Protection System - Siemens 3VA1 100 A Manual

2.6

Protection system

This chapter contains an overview of the protection system of 3VA molded case circuit
breakers.
The topics discussed in this chapter are listed below:
● Description of functions
● Overload protection (L)
● Short-time delayed short-circuit protection (S)
● Instantaneous short-circuit protection (I)
● Ground-fault protection (G)
● Neutral conductor protection (N)
● ZSI - Zone Selective Interlocking
● Guide to setting the tripping characteristic
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02
Description
2.6 Protection system
69