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Switch Disconnectors
3NP5 Fuse Switch Disconnectors up to 630 A
Introduction
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Siemens LV 10 · 2014
7
■
Technical specifications
1)
When observing degree of pollution 2 (instead of 3) operation is also possi-
ble up to
U
i
= 1000 V.
2)
Rated making and breaking current according to IEC 60947-3:
Rated making current
I
= 10 ×
I
e
(AC-23); 3 ×
I
e
(AC-22); 1.5 ×
I
e
(AC-21)
Rated breaking current
I
e
= 8 ×
I
e
(AC-23); 3 ×
I
e
(AC-22); 1.5 ×
I
e
(AC-21).
3)
When electronic fuse monitors are used, infeed must be from the top.
4)
When using isolating blades. If using fuse links, please observe specifica-
tions of fuse manufacturer.
5)
With busbar adapter.
6)
Values are valid when using LV HRC fuse systems with characteristic gG.
If using fuses for semiconductor protection, please refer to the assignment
table,
see page 7/145.
7)
When connecting one conductor.
For 2 conductors max. 1 x 50 mm
2
and 1 x 35mm
2
.
Standards
IEC 60947-1, IEC 60947-3, VDE 0660 Part 107
Type
3NP50
3NP52
3NP53
3NP54
Rated uninterrupted current
I
u
A
160
250
400
630
For fuse links acc. to IEC 60269-2
Size 00
1 and 0
2 and 1
3 and 2
Conventional free air thermal current
I
th
A
160
250
400
630
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, with fuse monitoring through 3RV)
Rated insulation voltage
U
i
V
690
1)
690
1)
690
1)
690
1)
Rated impulse withstand voltage
U
imp
kV 6
6
6
6
Rated conditional short-circuit current
with fuses
(by fast switch on)
Rated current
Size/A 00/160
1/250
2/400
3/630
• At 500 V AC (rms value)
kA 50
50
50
50
Permissible let-through current of the fuses (peak value)
kA
15
25
40
50
Short-circuit strength with fuses
(with closed disconnector)
• Rated current
Size/A 00/160
1/250
2/400
3/630
• At 500 V AC (rms value)
kA
100
100
50
50
• Maximum permissible let-through
I
2
t
value
kA
2
s 223
780
2150
5400
• Permissible let-through current of the fuses (peak value)
kA
23
32
40
60
Rated short-circuit making capacity with isolating blades
2)
Size 00
1
2
3
• At 500 V AC (peak value)
kA
6
17
17
17
Rated making and breaking capacity
2)
(infeed from top or bottom)
3)
Size 00
1
0
2 1 3
2
Breaking current
I
c
• At p.f. = 0.35, rms value
A
1300
2500 1600 4000 2500 5040 4000
• At p.f. = 0.35, rms value
A
800
1280 1000 2520 1600 3200 2520
• At p.f. = 0.35 and 400 V AC, with fuse links, rms value
A
1600
2500 1600 4000 2500 5040 4000
Rated operational current
I
e
• At AC-21B, AC-22B, AC-23B at 500 V AC, with fuse links
A
160
250 160 400 250 630 400
• At AC-21B, AC-22B, AC-23B at 690 V AC, with fuse links
A
160
250 160 400 250 630 400
• At AC-21B, AC-22B
A
160
250 160 400 250 630 400
• At AC-23B
A
100
160 125 315 200 400 315
At 220 (440) V DC, with 2 (3) conducting paths series-connected and fuse links:
• Breaking current
I
c
(
L/R
= 15 ms)
A
640
1000 640 1600 1600 2520 1600
• Rated operational current
I
e
for DC-23B
A
160
250 160 250 250 630 400
Capacitor switching capacity
• Capacitor rating at 400 V AC
kvar
80
90
150
250
• Rated current
I
n
at 525 V AC
A
116
130
216
361
• Capacitor rating
kvar
100
125
200
300
• Rated current
I
n
A
110
137
220
330
Permissible ambient temperature
°C -25 ... +55 for operation
4
), -50 ... +80 during storage
Mechanical endurance,
operating cycles
1600
Degree of protection
• Without molded-plastic masking frame
IP00, for 3NP52 with terminal clamp connection,
degree of protection IP10
• With molded-plastic masking frame with closed fuse carrier on the operator side
IP30
• With molded-plastic masking frame with open fuse carrier
IP10
Power loss of the switch at
I
th
(without power loss of fuse links)
Without busbar adapter
W 7.8 (16.3)
5)
7.5
15
39
Maximum power loss of the usable fuses (per fuse)
6)
W 12
23
37
50
Main conductor connections
Flat terminal for connection of
• Crimped cable lugs acc. to DIN 46234 (conductor cross-section, stranded)
mm
2
2.5 ... 120 6 ... 150
6 ... 240
6 ... 2 × 240
• Pressed cable lugs acc. to DIN 46235 (conductor cross-section, stranded)
mm
2
16 ... 70 16 ... 150
16 ... 240
16 ... 2 × 240
• Busbars (usable busbar width)
mm 16 ... 22 22 ... 30
22 ... 30
22 ... 30
Clamp terminals
mm
2
2.5 ... 50
7)
35 ... 120
--
--
Auxiliary switch 1 NO + 1 NC (accessories)
The same voltage potential must be applied to the NO and NC
contacts
• At 50 Hz/60 Hz to 400 V AC, rated operational current
I
e
at AC-12/AC-15 A
A
16/6
• Flat plug-in terminals (DIN 46244)
A 6.3 ... 0.8
Permissible mounting positions
Vertical or horizontal installation
(switching capacity may be reduced with horizontal installation)
Signaling contact for solid-state fuse monitoring
2 NO + 1 NC
• Rated operational current
I
e
at 250 V, DC-13
A
0.27
• Rated operational current
I
e
at 240 V, AC-15
A
1.5
• Thermal free-air rated current
I
th
A
5
© Siemens AG 2014