Motor Contactor
J7KN
41
Utilization category DC3 and DC5
Switching of shunt motors and series motors
Time constant L/R 15ms
Rated operational current I
e
1 pole24V A
20
25
32
32
50
65
80
110
120
130
60V A
6
6
6
6
30
30
30
60
60
60
110V A
1,2
1,2
1,2
1,2
1,8
1,8
1,8
1,8
1,8
1,8
220V A
0,2
0,2
0,2
0,2
0,2
0,2
0,2
0,25
0,25
0,25
3 poles in series 24V A
20
25
32
32
50
65
80
110
120
130
60V A
20
25
32
32
40
40
40
80
80
80
110V A
20
20
20
20
40
40
40
80
80
80
220V A
2,5
2,5
2,5
2,5
4
4
4
5
5
5
Maximum ambient temperature
Operation
open °C
-40 to +60 (+90)
*6
enclosed °C
-40 to +40
with thermal overload relay
open °C
-25 to +60
enclosed
°C
-25 to +40
Storage
°C
-50 to +90
Short circuit protection
for contactors without thermal overload relay
Coordination-type "1" according to IEC 947-4-1
Contact welding without
hazard of persons
max. fuse size
gL (gG) A
63
63
63
63
80
80
80
160
160
160
Coordination-type “2” according to IEC 947-4-1
Light contact welding accepted
max. fuse size
gL (gG) A
25
35
35
35
50
50
50
100
125
125
Contact welding not accepted
max. fuse size
gL (gG) A
16
16
16
16
25
35
35
50
63
63
For contactors with thermal overload relay the device with
the smaller admissible backup fuse (contactor or thermal
overload relay) determines the fuse size.
Cable cross-sections
for contactors without thermal overload relay
main connector
solid or stranded mm² 0,75 - 6
1,5 - 25
4 - 50
flexible mm² 1 - 4
2,5 - 16
10 - 35
flexible with multicore cable end mm² 0,75 - 4
1,5 - 16
6 - 35
Cables per clamp
2
1
1
solid or stranded mm² 6+(1-6) / 4+(0,75-4)
16+(2,5-6) / 10+(4-10)
50+4 / 35+6 / 25+(6-16)
2,5+(0,75-2,5) / 1,5+(0,75-1,5)
6+(4-6) / 4+(2,5-4)
16+(6-16) / 10+(6-16)
flexible mm² 6+(1,5-6) / 4+(1-4)
16+(2,5-6) / 10+(4-10)
50+(4-10) / 35+(4-16)
2,5+(0,75-2,5) / 1,5+(0,75-1,5)
6+(4-6) / 4+(2,5-4)
25+(4-25) / 16+(4-16)
Cables per clamp
2
2
2
main connector
solid AWG 18 - 10
16 - 10
12 - 10
flexible AWG 18 - 10
14 - 4
10 - 0
Cables per clamp
2
1
1
solid AWG 10+(16-10) / 12+(18-12)
10+(16-10) / 12+(18-12)
10+(12-10) / 12+12
14+(18-14) / 16+(18-16)
14+(18-14) / 16+(18-16)
flexible AWG 10+(14-10) / 12+(18-12)
4+(18-12) / 6+(18-8)
1+(12-10) / 2+(8-12)
14+(18-14) / 16+(18-16)
8+(18-8) / 10+(18-12)
3+(12-8) / 4+(10-6)
Cables per clamp
2
2
2
Frequency of operations z
Contactors without thermal overload relay
without load 1/h
10000
10000
10000
10000
7000
7000
7000
7000
7000
7000
AC3, I
e
1/h 600
600
600
600
600
600
600
400
400
400
AC4, I
e
1/h 120
120
120
120
120
120
120
120
120
120
DC3, I
e
1/h 600
600
600
600
600
600
600
400
400
400
Mechanical life
AC operated
S x 10
6
10
10 10
10
10
10
10
10
10
10
DC operated
S x 10
6
10
10
10
10
10
10
10
10
10
10
DC solenoid operated
S x 10
6
50
50
50
50
50
50
50
-
-
-
Short time current
10s-current
A 96
120
144
176
184
240
296
360
504
592
Power loss
per pole
at I
e
/AC3 400V
W 0,21
0,35
0,5
0,75
0,7
1,3
2
2,2
3,9
5,5
Resistance to shock acc. to IEC 68-2-27
Shock time 20ms sine-wave
NO g
10
10
10
10
8
8
8
8
8
8
NC g
6
6
6
6
-
-
-
-
-
-
*1
Suitable at 690V for: earthed-neutral systems, overvoltage I to IV, pollution degree 3 (standard-industry): U
imp
= 8kV.
Data for other conditions on request.
*2
Metal halide lamps and sodium-vapour lamps (high- and low-pressure lamps)
*3
High-pressure lamps
*4
Blended lamps, containing a mercury high-pressure unit and a tungsten helix in a flourescent glass bulb (daylight lamps)
*5
Current inrush approx. 16 x I
e
*6
With reduced control voltage range 0,9 up to 1,0 x U
s
and with reduced rated current I
e
/AC1 according to I
e
/AC3
Main Contacts
Type
J7KN-10
J7KN-14
J7KN-18
J7KN-22
J7KN-24
J7KN-32
J7KN-40
J7KN-50
J7KN-62
J7KN-74
