Datasheet

3
Thermal (T- and TA-Line)
T9-611
https://www.schurter.com /PG17_18_19
Circuit Breakers
Typical internal resistance
Rated Current [A] Internal Resistance [mΩ]
3 65.0
4 21.6
5 23.6
6 16.3
7 15.3
8 12.9
10 7.3
12 7.0
14 4.8
15 4.3
16 3.9
Time-Current-Curves
Time in Seconds
2345
16
78 10
[min] [sec]
10'000
1'000
100
1
0.1
10
30
20
10
5
3
1
60
T9
5 A -16 A (TC-1)
4 A (TC-2)
1.05
1.35 1.45
Multiple of Rated Current In
Reference Temperature +23°
Time in Seconds
2345
16
78 10
[min] [sec]
10'000
1'000
100
1
0.1
10
30
20
10
5
3
1
60
T9
3 A (TC-2)
1.05
1.5
Multiple of Rated Current In
Reference Temperature +23°
Effect of ambient temperature
The units are calibrated for an ambient temperature of +23°C. To determine the rated cur-
rent for a lower or higher ambient temperature, use a correction factor (typical value) from
the table below:
Ambient temperature [°C] Correction factor
-5 0,85
+10 0,95
+23 1,00
+40 1,08
+60 1,21
Example: Rated current = 10 A; Environmental temperature = 60 °C; --> Correction factor
= 1.21; Resulting current = 12.1 A --> Fount to next higher rated current: 13 A