Switch disconnectorsSwitch disconnectors
Technical specifications
General technical details
Some values do not apply to 3KF with rear flat terminals – you will find further information in the Equipment Manual 3KF Switch Disconnectors with Fuses.
Standards |
IEC 60947-1, IEC 60947-3, VCE 0660 Part 107 |
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Size |
1 |
2 |
3 |
4 |
5 |
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Rated uninterrupted current Iu |
A |
32 |
63 |
80 |
125 |
160 |
250 |
400 |
630 |
800 |
Conventional free-air thermal current Ith1) |
A |
32 |
63 |
80 |
125 |
160 |
250 |
400 |
630 |
800 |
For fuse links acc. to IEC 60269-2 |
00 and 000 |
1 and 0 |
2 and 1 |
3 and 2 |
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Rated operational voltage Ue |
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|
V |
690 |
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|
V |
440 |
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|
V |
220 |
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Rated insulation voltage Ui |
V |
1000 |
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Rated impulse withstand voltage Uimp |
kV |
12 |
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Overvoltage category |
IV |
1) Max. permissible operating temperature at connections 125 °C
Operating and short-circuit behavior
Standards |
IEC 60947-1, IEC 60947-3, VCE 0660 Part 107 |
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Size |
1 |
2 |
3 |
4 |
5 |
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Rated operational current Ie1) |
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|
A |
32 |
63 |
80 |
125 |
160 |
250 |
400 |
630 |
800 |
|
A |
32 |
63 |
80 |
125 |
160 |
250 |
400 |
630 |
800 |
Motor switching capacity AC-23A 2) |
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|
kW |
15 |
30 |
37 |
55 |
90 |
132 |
220 |
355 |
400 |
|
kW |
18.5 |
37 |
55 |
75 |
110 |
160 |
280 |
400 |
560 |
|
kW |
30 |
55 |
75 |
110 |
132 |
250 |
400 |
630 |
800 |
Rated short-time withstand current Icw |
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(with t = 1 s, rms value, 690 V AC/440 V DC) |
kA |
2.5 |
5 |
8 |
12 |
22 |
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Rated short-circuit making capacity Icm |
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(At 690 V AC/440 V DC) |
kA |
3.5 |
7.65 |
13.6 |
24 |
44 |
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Rated conditional short-circuit current with fuse3) |
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|
kA |
100 |
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|
kA |
100 |
80 |
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Let-through current Ic combined with fuse3) |
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|
kA |
10.4 |
18.2 |
28.7 |
39.4 |
58.5 |
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|
kA |
11.2 |
16.87 |
30.31 |
41.14 |
49.95 |
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Let-through I2t value combined with fuse3) |
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|
kA2s |
33.2 |
150.6 |
437.0 |
1205 |
4100 |
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|
kA2s |
40.7 |
89.64 |
490.1 |
1300 |
2050 |
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Let-through current Ic of usable fuses, max. |
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|
kA |
11.8 |
18 |
33.7 |
37.1 |
77.4 |
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|
kA |
11.5 |
25.5 |
37.7 |
47 |
65 |
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Let-through I2t value of usable fuses, max. |
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|
kA2s |
34 |
223 |
1500 |
2150 |
10400 |
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|
kA2s |
55 |
360 |
940 |
2600 |
7000 |
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Power loss per pole with thermal current Ith (plus fuses) |
W |
0.4 |
1.7 |
2.8 |
4.2 |
7.2 |
15 |
26 |
40 |
50 |
Maximum power loss of the usable fuses (per fuse) |
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|
W |
6.5 |
7.5 |
8.5 |
11 |
12 |
25.5 |
34 |
48 |
60 |
|
W |
7 |
8 |
12 |
20 |
26 |
36 |
55 |
68 |
85 |
Service life, operating cycles |
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|
15000 |
12000 |
10000 |
8000 |
6000 |
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|
6000 |
5000 |
4000 |
2000 |
1000 |
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|
10000 |
8000 |
5000 |
3000 |
1500 |
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|
1500 |
1000 |
500 |
1) Values valid even at +10% line voltage tolerance in case of AC
2) Values are provided as a guide only and may vary depending on the make of motor
3) Valid for combination of 3KF and fuse type 3NA/3ND, characteristic gG/aM
Degree of protection (operator side)
Standards |
IEC 60947-1, IEC 60947-3, VCE 0660 Part 107 |
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---|---|---|---|---|---|
Size |
1 |
2 |
3 |
4 |
5 |
Degree of protection for 3KF LV HRC |
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|
IP20 |
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|
IP20 |
IP00 |
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Degree of protection for 3KF SITOR |
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|
IP00 |
Ambient conditions
Standards |
IEC 60947-1, IEC 60947-3, VCE 0660 Part 107 |
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---|---|---|---|---|---|---|
Size |
1 |
2 |
3 |
4 |
5 |
|
|
°C |
-25 ... +70 |
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|
°C |
-50 … +80 |
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|
Any |
Main conductor connection
Standards |
IEC 60947-1, IEC 60947-3, VCE 0660 Part 107 |
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---|---|---|---|---|---|---|
Size |
1 |
2 |
3 |
4 |
5 |
|
Conductor cross-section, max. |
mm2 |
25 |
95 |
240 |
2 x 150 |
2 x 300 |
Busbar systems, max. dimensions (number x width x thickness) |
mm |
1 x 9 x 2 |
1 x 20 x 3 |
1 x 25 x 3 |
1 x 30 x 10 |
1 x 50 x 10 |
Tightening torque |
Nm |
5 ... 6.5 |
15 ... 22 |
30 ... 44 |
30 ... 44 |
50 ... 75 |