Siemens SIRIUS 3RH Series, System Manual

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SIRIUS 3RR2 current monitoring relays
8.10 Technical data
SIRIUS Innovations
738
System Manual, 01/2011, A8E56203870002-03
8.10.2 3RR21 Basic analog setting current monitoring relay
8.10.2.1 General technical data
Table 8- 18 General technical data for 3RR21 current monitoring relays
Type 3RR2141 3RR2142
Size S00 S0
Width 45 mm 45 mm
Tripping in the event of Overcurrent, undercurrent, phase failure
Phase loss sensitivity Yes

Number of phases
2
 Number of monitored phases 2
Overload warning No
Resetting and recovery

Reset options following tripping
Manual and automatic reset

Recovery time following error
- Automatic RESET s 0.3
- Manual RESET s 0.3
Adjustable ON-delay time

On startup
s 0 ... 60

On upper or lower limit violation
s 0 ... 30
Maximum response time ms 300
Relative switching hysteresis % 6.25
Relative repeat accuracy % 2
Ambient temperature
 Storage/transport
°C -40 ... + 80
 Operation °C -25 ... + 60
Resistance to extreme climates - Humidity % Condensation not permissible
Repeat terminals

Coil repeat terminal
Yes Not required

Auxiliary switch repeat terminal
Yes Not required
Degree of protection acc. to IEC 60529 IP20
Touch protection acc. to IEC 61140 Finger-safe
Shock resistance with sine
acc. to IEC 60068-2-27
g/ms 15 / 11
Vibration resistance Hz 10 to 55 per 0.35 mm