Table of contents 
 
SIRIUS Innovations 
System Manual, 01/2011, A8E56203870002-03 
9 
2.8.1.10  Rated data for auxiliary contacts (CSA and UL)........................................................................251 
2.8.1.11  Main circuit - 3RT202. contactors (current carrying capacity for direct current)........................252 
2.8.1.12  C
onductor cross-sections - 3RT202. contactors........................................................................254 
2.8.1.13 
Rated data (CSA and UL) for 3RT201. and 3RT202. contactors ..............................................256 
2.8.2  Conta
ctors for specific applications (3RT23 and 3RT25) ..........................................................258 
2.8.2.1  Gene
ral data, short-circuit protection for contactors without overload relay and actuation 
(3RT231. and 3RT232. contactors) ...........................................................................................258 
2.8.2.2 
Main ci
rcuit - 3RT231. and 3RT232. (current carrying capacity for alternating current and 
direct current).............................................................................................................................261 
2.8.2.3 
Gene
ral data, short-circuit protection for contactors without overload relay and actuation 
(3RT251. and 3RT252. contactors) ...........................................................................................263 
2.8.2.4 
Main ci
rcuit - 3RT251. and 3RT252. (current carrying capacity for alternating current and 
direct current).............................................................................................................................264 
2.8.3 
Contac
tors with extended operating range ................................................................................266 
2.8.3.1  Contactors for rail
way applications ............................................................................................266 
2.8.3.2  Coupling relay
s ..........................................................................................................................267 
2.8.4  3RH2 contac
tor relays ...............................................................................................................271 
2.8.4.1  Permissibl
e mounting position, positively driven operation of contacts and contact 
reliability of 3RH2 contactor relays (4- and 8-pole)....................................................................271 
2.8.4.2 
Gene
ral data, rated data (CSA and UL), and data relating to short-circuit protection for 
3RH2. contactor relays ..............................................................................................................272 
2.8.4.3 
Conduc
tor cross-sections - 3RH2. contactor relays ..................................................................274 
2.8.4.4  Ac
tuation - 3RH2. contactor relays ............................................................................................275 
2.8.4.5  Load 
side of 3RH2. contactor relays..........................................................................................277 
2.8.5  Acce
ssories for 3RT2 contactors and 3RH2 contactor relays ...................................................279 
2.8.5.1  General data 
- Pneumatic timer 3RT2926-2P. ..........................................................................279 
2.8.5.2  General data 
- OFF-delay device 3RT2916-2B.........................................................................280 
2.8.5.3  Gene
ral data - Terminal module for contactors with screw connection.....................................282 
2.8.5.4  General data 
- Mechanical latch 3RT2926-3A...........................................................................284 
2.8.5.5  Gene
ral data - Control side and load side - coupling link 3RH2924-1GP11 .............................285 
2.9 
Dimens
ion drawings (dimensions in mm) ..................................................................................287 
2.9.1 
Contac
tors and contactor relays (size S00)...............................................................................287 
2.9.2  Contac
tors (size S0) ..................................................................................................................291 
2.10  C
ircuit diagrams .........................................................................................................................294 
2.10.1 
Contac
tors and contactor accessories.......................................................................................295 
2.10.2  Rev
ersing contactor assembly (S00/S0) ...................................................................................309 
2.10.3 
Contactor assemblies for star-delta (wye-delta) start ................................................................310 
3  SI
RIUS 3RF34 solid-state switching devices ......................................................................................... 313 
3.1  Safety
 instructions......................................................................................................................313 
3.1.1 
Standards
...................................................................................................................................315 
3.2  Produc
t description ....................................................................................................................316 
3.2.1 
Dev
ice versions..........................................................................................................................316 
3.2.2  Applic
ations................................................................................................................................318 
3.2.3  Applic
ation environment.............................................................................................................319 
3.2.4  Solid-s
tate switching devices.....................................................................................................320 
3.2.5  Device label
s..............................................................................................................................322 
3.2.6  Adv
antages of solid-state switching devices .............................................................................325 
3.3  Produc
t combinations ................................................................................................................326 
3.4 
Func
tions....................................................................................................................................327 
3.4.1 
Ac
tuation of solid-state switching devices .................................................................................328