01
Use Purpose
1
NRE8 electronic overload relay (hereinafter referred to as relay) is
applicable to circuits with frequency of AC 50Hz or 60Hz, rated operating
voltage up to 690V and current from 0.6 to 100A. It is used for overload
protection and phase-failure protection of long-term operating or
intermittent operating AC motor.
Key Technical Parameters
2
Table 1 Environmental conditions and
technical parameters of main circuit
Environmental conditions
Ambient temp. (℃)
Hot and humid
atmospheric conditions
-
5℃~+40℃, average temperature should not
35℃ within 24h
Relative humidity should not exceed 50% at
+40℃; up to 90% at +20℃;
Pollution class/installation category
Altitude
No influence below 2000m
Class 3/
Ⅲ
Technical parameters of main circuit
No.
1
2
3
4
5
6
7
8
Model
Frame size
rated
current A
Rated
current
A
Adjustment
range of setting
current A
Fuse
gG Amax
1.2
2.4
4
8
10
12
20
25
0.6~1.2
1.2~2.4
2~4
4~8
5~10
7~12
10~20
20~25
4
6
10
16
20
25
40
50
NRE8-25
25
