01
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
Main technical parameters
The Purpose of Use
1
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.
Main Technical Parameters
2
Table 1 Main technical parameters
No
Frame
size
rated
current
I
nm
A
Release
rated
current
I
n
A
Adjustment
range of
thermal
element
setting
current
A
Release
setting
current
value for
short
circuit
current
I
r
A
Rated ultimate short
circuit breaking capacity
I
cu
, Rated operating
short circuit breaking
capacity I
cs
kA
Arcing
distance
mm
400/415V
1
2
3
4
80
50
25
40
63
80
16-25
25-40
40-63
56-80
350
560
882
1120
I
cu
15
15
15
15
I
cs
7.5
7.5
7.5
7.5
