Their sizing must
be carefully studied the switchgear designer.1 Examples positioning the connection busbars according the terminals
The connection busbars enable the connection between the terminals the circuit-breakers and the busbars the switchgear. The various types terminals
are constant dimensions for each size circuit-breaker: normally advisable exploit the whole contact surface the terminal, the width
of the connection busbars should the same that the terminal. 16
Positioning the first anchoring baffle the busbars according the short-circuit current
A rin itch gear
P E3-E4-E6
VERTICAL 250 150
Fig. some cases, reductions the width the connection relation that
of the terminal are allowable shown the following examples.1.
Vertical terminals
Circuit-breaker [A] Continuous current-
carrying capacity [A]
45°C 55°C
Busbar cross-section
[m 2]
E2B 800 s00 800 800 1x(60x10)
E2B 1000 1000 1000 1000 1x(80x10)
E2B 1250 1250 1250 1250 1x(80x10)
E2B/N 1600 1600 1600 1600 2x(60x10)
E3N 800 s00 800 800 1x(60x10)
E3N 1000 1000 1000 1000 1x(80x10)
E3N 1250 1250 1250 1250 1x(80x10)
E3N/H 1600 1600 1600 1600 2x(60x10)
E3N/H 2000 2000 2000 2000 3x(60x10)
E3N/H 2500 2500 2a00 2a00 (100x 10)
E4S 1600 1600 1600 1600 2x(60x10)
E4S 2000 2000 2000 2000 3x(60x10)
E4S 2500 2500 2a00 2a00 3x(60x10)
E4S/H 3200 3200 3200 3200 3x(100x10)
E6H 3200 3200 3200 3200 3x(100x10)
E6H 4000 4000 4000 4000 4x(100x10)
E6H 5000 5000 a000 4600 (100x 10)
Fig. Some examples possible constructions are given this paragraph.5.
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. 1y
Model y
A pparatus Emax DC
S cale
D oc-N 1SDH000635R0002
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