Technical data
12.5 Derating factors
3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01
161
Plug-in or withdrawable version:
Table 12- 22 Derating factors Thermomagnetic overcurrent trip units (plug-in or withdrawable version
Trip unit
Thermomagnetic TM
Coefficient
at
Circuit
breaker
From [A]
To [A]
40 °C
50 °C
60 °C
70 °C
VL160X
16
40
1
1
1
1
VL160 &
VL160X
50
125
100
160
1
1
1
0,9
1
0,9
1
0,9
VL250
200
250
1
0,9
0,9
0,9
VL400
200
315
250
400
1
1
1
0,9
1
0,9
1
0,9
VL630
315
500
400
630
1
1
1
0,85
1
0,85
1
0,85
Example for VL250:
●
I
n
= 200 A at 50 °C
●
Ambient temperature = 60 °C
I
n
= 200 x 0.93 = 186 A for fixed-mounted version
I
n
= 200 x 0,93 x 0.9 = 167 A for plug-in version
Summary of Contents for SENTRON 3VL series
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Page 10: ...Table of contents 3VL molded case circuit breakers 10 System Manual 03 2009 110 0110 02 DS 01 ...
Page 350: ...Correction sheet 3VL molded case circuit breakers 350 System Manual 03 2009 110 0110 02 DS 01 ...
Page 358: ...Glossary 3VL molded case circuit breakers 358 System Manual 03 2009 110 0110 02 DS 01 ...
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