Siemens 3KA571 Brochure - Page 13

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Siemens 3KA571 Brochure
Standards
Type
Mechanical endurance
Required operating torque
Degree of protection
Power loss of the switch at I
th
Main conductor connection
Busbar systems, max. dimensions (w × t)
Cable lug, max. conductor cross-section (stranded)
Tightening torque
Terminal screws
PE/ground-conductor connection
Flat bars
Cable lug, max. conductor cross-section (stranded)
4th pole
Rated uninterrupted current I
u
Rated operating current I
at AC-21A, AC 690 V
e
Main conductor connection
Flat bars
Cable lug max. conductor cross-section (stranded)
Auxiliary switch 1 NO + 1 NC (accessory)
Max. number to be plugged
Rated operating current I
at AC 50 Hz/60 Hz
e
/AC-12
I
e
/AC-15 at U
= 220 V/230 V
I
e
e
I
/AC-15 at U
= 380 V/400 V
e
e
I
/AC-15 at U
= 500 V
e
e
I
/AC-15 at U
= 690 V
e
e
Rated operating current I
at DC
e
I
/DC-13 at U
= 24 V
e
e
I
/DC-13 atU
= 48 V
e
e
I
/DC-13 at U
= 110 V
e
e
I
/DC-13 at U
= 220 V
e
e
I
/DC-13 at U
= 440 V
e
e
Connection
solid
flexible with end sleeve
Weight
Complete version
Basic version
1) Technical specifications for CSA approval on request.
SENTRIC Switch Disconnectors
SENTRIC K Switch Disconnectors from 63 A to 1000 A
IEC 60947-1, IEC 60947-3, VDE 0660 Part 107
3KA50
3KA51
operations
15000
15000
Nm
3
3
IP00/IP20 (from operator side, with busbar and terminal covers)
W
7
12
mm × mm
25 × 9
25 × 9
2
mm
35
35
Nm
6 ... 7.5
6 ... 7.5
M 6
M 6
mm × mm
–
–
2
mm
–
–
A
–
–
A
–
–
mm × mm
–
–
2
mm
–
–
1
1
A
10
A
6
A
4
A
2.5
A
21.2
A
10
A
4
A
1.2
A
0.4
A
0.2
2
mm
2 × (1 ... 2.5)
2
mm
2 × (0.5 ... 1.5)
kg
1.324
1.322
kg
1.040
1.039
1)
3KA52
3KA53
3KA55
15000
15000
12000
7.5
7.5
16
22
22
33
45 × 10
45 × 10
40 × 12
70
120
150
7 ... 10
18 ... 22
35 ... 45
M 6
M 8
M 10
–
–
20 × 2.5
–
–
70
–
125
400
–
125
400
–
15 × 3
25 × 4
–
70
240
2
2
2
2.560
2.560
5.400
2.200
2.200
Siemens LV 10 · 2004
General data
1)
3KA57
3KA58
12000
12000
16
16
72
170
40 × 12
40 × 15
2 × 150
2 × 240
or
1 × 240
35 ... 45
35 ... 45
M 10
M 10
20 × 2.5
20 × 2.5
120
120
400
400
400
400
25 × 4
25 × 4
240
240
7
2
2
6.401
5.360
5.963
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