Siemens SENTRON 3VL series - Page 146

Technical data
11.4 Derating factors
3VL IEC molded case circuit breakers
146 System Manual, 11/2013, 110 0110 - 02 DS 03
Plug-in or withdrawable version:
Table 11- 19 Derating factors for thermal-magnetic overcurrent release + RCD module (plug-in or
withdrawable version)
Molded
case circuit
breaker
Release
Thermal-magnetic TM
Coefficient
at
From [A]
To [A]
40 °C
50 °C
60 °C
70 °C
VL160X
16
40
1
1
1
1
VL160 &
VL160X
50
100
1
0,97
0,97
0,97
125
160
1
0,88
0,88
0,88
VL250
200
250
1
0,85
0,85
0,85
VL400
200
250
1
0,97
0,97
0,97
315
400
1
0,85
0,85
0,85
Electronic trip unit
Fixed mounting:
Table 11- 20 Derating factors for electronic trip unit (fixed mounting)
Molded
case
circuit
breaker
I
n
At 50 °C
[A]
Cross-
section Cu
[mm
2
] min.
Cross-
section Al
[mm
2
] min.
Max. rated uninterrupted current according to the
ambient temperature x I
n
40 °C
50 °C
60 °C
70 °C
VL160
63
16
25
1
1
1
0,8
100
35
50
1
1
1
0,8
160
70
95
1
1
1
0,8
VL250
200
95
120
1
1
1
0,8
250
120
185
1
1
0,95
0,8
VL400
315
185
2x120
1
1
1
0,8
400
240
2x150
1
1
0,95
0,8
VL630
630
2x185
2x240
1
1
0,95
0,8
VL800
800
500
--
1
1
0,95
0,8
VL1250 1000 600 -- 1 1 1 0,8
1250
800
--
1
1
0,95
0,8
VL1600
1600
1000
--
1
1
0,95
0,8
Note
The electronic trip units with order No. supplement (9th and 10th position) Sx, Mx, Lx, Tx, Nx
and Ux have a thermal self
-protection feature that trips the breaker if the electronics
components reach 100
°C.