Sentric np fuse switch disconnectors, General data – Siemens AC-21A User Manual
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Siemens LV 10 · 2004
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SENTRIC NP Fuse Switch Disconnectors
General data
7
■
Technical specifications
1) 125/160 A only with 3NY1 236 supply terminals and with 21 mm wide fuse
links 3NY1 822 (125 A) and 3NY1 824 (160 A); see Accessories.
2) Only for isolating links; otherwise note instructions of the fuse manufac-
turer.
3) For no-load switching (AC-20 B, DC-20 B), DC voltages up to DC 690 V
can be applied.
4) For safety monitoring max. 690 V.
5) For pollution severity 2, the switch disconnectors can be used up to 1000 V
AC-20 B, DC-20 B (no-load switching).
6) Conducting paths in series: 3 at 3NP40; 2 at 3NP42, 3NP43 and 3NP44.
Standards
IEC 60947-1, IEC 60947-3, VDE 0660 Part 107
Type
3NP40 1
3NP40 7
3NP42 7
3NP43 7
3NP44 7
Rated uninterrupted current I
u
A
160
1)
160
250
400
630
For fuse links acc. to DIN 43620
Size
00C/000
00
1 and 0
2 and 1
3 and 2
Continuous thermal current I
th
A
160
1)
160
250
400
630
Rated operating voltage
U
e
AC 50 Hz/60 Hz
V
690
690
DC
V
220
(3 conducting paths in series)
440
(2 conducting paths in series)
Rated insulation voltage
U
i
V
690
690
800
4)
800
4)
800
4)
Rated impulse withstand voltage
U
imp
kV
6
6
6
6
6
Rated conditional short-circuit current with fuses
(on rapid closing)
With fuse links
Rated current
Size/A
000/100 (35)
00/160
1/250
2/400
3/630
at AC 400 V (690 V)
kA (rms value)
50 (50)
50
50
50
50
Maximum permissible let-through I
2
t value
kA
2
s
56 (7.8)
158
551
1515
4340
Permissible let-through current of the fuse
kA (peak value)
11 (5)
15
25
35
55
Short-circuit strength with fuses
(with closed disconnector)
With fuse links
Rated current
Size/A
000/100
00/160
1/250
2/400
3/630
at 690 V
kA (rms value)
100
50
50
50
50
Permissible let-through current of the fuse
kA (peak value)
15
15
25
35
55
Rated making and breaking capacity
(Feed-in from top or bottom)
At AC 400 V, with fuse links
or isolating links
Size
000
00
1
2
3
Rated breaking current I
c
(p.f. = 0.35)
A (rms value)
800 (p.f. = 0.45)
800
2000
3200
5040
Rated operating current I
e
at
AC-21B, AC-22B
AC-23B
A
A
160
100
160
100
250
250
400
400
630
630
At AC 500 V, with fuse links
or isolating links
Size
000
00
1
2
3
Rated breaking current I
c
(p.f. = 0.35)
A (rms value)
320 (p.f. = 0.45)
320
750
1200
1890
Rated operating current I
e
at
AC-21 B
AC-22B
AC-23B
A
A
A
160
100
40
160
100
40
250
250
–
400
400
–
630
630
–
At AC 690 V, with fuse links
or isolating links
Size
000
00
1
2
3
Rated breaking current I
c
(p.f. = 0.35)
A (rms value)
200/240
(p.f. = 0.45/0.95)
200/240
(p.f. = 0.45/0.95)
375
600
945
Rated operating current I
e
at
AC-21 B
AC-22B
AC-23B
A
A
A
160
50
25
160
50
25
250
–
–
400
–
–
630
–
–
At DC 220 V/240 V, with fuse links
3)5)6)
or isolating links
Size
000
00
1
2
3
Rated operating current I
e
at
220 V DC-23B/DC-21B
440 V DC-21B
A
A
80/160
–
80/160
–
–
250
–
400
–
630