List of abbreviations
C
C.1 Table of abbreviations
Overview
Table C-1 Meaning of abbreviations used in this document
Abbreviation Meaning
AC AC voltage
ACB Air circuit breaker
ACT Actuator module
AUX Auxiliary switch
CC Closing coil
DC Direct voltage
DIN Deutsches Institut für Normierung e.V. (German Institute for Standardization)
DISCON DISCONNECT
ESD Electrostatic sensitive devices
EMC Electromagnetic compatibility
EN European Standard
ETU Electronic trip unit
G Ground fault (ground-fault protection GF)
GF Ground fault (protection)
I Instantaneous (instantaneous short-circuit protection INST)
I/O Input / Output
IEC International Electrotechnical Commission
INST Instantaneous (short-circuit protection)
IP International Protection
L Long time delay (overload protection LT), overload release
LT
[tripping characteris‐
tic]
Partial overload range of the characteristic curve of a switching device
MF Metering function
MO Motor operator (spring charging motor)
MOC Mechanical Operating Counter (mechanical operating cycles counter)
N Neutral conductor, neutral protection
LV Low voltage
LV fuse Low-voltage fuse
PSS Position signaling switch
Rc CT Summation current transformer
RCD Residual Current Device
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03 267
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