Figure 2-28: 3-Phase Busbar System; Table 2-17: Rated Operational Voltage/Current; Table 2-18: Types Of 3-Phase Busbars - Siemens sirius System Manual

2.4.9 Isolated 3-phase busbar system
Rated operational
voltage/current
Models
SIRIUS System Manual
GWA 4NEB 430 0999-02b
3-phase busbars are used to snap circuit breakers of frame sizes S00, S0,
and S2 quickly and easily in a row onto a rail. There is only one power supply,
via a feed-in terminal.
The 3-phase busbar systems are safe from fingers and are shock protected.
They are rated for the short-circuit stress that can occur on the output side
of the connected circuit breakers.
Feed-in terminal, connection
from above (3RV1915-5A)
Spacer
Feed-in terminal, connection
from below (3RV1915-5B)

Figure 2-28: 3-phase busbar system

Rated operational voltage
Rated current

Table 2-17: Rated operational voltage/current

The 3-phase busbars take 2 to 5 circuit breakers, depending on the model.
There are busbars with more generous spacing for circuit breakers with
accessories attached on the side.
Frame size
of the
Spacing
circuit
breaker
S00, S0 45 mm
55 mm
63 mm
S2 55 mm
75 mm

Table 2-18: Types of 3-phase busbars

3-phase busbar
3RV1915-.AB
690 V
Frame sizes S00, S0: 63 A
Frame size S2: 108 A
Models
For 2, 3, 4, or 5 circuit breakers
For 2, 3, 4, or 5 circuit breakers + accessories
For 2 or 4 circuit breakers + accessories
For 2, 3, or 4 circuit breakers
For 2, 3, or 4 circuit breakers + accessories
3RV1 circuit breakers
Protective cap
3RV1915-6AB
2-41