Sentric switch disconnectors, General data – Siemens AC-21A User Manual
Page 4
Siemens LV 10 · 2004
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SENTRIC Switch Disconnectors
General data
SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A
7
■
Technical specifications
1) With appropriate operating mechanisms according to DIN VDE 0113 (see
selection and ordering data).
Standards
DIN VDE 0660, IEC 60947
Switch
Type
3LD2 0
3LD2 1
3LD2 2
3LD2 5
3LD2 7
3LD2 8
Number of contacts
3/4
3/4
3/4
3/4
3/4
3/4
Rated insulation voltage
U
i
Rated operating voltage
U
e
Rated frequency
Rated impulse withstand voltage
U
imp
V
AC V
Hz
kV
690
690
50 ... 60
6
690
690
50 ... 60
6
690
690
50 ... 60
6
690
690
50 ... 60
6
690
690
50 ... 60
6
690
690
50 ... 60
6
Rated short-time withstand current (1 s current, rms value)
Short-circuit protection, max. back-up fuse (gL)
A
A
340
20
640
25
640
50
1260
63
2000
100
2000
125
Rated uninterrupted current I
u
A
16
25
32
63
100
125
AC-21A load-break switch
Rated operating current I
e
A
16
25
32
63
100
125
AC-3 motor load switch
in-service switching
of individual motors
Rating
at 220 V ... 240 V
at 380 V ... 440 V
at 660 V/690 V
kW
kW
kW
3.0
5.5
5.5
4.0
7.5
7.5
5.5
9.5
9.5
11.0
18.5
15.0
18.5
30.0
22.0
22.0
37.0
30.0
AC-23A main control switch
Maintenance switch
frequent, but not
in-service switching
of individual motors
Rating
at 220 V ... 240 V
at 380 V ... 440 V
at 660 V/690 V
kW
kW
kW
4.0
7.5
7.5
5.0
9.5
9.5
6.0
11.5
11.5
11.0
22.0
18.5
18.5
37.0
30.0
22.0
45.0
37.0
Power loss per conducting path at I
e
W
0.5
1.1
1.8
4.5
7.5
12
Touch protection to DIN VDE 0106 Part 100
yes
yes
yes
yes
yes
yes
Mechanical endurance
Oper-
ating
cycles
100 000
100 000
100 000
100 000
100 000
100 000
Operating frequency
1/h
50
50
50
50
50
50
Permissible ambient temperature
°C
–25 ... +55
–25 ... +55
–25 ... +55
–25 ... +55
–25 ... +55
–25 ... +55
Isolating characteristics
up to ...
V
690
690
690
690
690
690
Main control and EMERGENCY-STOP switch characteristics
1)
yes
yes
yes
yes
yes
yes
Conductor cross-sections for main conductors
Connection type
mm
2
Clamp connections
solid or stranded
1 ... 6
1.5 ... 16
1.5 ... 16
2.5 ... 35
4 ... 50
4 ... 50
flexible with end sleeve (max.)
mm
2
4
10
10
16
35
35
Auxiliary switches
Rated insulation voltage
U
i
V
500
500
500
500
500
500
Rated operating voltage U
e
AC V
500
500
500
500
500
500
Rated uninterrupted current I
u
A
10
10
10
10
10
10
Rated operating current I
e
AC-15
at 120 V
A
6
6
6
6
6
6
at 220 V ... 240 V
A
3
3
3
3
3
3
at 380 V ... 415 V
A
1.8
1.8
1.8
1.8
1.8
1.8
at 500 V
A
1.4
1.4
1.4
1.4
1.4
1.4
Short-circuit protection, auxiliary switch, max. back-up fuse (gL/gG) A
10
10
10
10
10
10
Conductor cross-section for auxiliary conductors
Connection type
Clamp connections
solid or stranded
mm
2
2 Ч
(0.75 ... 2.5)
1 Ч
(0.75 ... 4)
1 Ч
(0.75 ... 4)
1 Ч
(0.75 ... 4)
1 Ч
(0.75 ... 4)
1 Ч
(0.75 ... 4)
Finely stranded with end sleeve
mm
2
2 Ч
(0.75 ... 2.5)
1 Ч
(0.75 ... 2.5)
1 Ч
(0.75 ... 2.5)
1 Ч
(0.75 ... 2.5)
1 Ч
(0.75 ... 2.5)
1 Ч
(0.75 ... 2.5)
Standards
UL/CSA
Switch
Type
3LD2 0
3LD2 1
3LD2 2
3LD2 5
3LD2 7
3LD2 8
Rated operating voltage
U
e
AC V
600
600
600
600
600
600
Rated uninterrupted current I
u
A
10
20
30
60
100
125
Current rating
600 A
600 A
600 A
–
–
–
Pilot duty
P600
P600
P600
Conventional thermal current I
th
A
16
25
32
63
100
125
Max. rating (AC-3)
3
∼ 120 V
HP
1
–
–
–
–
–
AC motors 40 Hz ... 60 Hz
240
V
HP
3
7.5
10
15
30
40
(HP = PS)
480
V
HP
7.5
10
20
40
60
75
600
V
HP
10
15
30
50
75
100
1
∼ 120 V
HP
0.5
2
2
–
–
–
240
V
HP
1.5
3
3
10
–
–
Conductor cross-sections
copper cable
AWG
18 ... 10
14 ... 8
14 ... 8
14 ... 6
12 ... 1
12 ... 1
Tightening torque
Nm
1.5 ... 2
2 ... 2.5
2 ... 2.5
2.5 ... 3
2.5 ... 3
2.5 ... 3