Switch disconnectorsSwitch disconnectors
3KD, 3/4-pole, sizes 3 to 5
General technical details
Standards |
IEC 60947-1, IEC 60947-3 |
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---|---|---|---|---|---|---|---|---|---|---|---|
Type |
3KD36..-.P |
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 Ith 1) |
A |
200 |
250 |
315 |
400 |
500 |
630 |
800 |
1000 |
1250 |
1600 |
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 |
12 |
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Overvoltage category with pollution degree 3 |
IV |
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 |
3KD36..-.P |
3KD38 |
3KD40 |
3KD42 |
3KD44 |
3KD46 |
3KD48 |
3KD50 |
3KD52 |
3KD54 |
|
Rated operating current Ie 1)2) |
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|
A |
200 |
250 |
315 |
400 |
500 |
630 |
800 |
1000 |
1250 |
1600 |
|
A |
200 |
250 |
315 |
400 |
500 |
630 |
800 |
1000 |
1250 |
1600 |
|
A |
200 |
250 |
315 |
350 |
500 |
630 |
800 |
1000 |
1250 |
1600 |
|
A |
200 |
250 |
315 |
315 |
500 |
630 |
800 |
1000 |
1250 |
1600 |
|
A |
200 |
250 |
315 |
400 |
500 |
630 |
800 |
1000 |
1250 |
1600 |
|
A |
200 |
250 |
315 |
400 |
500 |
630 |
800 |
-- |
-- |
-- |
|
A |
200 |
250 |
315 |
400 |
500 |
630 |
800 |
-- |
-- |
-- |
Motor switching capacity AC-23A3) |
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|
kW |
110 |
132 |
160 |
200 |
250 |
355 |
400 |
560 |
710 |
900 |
|
kW |
132 |
160 |
200 |
250 |
355 |
400 |
560 |
710 |
900 |
1000 |
|
kW |
185 |
220 |
315 |
315 |
500 |
630 |
800 |
1000 |
1000 |
1000 |
Short-time withstand current Icw |
kA |
13 |
13 |
13 |
13 |
30 |
30 |
30 |
50 |
50 |
50 |
Short-circuit making capacity (Icm) |
kA |
26 |
26 |
26 |
26 |
63 |
63 |
63 |
105 |
105 |
105 |
Rated current of upstream fuse 4)5) |
A |
250 |
250 |
400 |
400 |
630 |
630 |
800 |
1000 |
1250 |
1600 |
Rated conditional short-circuit current with upstream fuses4) |
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|
kA |
100 |
100 |
65 |
65 |
100 |
100 |
100 |
100 |
80 |
80 |
|
kA |
65 |
65 |
35 |
35 |
65 |
65 |
50 |
-- |
-- |
-- |
Let-through current combined with upstream fuse 4) |
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|
kA |
25.1 |
25.1 |
35.2 |
35.2 |
61.6 |
61.6 |
63.7 |
95.9 |
103.4 |
110 |
|
kA |
22.7 |
22.7 |
27.96 |
27.96 |
54.5 |
54.5 |
70.4 |
-- |
-- |
-- |
Let-through I2t combined with upstream fuse 4) |
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|
kA2s |
427 |
427 |
1165 |
1165 |
3687 |
3687 |
7471 |
15400 |
25960 |
30900 |
|
kA2s |
348 |
348 |
1157 |
1157 |
4450 |
4450 |
10300 |
-- |
-- |
-- |
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 AC-23 A, 690 V/50 ... 60 Hz |
1000 |
1000 |
1000 |
1000 |
1000 |
1000 |
500 |
500 |
500 |
500 |
|
Electrical, at DC-23 A, 220/440 V |
1000 |
1000 |
1000 |
1000 |
1000 |
1000 |
500 |
500 |
500 |
500 |
1) For size 3, phase barriers or contact connection covers (accessories) are required for busbar systems (AC-21A, AC-22A, and Ue>400 V, AC-23A) and when connecting cable lugs.
2) With size 4 at AC-23A, terminal covers must be installed (accessories).
3) Values are provided as a guide only and may vary depending on the make of motor.
4) Valid for the combination of 3KD and fuse type 3NA…, characteristic gG
5) 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 |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Type |
3KD36..-.P |
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 |
1 x 30 x 10 |
2 x 40 x 5 |
2 x 60 x 10 |
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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..-.P |
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 +55 °C) |
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|
°C |
-50 ... +80 |
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|
Any |
1) With mounting positions other than the vertical, please contact Technical Support.