Siemens SENTRON 3VL series, System Manual

Page: 121 / 360

3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01
121
Displays and operator controls
9
9.1 Overcurrent trip unit without LCD display
The different setting options of the individual overcurrent trip units without LCD display are
explained using the examples listed:
Magnetic overcurrent trip units M VL160-VL630
Characteristic
curve
Application View
Starter protection M, I function
Short-circuit protection, adjustable I
i
= 7 to
15 x I
n
,
for VL160 to VL630 (frame-size-dependent)
2
2 5 0 0
i
4 6
= 1 6 0 A
n
N S E 0 _ 0 1 5 4 0 a
1 2 5 0
C A T . A
i
~
I 6 D K
Thermomagnetic overcurrent trip units TM VL160X
Characteristic
curve
Application View
/
,
Line protection TM, LI/LIN function
Overload protection fixed,
short-circuit protection fixed
2 4 6
63A
OFF
CAT.A
50° C
TM
~
=
16(
/
,
Line protection TM, LI/LIN function
Overload protection adjustable I
R
= 0.8 to
1 x I
n
Short-circuit protection fixed
•
1.0 .8
R
•
n
x
63A
OFF
CAT.A
50° C
TM
~
=
2 4 6
NSE-00540