Switch disconnectorsSwitch disconnectors
3KD, 3/4-pole, sizes 1 and 2
General technical details
Standards |
IEC 60947-1, IEC 60947-3 |
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Type |
3KD16 |
3KD22 |
3KD26 |
3KD28 |
3KD30 |
3KD32 |
3KD34 |
3KD36..-.N |
|
Size |
1 |
1 |
1 |
2 |
2 |
2 |
2 |
2 |
|
Rated uninterrupted current (IU) |
A |
16 |
32 |
63 |
80 |
100 |
125 |
160 |
200 |
Conventional free-air thermal current Ith 1) |
A |
16 |
32 |
63 |
80 |
100 |
125 |
160 |
200 |
Rated operational voltage (Ue) |
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|
V |
690 |
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|
V |
220 |
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|
V |
440 |
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Rated insulation voltage (Ui) |
V |
1000 |
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Rated impulse withstand voltage (Uimp) |
kV |
8 |
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Overvoltage category with pollution degree 3 |
III |
1) Configuring note: Max. permissible operating temperature at connections 125 °C
Operating and short-circuit behavior
Standards |
IEC 60947-1, IEC 60947-3 |
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---|---|---|---|---|---|---|---|---|---|
Type |
3KD16 |
3KD22 |
3KD26 |
3KD28 |
3KD30 |
3KD32 |
3KD34 |
3KD36..-.N |
|
Rated operational current Ie |
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|
A |
16 |
32 |
63 |
80 |
100 |
125 |
160 |
200 |
|
A |
16 |
32 |
63 |
80 |
100 |
125 |
160 |
160 |
|
A |
16 |
32 |
63 |
80 |
100 |
125 |
160 |
160 |
|
A |
16 |
32 |
63 |
80 |
100 |
125 |
125 |
125 |
|
A |
16 |
32 |
63 |
80 |
100 |
125 |
160 |
160 |
|
A |
16 |
32 |
63 |
80 |
100 |
125 |
160 |
160 |
|
A |
16 |
32 |
63 |
80 |
100 |
125 |
160 |
160 |
Motor switching capacity AC-23A1) |
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|
kW |
7.5 |
15 |
30 |
45 |
55 |
55 |
90 |
90 |
|
kW |
7.5 |
18.5 |
37 |
55 |
55 |
75 |
110 |
110 |
|
kW |
11 |
30 |
55 |
75 |
90 |
110 |
110 |
110 |
Short-time withstand current Icw |
kA |
3 |
3 |
3 |
4 |
4 |
4 |
4 |
4 |
Short-circuit making capacity (Icm) |
kA |
7 |
7 |
7 |
12 |
12 |
12 |
12 |
12 |
Rated current of upstream fuse 2)3) |
A |
63 |
63 |
63 |
160 |
160 |
160 |
160 |
200 |
Rated conditional short-circuit current with upstream fuses 2) |
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|
kA |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
50 |
|
kA |
100 |
100 |
100 |
65 |
65 |
65 |
65 |
50 |
Let-through current combined with upstream fuse 2) |
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|
kA |
7 |
7 |
7 |
17.9 |
17.9 |
17.9 |
17.9 |
18 |
|
kA |
7.5 |
7.5 |
7.5 |
18.7 |
18.7 |
18.7 |
18.7 |
19 |
Let-through I2t value combined with upstream fuse 2) |
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|
kA2s |
13.3 |
13.3 |
13.3 |
135.6 |
135.6 |
135.6 |
135.6 |
211 |
|
kA2s |
13.7 |
13.7 |
13.7 |
178.3 |
178.3 |
178.3 |
178.3 |
226 |
Power loss per pole with thermal current Ith |
W |
0.1 |
0.4 |
1 |
1.1 |
1.8 |
3.2 |
4.6 |
6.4 |
Service life, operating cycles |
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Mechanical |
15000 |
15000 |
15000 |
15000 |
15000 |
15000 |
15000 |
15000 |
|
Electrical, at AC-23 A, 690 V/50 ... 60 Hz |
6000 |
6000 |
6000 |
1500 |
1500 |
1500 |
1500 |
1500 |
|
Electrical, at DC-23 A, 220/440 V |
1500 |
1500 |
1500 |
1500 |
1500 |
1000 |
1000 |
1000 |
1) Values are provided as a guide only and may vary depending on the make of motor.
2) Valid for the combination of 3KD and fuse type 3NA38 for IU=16...160 A; 3NA31 for IU = 200 A, characteristic gG
3) Maximum rated current of the upstream fuse; a fuse with a lower rated current can also be used.
Main conductor connection
Standards |
IEC 60947-1, IEC 60947-3 |
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---|---|---|---|---|---|---|---|---|---|
Type |
3KD16 |
3KD22 |
3KD26 |
3KD28 |
3KD30 |
3KD32 |
3KD34 |
3KD36..-.N |
|
Conductor cross-section, max. |
mm2 |
35 |
35 |
35 |
70 (95) 1) |
70 (95) 1) |
70 (95) 1) |
70 (95) 1) |
95 |
Busbar systems, max. dimensions (number x width x thickness) |
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|
mm |
-- |
1 x 20 x 3 2) |
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|
mm |
1 x 9 x 2 |
1 x 14 x 3 |
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Tightening torque |
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|
Nm |
-- |
15 ... 22 |
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|
Nm |
5 ... 6.5 |
6.5 ... 8 |
1) 95 mm2 valid for versions with flat terminals
2) When using busbars that are 20 mm wide, these must be insulated
Other properties
Standards |
IEC 60947-1, IEC 60947-3 |
||||||||
---|---|---|---|---|---|---|---|---|---|
Type |
3KD16 |
3KD22 |
3KD26 |
3KD28 |
3KD30 |
3KD32 |
3KD34 |
3KD36..-.N |
|
Degree of protection |
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|
IP20 |
IP20 |
IP20 |
IP20 |
IP20 |
IP20 |
IP20 |
IP20 |
|
|
IP20 |
IP20 |
IP20 |
IP001) / IP20 |
IP00 |
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Ambient conditions |
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|
°C |
-25 ... +70 (no derating of Ith at -5 to +55 °C) |
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|
°C |
-50 ... +80 |
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|
Any |
1) Relevant only for devices with flat terminals
2) For mounting positions other than the vertical, please contact Technical Support.