Siemens SIRIUS 3RH Series - Components and Combinations; Switching and Starting; SIRIUS 3 RT2 Contactors

System overview
1.7 Components and combinations
SIRIUS Innovations
42 System Manual, 01/2011, A8E56203870002-03
1.7 Components and combinations
1.7.1 Switching and starting
1.7.1.1 SIRIUS 3RT2 contactors
3RT2 contactors
Figure 1-11 S0 contactor
SIRIUS 3RT2 contactors and contactor assemblies offer maximum flexibility in terms of
dimensioning, handling, and function:
Table 1- 9 3RT2 contactors and contactor assemblies
Area Customer benefits
Functions
 Power contactors (motors, resistive loads) and contactor relays
 Conventional (S00 and S0) and electronic drive (S0 only; reduced power
consumption)
 Function modules for mounting on contactors and for connection to the
automation level (AS-i/IO-Link)
 Reversing contactor: space-saving mechanical interlock for S00 and S0
Dimensioning and
design
 Performance increase: S00 (7.5 kW, 16 A), S0 (18.5 kW, 38 A)
 Width 45 mm
 Integrated auxiliary switches in both S00 and S0
 Auxiliary switches in identical design for S00 and S0
 Screw-type, spring-loaded, and ring cable lug connection systems, plus
solder pin connection system (S00 only)
Mounting
advantages
 Contactor assemblies (for star-delta (wye-delta) start, reversing contactor
assembly, 2 contactors in series)
 Contactor assembly for star-delta (wye-delta) start:
– Up to 22 kW
– Control circuit wiring integrated in function modules, incl. electrical and
mechanical interlock
 Easy assembly of contactor assemblies and feeders by means of link
modules for screw-type and spring-loaded terminals
 Integrated cable duct for feeder-oriented assembly (with S0)