Main Technical Parameters - CHINT NS2-80B User Instruction

1
The Purpose of Use
NS2-80B AC motor starter is applicable to circuits with frequency of AC
50Hz or 60Hz, rated operating voltage up to 415V and current up to 80A. It
is used for infrequent start control of 3-phase squirrel cage asynchronous
motor and it can protect motor from short circuit, overload and loss of
phase. The product can also be used for distribution line protection and
infrequent load transfer or used as isolator.
NS2-80B AC motor starter can be added with a set of side mounted
auxiliary contacts: AU11(1NO+1NC) or AU20(2NO). See product catalog or
product itself for technical parameters of auxiliary contacts.
2

Main Technical Parameters

Ambient temp. (℃)
Hot and humid
atmospheric conditions
Altitude
Pollution class/installation category
Frame
Release
size
rated
rated
No
current
current
I
nm
A
1 25
2 40
80
3 63
4 80
Table 1 Main technical parameters
Environmental conditions
Main technical parameters
Adjustment
range of
thermal
element
I setting
n
A current
A
16-25
25-40
40-63
56-80
-5℃ ~+ 40℃, 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
Rated ultimate short
Release
circuit breaking capacity
setting
I , Rated operating
current cu
short circuit breaking
value for
capacity I
short
circuit
400/415V
current
I A I
r cu
350 15
560 15
882 15
1120 15
01
Arcing
distance
kA
cs
mm
I
cs
7.5
7.5
50
7.5
7.5