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