44
Motor Contactor
J7KN
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
150
170
-
-
-
60V A
85
110
-
-
-
110V A
2
2,5
-
-
-
220V A
0,5
0,5
-
-
-
3 poles in series 24V A
150
170
-
-
-
60V A
100
110
-
-
-
110V A
100
110
-
-
-
220V A
7
8
-
-
-
Maximum ambient temperature
Operation
open °C
-40 to +60 (+90)
*6
-25 to +55 (+70)
*7
enclosed °C
-40 to +40
-25 to +40
with thermal overload relay
open °C
-25 to +60
-25 to +55
enclosed
°C
-25 to +40
-25 to +40
Storage
°C
-50 to +90
-55 to +80
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
250
250
250
315
400
Coordination-type “2” according to IEC 947-4-1
Light contact welding accepted
max. fuse size
gL (gG) A
160
200
200
250
315
Contact welding not accepted
max. fuse size
gL (gG) A
100
125
160
200
250
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 10 - 70
*8
10 - 70
*8
95
120
185
flexible mm² 6 - 50
*8
16 - 50
*8
screw
screw
screw
flexible with multicore cable end mm² 10 - 35
10 - 35
M8
M8
M8
Cables per clamp
solid or stranded mm²
flexible mm²
Cables per clamp
main connector
solid AWG 10
10
flexible AWG 6 - 0
6 - 0
Cables per clamp
1
1
solid AWG
flexible AWG
Cables per clamp
Frequency of operations z
Contactors without thermal overload relay
without load 1/h
3000
3000
1200
1200
1200
AC3, I
e
1/h
300
300
-
-
-
AC4, I
e
1/h
120
120
-
-
-
DC3, I
e
1/h
300
300
-
-
-
Mechanical life
AC operated
S x 10
6
5
5
10
10
8
DC operated
S x 10
6
5
5
10
10
8
Short time current
10s-current A
680
880
1200
1400
1800
Power loss
per pole
at I
e
/AC3 400V W
4,3
6,0
8
11
8
Resistance to shock acc. to IEC 68-2-27
Shock time 20ms sine-wave
NO g
7
7
-
-
-
NC g
5
5
-
-
-
*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
*7
With reduced control voltage range 1,0 x U
s
and with reduced rated current I
e
/AC1 according to I
e
/AC3
*8
Maximum cable cross-section with prepared conductor
Main Contacts
Type J7KN-85
J7KN-110
J7KN-151
J7KN-176
J7KN-200
