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A-4
Protection and measurements
Interchangeable control units
Overload protection
long time
Ir
(In x …)
Short-circuit protection
short time
Isd
(Ir x …)
instantaneous
Ii
(In x …)
Earth-fault protection
lg
(In x …)
Residual earth-leakage protection
I∆n
Zone selective interlocking
ZSI
Protection of the fourth pole
Current measurements
Power measurements
Advanced protection
Quick view
Remote communication by bus
Device-status indication
Device remote operation
Transmission of settings
Indication and identification of protection devices and alarms
Transmission of measured current values
Compact circuit breakers
Additional indication and control auxiliaries
Indication contacts
Voltage releases
MX shunt release/MN undervoltage release
Installation
Accessories
terminal extensions and spreaders
terminal shields and interphase barriers
escutcheons
Dimensions fixed devices, front connections (mm)
3P
H x W x D
4P
Weight fixed devices, front connections (kg)
3P
4P
Source changeover system (see section on "source changeover systems")
Manual, remote-operated and automatic source changeover
systems
(1)
Except 1600b-3200.
Compact circuit breakers
Protection of distribution
systems
Compact NS circuit breakers
from 630b up to 3200 A
Functions and characteristics