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Switch Disconnectors
3KL Switch Disconnectors with Fuses up to 800 A
Introduction
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Siemens LV 10 · 2014
■
Technical specifications
1)
Technical specifications for approval on request.
2)
Configuring note: Max. permissible operating temperature
for fuse blades 135 °C, for connections 100 °C.
3)
110 V (one conducting path).
4)
With 3KL61 for operation -25 °C ... +35 °C, at +55 °C:
I
th
= 570 A.
5)
With 3ND1 switchgear protection fuse.
6)
AC-23B.
7)
220 V DC (L1 and L3 series-connected) or 110 V DC
(one conducting path) at DC-23A.
8)
At 440 V
L/R
= 4 ms, at 220 V
L/R
= 15 ms.
9)
Only DC-22A (
L/R
= 2.5 ms).
10)
At 440 V DC-22A, at 220 V DC-23A.
Note:
For the 3KL switch disconnectors, complete kits for standard
and EMERGENCY-STOP application are available for installation
in the side and rear panels of control cabinets.
Standards
IEC 60947-1, IEC 60947-3, VDE 0660 Part 107
Type
3KL50 3KL52
1)
3KL53
1)
3KL55
1)
3KL57
1)
3KL61
1)
3KL62
1)
Rated uninterrupted current
I
u
A 63
125
160
250
400
630
800
For fuse links according to DIN 43620,
(when SITOR semiconductor fuses are used,
a reduction of rated current is necessary,
see reference to technical information at start of chapter
)
Size 00 and
000
00 and
000
00 and
000
1 and 2 1 and 2 3 and 2 3 and 2
Conventional free-air thermal current
I
th
2)
A 63
125
160
250
400
630
800
Rated insulation voltage
U
i
V 690
1000
1000
1000
1000
1000
1000
Rated impulse withstand voltage
U
imp
kV 6
8
8
8
8
8
8
Rated operational voltage
U
e
50/60 Hz AC
V 690
DC
V 440 (3 conducting paths series-connected)
220 (2 conducting paths series-connected)
3)
Rated short-circuit making capacity with fuses
Peak value at 50/60 Hz 690 V AC
kA
220
220
220
176
176
105
105
Rated conditional short-circuit current with fuses
kA 100
100
100
80
80
50
50
At 50/60 Hz 690 V AC (rms value)
Max. rated current
I
n
of the fuses
A 80
160
160
400
400
630
4)
800
Max. permissible power loss of the installed fuse
• NH
W 6
9
11.5
32
45
48
62
• BS
W 8 (A2/A3) 11.5 (A4) 11.5
32
45
48
60.5
Permissible let-through current of the fuses
kA 8
17
17
30
5)
30
5)
50
50
Max. permissible let-through
I
2
t
value
kA
2
s 55
223
223
1000
1000
5400
10500
Breaking capacity
(infeed from the top or bottom)
At 400 V AC
• Breaking current
I
c
(at p.f. = 0.35, rms value)
A
500
1000
1280
2000
3200
5100
6400
• Rated operational current
I
e
with AC-21A, AC-22A, AC-23A
A 63
125
160
250
400
630
6)
800
6)
• Motor switching capacity AC-23A
kW 30
65
80
132
200
335
400
At 500 V AC
• Breaking current
I
c
(at p.f. = 0.35, rms value)
A
500
1000
1280
2000
3200
5100
6400
• Rated operational current
I
e
with AC-21A, AC-22A, AC-23A
A 63
125
160
250
400
630
6)
800
6)
• Motor switching capacity AC-23A
kW 40
90
110
185
280
425
500
At 690 V AC
• Breaking current
I
c
(at p.f. = 0.35, rms value)
A 500
1000
1280
2000
3200
5100
6400
• Rated operational current
I
e
with AC-21A, AC-22A, AC-23A
A 63
125
160
250
400
630
5)
800
5)
• Motor switching capacity AC-23A
kW 50
110
150
220
375
560
700
At 440 V DC (3 conducting paths series-connected)
7)
• Breaking current
I
c
(
L/R
= 15 ms)
A 250
500
640
1000
8)
1600
2520
9)
2520
9)
• Rated operational current
I
e
at DC-23A
A 63
125
160
250
10)
400
630
10)
630
10)
Rated short-time current
I
cw
(1 s current, rms value)
kA 2.5
3.2
3.2
8
11
32
32
Permissible ambient temperature
°C -25 ... +55 for operation
4)
,
°C -50 ... +80 when stored
Mechanical endurance,
operating cycles
15000 15000 15000 12000 12000 3000
3000
Degree of protection
IP00/IP20 (from the operator side, with fuse and terminal covers)
Power loss of the switch disconnector at
I
th
W 8.5
22
36
33
86
140
225
(plus power loss of the fuses)
Main conductor connections
Busbar systems, max. dimensions (W x T)
mm 25 x 9 45 x 10 45 x 10 40 x 12 40 x 15 40 x 17 40 x 17
Cable lug, max. conductor cross-section (stranded)
mm
2
35
70
120
150
2 x 150 or
1 x 240
2 x 240 2 x 240
Tightening torque
Nm 6 ... 7.5 7 ... 10 18 ... 22 35 ... 45 35 ... 45 56
56
Terminal screws
M6
M6
M8
M10
M10
M12
M12
Protective conductor connections
Flat bars
mm --
--
--
20 x 2.5 20 x 2.5 --
--
Cable lug, max. conductor cross-section (stranded)
mm
2
--
--
--
70
120
--
--
© Siemens AG 2014