Description Of The Hardware - Siemens SIRIUS 3RA6 System Manual

7.8.2

Description of the hardware

3RV19 3-phase busbars enable several compact starters to be fed using a single infeed
terminal.
The 3RV19 3-phase busbars are finger-safe in terms of touch protection. They have been
dimensioned to withstand the level of short-circuit stress that can occur on the output side of
the connected compact starters.
Rated current/rated operating voltage
● Rated operating voltage: 690 V
● Rated current: 63 A
Versions
Depending on the version selected, the 3RV19 3-phase busbars can be used to connect
between 2 and 5 compact starters.
Combining compact starters with SIRIUS circuit breakers
You can combine compact starters with size S0 circuit breakers.
If you wish to combine compact starters with size S00 circuit breakers you will need to use a
connection piece (3RV1915-5DB). This connection piece is required, because the compact
starters and size S00 circuit breakers have different depths.
For additional information on combining the compact starter with SIRIUS size S00 circuit
breakers, please refer to "3RV19 3-phase busbar (Page 36)".
Extending 3-phase busbars
The 3-phase busbar can be extended by adding another busbar (rotated by 180°) and
pushing the terminal lugs of this new busbar underneath the terminals of the last compact
starter (see Configuration).
NOTICE
Material damage to the busbar and connecting terminals!
Thermal overloads can damage the busbar and connecting terminals.
When extending the 3-phase busbar, please remember to observe its current carrying
capacity.
SIRIUS 3RA6 compact starter
System Manual, 09/2014, NEB560060102000/RS-AA/006
Accessories
7.8 3-phase busbar
187