Siemens SENTRON 3VL System Manual page 164

Technical data
12.5 Derating factors
Electronic trip unit
Fixed mounting:
Table 12- 25 Derating factors for electronic trip unit (fixed mounting)
Circuit
breaker
VL160
VL250
VL400
VL630
VL800
VL1250
VL1600
Note
The electronic trip units with the ordering data Sx, Mx, Tx and Nx have a thermal self-
protection feature that trips the breaker if the electronics components reach 100°C.
164
I Cross-
n
section Al
section Cu
At 50 °C
[mm ]min [mm
2
[A]
63 16
100 35
160 70
200 95
250 120
315 185
400 240
630 2x185
800 2x50x5
1000 2x60x5
1250 2x80x5
1600 2x100x5
Cross- Max. rated uninterrupted current according to the
ambient temperature x I
]min
2
40 °C
25 1
50 1
95 1
120 1
185 1
2x120 1
2x150 1
2x240 1
1
1
1
1
System Manual, 03/2009, 110 0110 - 02 DS 01
n
50 °C 60 °C
1 1
1 1
1 1
1 1
1 0,95
1 1
1 0,95
1 0,95
1 0,95
1 1
1 0,95
1 0,95
3VL molded-case circuit breakers
70 °C
0,80
0,80
0,80
0,80
0,80
0,80
0,80
0,80
0,80
0,80
0,80
0,80