216 / 582
BETA Protecting
Low-Voltage Fuse Systems
3
NP LV HRC fuse switch disconnectors
3/66
Siemens ET B1 · 10/2008
3
*
You can order this quantity or a multiple thereof.
1)
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
= 8 ×
I
e
(
AC-23); 3 ×
I
e
(
AC-22); 1.5 ×
I
e
(
AC-21).
2)
When electronic fuse monitors are used, infeed must be from the top.
3)
Insert silver-plated isolating links.
3
NP50
3
NP52
3
NP53
3
NP54
Short-circuit strength with fuses
(
with closed disconnector)
With fuse links
Rated current
Size/A
00/160
1/250
2/400
3/630
At 500 V AC
kA
(
r.m.s. value)
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
kA
(
peak value)
23
32
40
60
Rated short-circuit making capacity
With isolating links
1)
Size
00
1
2
3
At 500 V AC
kA
(
peak value)
6
17
17
17
Rated making and breaking capacity
1)
(
infeed from top or bottom)
2)
Size
00
1
0
2
1
3
2
At 400 V AC, with fuse links
Breaking current
I
c
(
p.f. = 0.35)
A
(
r.m.s. value)
1600
2500 1600 4000 2500 5040 4000
Rated operational current
I
e
for
AC-21B, AC-22B, AC-23B
A
160
250
160
400
250
630
400
At 500 V AC, with fuse links
Breaking current
I
c
(
p.f. = 0.35)
A
(
r.m.s. value)
1300
2500 1600 4000 2500 5040 4000
Rated operational current
I
e
for
AC-21B, AC-22B, AC-23B
A
160
250
160
400
250
630
400
At 690 V AC, with fuse links
Breaking current
I
c
(
p.f. = 0.35)
A
(
r.m.s. value)
800
1280 1000 2520 1600 3200 2520
Rated operational current
I
e
at
AC-21B, AC-22B
A
160
250
160
400
250
630
400
AC-23B
A
100
160
125
315
200
400
315
At 220 (440) V DC, with 2 (3) conducting paths in
series 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
Switching capacity with isolating links
3)
(
infeed from top or bottom)
At 400 V AC, with isolating links
Size
00
1
2
3
Breaking current
I
c
(
p.f. = 0.35)
A
(
r.m.s. value)
1600
2500
2500
4000
Rated operational current
I
e
at
AC-21B, AC-22B
A
160
250
400
630
AC-23B
A
160
250
315
500
At 500 V AC, with isolating links
Breaking current
I
c
(
p.f. = 0.35)
A
(
r.m.s. value)
1300
2500
2500
4000
Rated operational current
I
e
at
AC-21B, AC-22B
A
160
250
400
630
AC-23B
A
160
250
315
500
At 690 V AC, with isolating links
Breaking current
I
c
(
p.f. = 0.35)
A
(
r.m.s. value)
800
1280
1600
2520
Rated operational current
I
e
at
AC-21B, AC-22B
A
160
250
400
630
AC-23B
A
100
160
200
315
At 220 V DC, with isolating links
Breaking current
I
c
(
L/R = 15 ms)
A
640
1000
1600
1600
Rated operational current
I
e
for DC-23B
A
160
200
400
400
Switching capacity for horizontal installation
Up to 690 V AC-22B
No reduction of the specified switching capacity
(
values for AC-23B to 690 V on request)
© Siemens AG 2008