Allen-Bradley Bulletin 1694 - Time;Current Characteristic and Temperature Factor; Characteristic Curve Explanation; Temperature Factor Table

Typical time/current characteristic (T
amb
= +23 °C, UB = DC 24 V)
Temperature factor / continuous duty
Temperature factor table:
The time/current characteristic depends on the ambient temperature. In order to determine the max. load current,
please multiply the current rating with the temperature factor and consider the factor for side-by-side mounting.
I
SC
- short circuit current
Please note
- When mounted side-by-side, the devices can carry max. 80 % of their rated load or a different rating has to be selected.
- With high temperatures, the load current warning threshold “warn limit typically 0.9 x I
N
” will be reduced in accordance
with the temperature factor.
- Selection of current rating of the circuit protector ≤ rating of power supply.
1694-IN002D-EN-E - June 2020 (Version 03)Publication DIR 10005220601
User Manual: Bulletin 1694 Electronic circuit protection for 24V DC
5
ambient temperature [°C]
0
10
23
40
50
60
temperature factor
1
1
1
0.95
0.90
0.85
1000
100
trip time in seconds
times rated current
10
1
0.1
0.01
0.001
0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 I
SC