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Table Of Contents
3RV1 Circuit Breaker/MSP
SIRIUS System Manual
GWA 4NEB 430 0999-02 DS 01
2-45
Combination of
frame sizes S00
and S0
Circuit breakers/MSPs in frame sizes S00 and S0 vary in height and depth.
They therefore cannot be combined on one busbar. You can combine two
busbars for circuit breakers/MSPs in frame sizes S0 and S00 using an exten-
sion piece.
Extending the bus It is possible to extend the busbars by clamping the connecting lugs of a
another bus (turned 180°) under the terminals of the last circuit breaker/MSP
(see the section on mounting).
Attention
Note the current-carrying capacity of the busbars when you extend them.
Accessories The following accessories are available for the isolated 3-phase busbar sys-
tem:
Feeder lugs from above (3RV1915-5A for S00, 3RV1925-5AB for S0,
3RV1935-5A for S2)
Feeder lugs from below (3RV1915-5B for S00, S0)
Connector
A connector links two 3-phase busbars over a space of 45 mm for circuit
breakers/MSPs in frame size S0 (left) and frame size S00 (right).
Protective cap for connecting lugs (3RV19 15-6AB)
Protective caps provide shock protection for spare slots. To extend the
bus, remove the protective caps.
Feeder lugs 3-phase feeder lugs make it possible to have greater conductor cross-sec-
tions than on the circuit breaker/MSP itself.
Tightening torque: 2 to 4 Nm (17.6 to 35.2 lb·in).
Feeder lugs- connec-
tion from below
Attention
The feeder lugs with connection from below is clamped on instead of a cir-
cuit breaker/MSP. Make sure you check how much space you require when
planning the 3-phase busbars.
Frame size of
the circuit
breaker/MSP
Connec-
tion
Conductors
Conductor
cross-section
S00, S0 From above Single- or multi-core
Finely stranded with wire end
ferrule
AWG
2.5 to 25 mm
2
2.5 to 25 mm
2
12 to 4
S00, S0 From below Single- or multi-core
Finely stranded with wire end
ferrule
AWG
6 to 25 mm
2
4 to 16 mm
2
10 to 4
S2 From above Single- or multi-core
Finely stranded with wire end
ferrule
AWG
2.5 to 50 mm
2
1.5 to 35 mm
2
14 to 0
Table 2-18: Conductor cross sections of the 3 phase feeder lugs