Siemens Sentron 3VA Manual page 133

Neutral conductor protection N:
The neutral conductor protection function is available only for 3-pole molded case circuit
breakers with external current transformer for N conductor for 4-pole molded case circuit
breakers.
•
3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01
3.1 Use of the 3VA UL molded case circuit breakers in line protection
I Adjustable in steps of 1 A
N
3-pole circuit breakers with external current transformer for N conductor:
I = 40 A: 0.4 to 1.6 x I
n
I ≥ 100 A: 0.2 to 1.6 I
n
4-pole circuit breakers:
I = 40 A: 0.4 to 1.6 x I
n
I ≥ 100 A: 0.2 to 1.0 or 1.5 / 1.6 x I
n
n
n
n
n
Applications
131