Switch disconnectorsSwitch disconnectors
3KD, 6-pole for DC applications up to 1200 V, sizes 3 to 5
General technical details
Standards |
IEC 60947-1, IEC 60947-3 |
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---|---|---|---|---|---|---|---|---|---|---|---|
Type |
3KD36 |
3KD38 |
3KD40 |
3KD42 |
3KD44 |
3KD46 |
3KD48 |
3KD50 |
3KD52 |
3KD54 |
|
Size |
3 |
3 |
3 |
3 |
4 |
4 |
4 |
5 |
5 |
5 |
|
Rated uninterrupted current (IU) |
A |
200 |
250 |
315 |
400 |
500 |
630 |
800 |
1000 |
1250 |
1600 |
Conventional free-air thermal current Ith1) |
A |
200 |
250 |
315 |
400 |
500 |
630 |
800 |
1000 |
1250 |
1600 |
Rated operational voltage (Ue) |
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|
V |
1200 |
1200 |
1200 |
1200 |
1200 |
1200 |
1200 |
1200 |
1200 |
1200 |
|
V |
1200 |
1200 |
1200 |
1200 |
1000 |
1000 |
1000 |
1200 |
1200 |
1200 |
Rated insulation voltage (Ui) |
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|
V |
1250 |
1250 |
1250 |
1250 |
1250 |
1250 |
1250 |
1250 |
1250 |
1250 |
|
V |
1250 |
1250 |
1250 |
1250 |
1000 |
1000 |
1000 |
1250 |
1250 |
1250 |
Rated impulse withstand voltage (Uimp) |
kV |
12 |
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Overvoltage category |
IV |
1) Configuring note: Max. permissible operating temperature at connections 110 °C
Operating and short-circuit behavior
Standards |
IEC 60947-1, IEC 60947-3 |
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---|---|---|---|---|---|---|---|---|---|---|---|
Type |
3KD36 |
3KD38 |
3KD40 |
3KD42 |
3KD44 |
3KD46 |
3KD48 |
3KD50 |
3KD52 |
3KD54 |
|
Rated operational current Ie 1) |
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|
A |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
|
A |
200 |
250 |
315 |
400 |
500 |
630 |
800 |
1000 |
1250 |
1600 |
Short-time withstand current Icw |
kA |
10 |
10 |
10 |
10 |
20 |
20 |
20 |
20 |
20 |
20 |
Short-circuit making capacity (Icm) |
kA |
14.2 |
14.2 |
14.2 |
14.2 |
28.4 |
28.4 |
28.4 |
28.4 |
28.4 |
28.4 |
Power loss per pole with thermal current Ith |
W |
4 |
6 |
10 |
14 |
12 |
17 |
25 |
20 |
32 |
57 |
Service life, operating cycles |
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Mechanical |
10000 |
10000 |
10000 |
10000 |
8000 |
8000 |
8000 |
6000 |
6000 |
6000 |
|
Electrical, at DC-21A, 1200 V |
200 |
200 |
200 |
200 |
100 |
100 |
100 |
100 |
100 |
100 |
1) For sizes 3 and 4, phase barriers or contact connection covers (accessories) are required when connecting cable lugs.
Main conductor connection
Standards |
IEC 60947-1, IEC 60947-3 |
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---|---|---|---|---|---|---|---|---|---|---|---|
Type |
3KD36 |
3KD38 |
3KD40 |
3KD42 |
3KD44 |
3KD46 |
3KD48 |
3KD50 |
3KD52 |
3KD54 |
|
Conductor cross-section, max. |
mm2 |
240 |
2 x 240 |
2 x 240 |
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Busbar systems, max. dimensions (number x width x thickness) |
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|
mm |
1 x 30 x 10 |
2 x 40 x 5 |
2 x 60 x 10 |
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|
mm |
-- |
-- |
-- |
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Tightening torque |
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|
Nm |
30 ... 44 |
50 ... 75 |
50 ... 75 |
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|
Nm |
-- |
-- |
-- |
Other properties
Standards |
IEC 60947-1, IEC 60947-3 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Type |
3KD36 |
3KD38 |
3KD40 |
3KD42 |
3KD44 |
3KD46 |
3KD48 |
3KD50 |
3KD52 |
3KD54 |
|
Degree of protection |
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|
IP20 |
IP20 |
IP20 |
IP20 |
IP20 |
IP20 |
IP20 |
IP20 |
IP20 |
IP20 |
|
|
IP00 |
IP00 |
IP00 |
IP00 |
IP00 |
IP00 |
IP00 |
IP00 |
IP00 |
IP00 |
|
Ambient conditions |
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|
°C |
-25 ... +70 (no derating of Ith at -5 to +40 °C) |
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|
°C |
-50 ... +80 |
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|
Any |