Siemens 3VA1 100 A Manual page 115

ETU350 parameters:
With 4-pole versions only:
1)
Overload protection L:
•
•
The ETU350 LSI has a permanently active thermal image.
Short-time delayed short circuit protection S:
•
•
The curve shape is I
Instantaneous short-circuit protection I:
•
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 x I
sd
t adjustable in 6 steps of 0 to 0.4 s
sd
with the reference point at I
t = constant.
2
I Not adjustable: Permanently set to 9 / 10 / 11 / 12 x I
i
(depending on rated operational current and breaker size)
I I < 100 A: 1.0 x I
N n
I ≥ 100 A: 0.5 / 1.0 x I
n
n
r
r
= 8 x I
sd r
or OFF
r
or OFF
r
Applications
n
115