Siemens 3VA1 100 A Manual page 113

Molded case circuit breakers
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ETU330 parameters:
With 4-pole versions only:
1)
Overload protection L:
The ETU330 LIG has a permanently active thermal image.
Instantaneous short-circuit protection I:
Ground-fault protection G:
The ground-fault protection cannot be deactivated.
Neutral conductor protection N:
The neutral conductor protection function is available for 4-pole molded case circuit breakers
only.
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02
3.1 Line protection applications of 3VA molded case circuit breakers
I
adjustable in 10 steps of 0.4 to 1.0 x I
r
t
adjustable in 10 steps of 0.5 to 12 /15 s or 17 s
r
t
is the tripping time at 6 x I
r
I
adjustable in 10 steps of 1.5 to 9 / 10 / 11 / 12 x I
i
(depending on size)
I
adjustable in 5 steps of 0.2 / 0.25 / 0.4 / 0.6 to 1.0 x I
g
(depending on size)
t
adjustable to 100 ms or 300 ms, at 2 x I
g
I
I
< 100 A: 1.0 x I
N
n
I
≥ 100 A: 0.5 / 1.0 x I
n
n
r
g
or OFF
r
or OFF
r
n
n
in each case
Applications
113

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