132 / 158
Switch Disconnectors
3NP1 Fuse Switch Disconnectors up to 630 A
Fuses
7/132
Siemens LV 10 · 2014
7
■
Overview
The 3NP1 fuse switch disconnectors are suitable for all fuses in
LV HRC design,
see chapter 5
.
SITOR semiconductor fuses in LV HRC design can also be used,
although it must be noted that, compared to cable and line pro-
tection fuses, these get much hotter during operation. For this
reason, the fuse must be operated below the rated current
I
n
of the device (derating) when installed in a closed switching
device.
The following table shows the permissible load currents of the
SITOR semiconductor fuses for installation in 3NP1. The values
were determined using the conductor cross-sections specified
in the table.
Note
If using smaller cross-sections, a considerably higher derating is
required due to the lower heat dissipation.
SITOR semiconductor fuses for 3NP1 fuse switch disconnectors: Assignment table
SITOR semiconductor fuse data
Permissible load currents of fuse when installed in
3NP1 for floor mounting
3NP1 for busbar mounting
Type
1)
Rated
current
I
n
Rated
voltage
2)
Opera-
tional
class
Size Required con-
ductor cross-
section Cu
Type
Size Permissible
load
current
3)
Type
Size Permissible
load
current
3) 4)
A
V AC
mm²
A
A
3NC23..
150
500
gR 3 70
3NP1163
3 140
3NP1163
3 150
3NC2425..
200
500
gR 3 95
3NP1163
3 175
3NP1163
3 190
3NC2427..
250
500
gR 3 120
3NP1163
3 220
3NP1163
3 237
3NC2428..
300
500
gR 3 185
3NP1163
3 250
3NP1163
3 285
3NC2431..
350
500
gR 3 240
3NP1163
3 320
3NP1163
3 332
3NC2432..
400
500
aR 3 240
3NP1163
3 370
3NP1163
3 380
3NC3336-1
630
1000
aR 3 2x (40x5)
3NP1163
3 500
3NP1163
3 500
3NC3430-1
315
1250
aR 3 2x95
3NP1163
3 280
3NP1163
3 285
3NC3432-1
400
1250
aR 3 2x120
3NP1163
3 340
3NP1163
3 340
3NC3434-1
500
1250
aR 3 2x150
3NP1163
3 400
3NP1163
3 425
3NC3436-1
630
1250
aR 3 2x (40x5)
3NP1163
3 460
3NP1163
3 535
3NC8423..
150
660
gR 3 70
3NP1163
3 120
3NP1163
3 140
3NC8425..
200
660
gR 3 95
3NP1163
3 160
3NP1163
3 190
3NC8427..
250
660
gR 3 120
3NP1163
3 200
3NP1163
3 240
3NC8431..
350
660
gR 3 240
3NP1163
3 270
3NP1163
3 300
3NC8434..
500
660
gR 3 2x 150
3NP1163
3 385
3NP1163
3 385
3NE1020-2
80
690
gR 00 25
3NP1133
00 80
3NP1133
00 80
3NE1021-0
100
690
gS
00 35
3NP1133
00 100
3NP1133
00 100
3NE1021-2
100
690
gR 00 35
3NP1133
00 95
3NP1133
00 95
3NE1022-0
125
690
gS
00 50
3NP1133
00 120
3NP1133
00 120
3NE1022-2
125
690
gR 00 50
3NP1133
00 115
3NP1133
00 115
3NE1224-0
160
690
gS
1 70
3NP1143
1 160
3NP1143
1 160
3NP1153
2 160
3NP1153
2 160
3NE1224-2/-3 160
690
gR 1 70
3NP1143
1 150
3NP1143
1 152
3NP1153
2 200
3NP1153
2 200
3NE1224-2/-3 160
690
gR 1 70
3NP1143
1 150
3NP1143
1 152
3NP1153
2 160
3NP1153
2 160
3NE1225-2/-3 200
690
gR 1 95
3NP1143
1 180
3NP1143
1 180
3NP1153
2 190
3NP1153
2 190
3NE1227-0
250
690
gS
1 120
3NP1143
1 235
3NP1143
1 238
3NP1153
2 250
3NP1153
2 250
3NE1227-2/-3 250
690
gR 1 120
3NP1143
1 220
3NP1143
1 213
3NP1153
2 235
3NP1153
2 235
3NE1230-0
315
690
gS
1 2x 70
3NP1153
2 290
3NP1153
2 315
3NE1230-2/-3 315
690
gR 1 2x 70
3NP1153
2 278
3NP1153
2 315
3NP1163
3 380
3NP1163
3 400
3NE1331-0
350
690
gS
2 2x 95
3NP1153
2 315
3NP1153
2 350
3NP1163
3 340
3NP1163
3 350
3NE1331-2/-3 350
690
gR 2 2x 95
3NP1153
2 300
3NP1153
2 330
3NP1163
3 330
3NP1163
3 350
3NE1332-0
400
690
gS
2 2x 95
3NP1153
2 340
3NP1153
2 380
3NE1332-2/-3 400
690
gR 2 2x 95
3NP1153
2 328
3NP1153
2 360
3NP1163
3 370
3NP1163
3 400
3NE1333-0
450
690
gS
2 2x 120
3NP1163
3 450
3NP1163
3 430
3NE1333-2/-3 450
690
gR 2 2x 120
3NP1163
3 430
3NP1163
3 420
© Siemens AG 2014