO c 1 CO contact
G 2 CO contacts, hard gold-plated
Supply voltage
-
☐
A 24 V
W 24 … 240 V
Waveform of the
supply voltage
-
☐
3 50/60 Hz AC/DC
4 DC
Relay response to
power failure
☐
0 Monostable
1 Bistable
8 Special versions
Example
3 R N 2 0 0 0 - 1 A A 3 0
SIRIUS thermistor motor protection
relay, 2nd generation, type A PTC, 1
sensor circuit, automatic reset, screw-
type terminals, 1 CO, 24 V, 50/60 Hz
AC/DC, monostable