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3RV1 circuit breakers
SIRIUS System Manual
2-42
GWA 4NEB 430 0999-02b
Combination of
frame sizes S00
and S0
Circuit breakers in frame sizes S00 and S0 vary in height and depth and
therefore
cannot
be combined on one busbar. You can combine two busbars
for circuit breakers in frame sizes S0 and S00 using an extension piece.
Extending the
bus
It is possible to extend the busbars by clamping the connecting lugs of a fur-
ther bus (turned 180°) under the terminals of the last circuit breaker (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:
• Feed-in terminal from above (3RV1915-5A for S00, 3RV1925-5AB for S0,
3RV1935-5A for S2)
• Feed-in terminal from below (3RV1915-5B for S00, S0)
• Connector
A connector links two 3-phase busbars over a space of 45 mm for circuit
breakers in frame sizes S00 and S0.
• Protective cap for connecting lugs (3RV19 15-6AB)
Protective caps provide shock protection for spare slots. To extend the
bus, remove the protective caps.
• Spacer
Feed-in terminal
3-phase feed-in terminals make it possible to have greater conductor cross-
sections than on the circuit breaker itself.
Tightening torque: 2 to 4 Nm (17.6 to 35.2 LB.IN).
Feed-in terminal - con-
nection from below
Attention
The feed-in terminal with connection from below is clamped on
instead
of a
circuit breaker. Make sure you check how much space you require when you
order the 3-phase busbars.
Frame size of
the circuit
breaker
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 2-19: Conductor cross-section of the 3-phase feed-in terminals
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