Description
2.6 Protection system
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02
79
N
Neutral conductor protection
1)
At rated operational currents I
n
≤ 63 A: I
N
= 40 % … 100 % I
n
2)
Applies to I
n
> 63 A
3)
Dependent on circuit breaker size and rated operational current
Parameters of the neutral conductor protection function
●
Tripping current I
N
:
Adjustable as a proportion of the current setting (I
r
) for overload protection
●
Tripping delay:
Corresponds to the delay setting (t
r
) for overload protection
●
Tripping current of the short-time delayed short-circuit protection:
Corresponds to the short-time delayed short-circuit protection (I
sd
)
●
Tripping delay:
Corresponds to the delay setting for short-time delayed short-circuit protection (t
sd
)
●
Instantaneous short-circuit protection:
Corresponds to the tripping current (I
i
) for instantaneous short-circuit protection
Summary of Contents for 3VA1 100 A
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