Main Technical Parameters - CHINT NXR-12 User Instruction

1
Use Purpose
NXR-12~100 thermal overload relay (hereinafter referred to as thermal
relay) is applicable to circuits with frequency of AC 50Hz or 60Hz, rated
operating voltage up to 690V and current from 0.1A to 100A. It is used for
overload protection and phase-failure protection of 3-phase AC motor.
2

Main Technical Parameters

Ambient temp. (℃)
Hot and humid
atmospheric conditions
Altitude
Pollution class/installation category
Model
Phase-failure protection
Manual and automatic reset
Temperature compensation
Tripping indication
Test button
Stop button
Setting current range (A)
Table 1 Environmental conditions and
technical parameter of main circuit
Environment conditions
Table 2 Technical parameters
Normal operating temperature: -5℃~+40℃
(extreme operating temperature: -35℃~
+70℃), average temperature should not
exceed +35℃ within 24h
Relative humidity should not exceed 50% at
+40℃; up to 90% at +20℃
No influence below 2000m
Class 3/Ⅲ
NXR-12 NXR-25
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
0.1-12 0.1-25
01
NXR-38 NXR-100
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
23-38 23-100