21
04/06 AWB1210-1458D/GB
About this manual
This manual applies to the PKZM0 motor-protective circuit-
breakers.
It describes the overload monitoring system for the
protection of motors operating in potentially explosive
atmospheres (EEx e areas).
Target group
This manual addresses skilled personnel who install,
commission and service the motor-protective circuit-
breakers.
Abbreviations and
symbols
The abbreviations and symbols used in this manual have the
following meaning:
X
indicates actions to be taken.
EEx e
“Increased safety” degree of protection
PTB
P
hysikalisch
T
echnische
B
undesanstalt.
German Federal Testing Laboratory: Accredited
certification authority for devices operated in
EEx e areas.
NM
Lowest possible setup current
HM
Highest possible setup current
h
Draws your attention to interesting tips and
supplementary information
Note
warns of light damage to equipment.
Caution!
Warns of the possibility of a hazardous situation that
could result in major damage and minor injury.
Содержание PKZM0
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