SIRIUS 3RT2 contactors/contactor assemblies   
2.8 Technical data 
  SIRIUS Innovations 
272  System Manual, 01/2011, A8E56203870002-03 
Table 2- 112  Contact reliability of 3RH2 contactor relays 
Type  3RH2 
Size  S00 
Contact reliability 
Contact reliability at 17 V, 1 mA acc. to DIN EN 60947-5-4  Frequency of contact faults < 10-8, i.e. <  1 error per 
100 million operating cycles 
2.8.4.2  General data, rated data (CSA and UL), and data relating to short-circuit protection for 
3RH2. contactor relays 
Table 2- 113  General data – 3RH2. contactor relays 
Type  3RH21, 3RH22  3R24 
Size  S00 
General data 
  Basic device 
30 million  5 million 
  Basic device with snap-
on auxiliary switch block
10 million 
Mechanical durability 
  Solid-state compatible 
auxiliary switch block 
Opera
ting 
cycles 
5 million 
Rated insulation voltage U
i
 (pollution degree 3)  V  690 
Rated impulse withstand voltage U
imp
 kV 6 
Protective separation between coil and contacts in basic 
device acc. to DIN EN 60947-1, Annex N 
V  400 
  Operation 
°C  -25 … + 60 Permissible ambient 
temperature 
  Storage 
°C  -55 … + 80 
Degree of protection to EN 60947-1, Annex C    IP20, drive system IP40 
Touch protection acc. to DIN EN 50274    Finger-safe 
Shock resistance 
g/ms  7.3/5 and 4.7/10 
  Rectangular pulse 
AC operation/DC operation 
g/ms  > 10/5 and > 5/10 
g/ms  11.4/5 and 7.3/10 
  Sine pulse 
AC operation/DC operation 
g/ms  > 15/5 and > 8/10