Datasheet

Micro Motor Contactor/Contactor Relay J7KNU 5
Utilization category DC3 and DC5
Switching of shunt motors and series motors
Time constant L/R  15ms
Rated operational current l
e
1 pole 24 V A 12 –
60 V
A
––
110 V
A ––
220 V
A
––
3 poles in series
24 V A
12 –
60 V A
12 –
110 V A
12 –
220 V A ––
Maximum ambient temperature
Operation open °C
-40 to +60 (+90)
*2
enclosed °C -40 to +40
with thermal overlaod 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 60947-4-1
Contact welding without hazard of persons
max. fuse size
gL (gG) A 20 –
Coordination-type
" 2 " according to
IEC 60947-4-1
Light contact welding accepted
max. fuse size
gL (gG) A ––
Contact welding not accepted
max. fuse size
gL (gG) A ––
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
main connector
solid or stranded mm
2
0,5-1.5
flexible mm
2
0,5-1.5
flexible with multicore cable end mm
2
0,5-1.5
Cables per clamp
2
solid or stranded mm
2
20-14
Frequency of operations z
Contactors without thermal overload relay
10000
without load
1/h
AC3, l
e
1/h 600 –
AC4, l
e
1/h 120 –
DC3, l
e
1/h 600 –
Mechanical life
AC operated
S x 10
6
3
xxx
*3
DC operated S x 10
6
Short time current 10s-current A 50 –
Power loss per pole at I
e
/AC3 400V W 0.2 –
Resistance to shock acc. to IEC 68-2-27
Shock time 20 ms sine-wave NO g 2.5 2.5
NC g 2.5 2.5
*1
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.
*2
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.
*3
Data on request.
Main Contacts Type J7KNU-05… J7KNU-05R J7KNU-AR…