Datasheet

4 Micro Motor Contactor/Contactor Relay J7KNU
■ Engineering data and characteristics
Data according to IEC 60947-4-1, EN 60947-4-1, VDE 0660
Main Contacts Type J7KNU-05… J7KNU-05R J7KNU-AR…
Rated insulation voltage U
i
V AC 440 440
*1
Making capacity I
eff
at U
e
= 440 V AC A 65 –
Breaking capacity I
eff
cos  = 0,65
400 V AC A 50 –
Utilization category AC1
Switching of resistive load
Rated operational current I
e
(=I
th
) at 40°C, open A 12 5
Rated operational power of three-phase resistive loads
50-60Hz, cos = 1
230 V kW 4.7 1.9
240 V kW 4.8 2
400 V kW 8.3 3.3
415 V kW 8.6 3.5
Rated operational current I
e
(=I
the
) at 60°C, enclosed A 83
Rated operational power of three-phase resistive loads
50-60Hz, cos = 1
230 V kW 3.1 1.1
240 V kW 3.3 1.2
400 V kW 5.5 2
415 V kW 5.7 2.1
Minimum cross-section of conductor
at load with I
e
(=I
th
)
mm²
1.5 1.5
Utilization category AC2 and AC3
Switching of three-phase motors
Rated operational current I
e
open and enclosed
220 V A
6.2 –
230 V A 6.2 –
240 V A 5.6 –
380-400 V A 5–
415-440 V A 5–
Rated operational power of three-phase motors
50-60Hz
220-240 V kW 1.5 –
380-440 V kW 2.2 –
Utilization category AC4
Switching of squirrel cage motors, inching
Rated operational current I
e
open and enclosed
220 V A
4.9 –
230 V A 4.9 –
240 V A 4.1 –
380-400 V A 3.5 –
415-440 V A 3.5 –
Rated operational power of three-phase motors
50-60Hz
220-240 V kW 1.1 –
380-440 V kW 1.5 –
Utilization category DC1
Switching of resistive load
Time constant L/R  1ms
Rated operational current l
e
1 pole 24 V A 12 5
60 V
A
12 5
110 V
A
––
220 V
A
––
3 poles in series
24 V A 12 5
60 V A
12 5
110 V A
12 5
220 V A
––