Switch disconnectorsSwitch disconnectors
Derating values of 3NP5 fuse switch disconnectors when using SITOR fuses
3NC (derating values)
3NP5 fuse switch disconnectors are suitable for all fuses in LV HRC design.
SITOR semiconductor fuses in LV HRC design can also be used. Although it must be noted that, compared to cable and line protection fuses, these get much hotter during operation. For this reason, the fuse must be operated below the rated current In 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 3NP5. The values were determined using the conductor cross-sections specified in the table.
SITOR semiconductor fuse data |
Permissible load currents of fuse when installed in 3NP5 for floor mounting |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Type 3NP5 |
Alternative type 3NP5 |
||||||||||
Type 1)2) |
Size |
Rated current In |
Rated voltage 3) |
Operational class |
Required conductor cross-section Cu |
Type |
Size |
Perm. load current 4) |
Alternative type |
Size |
Perm. load current5) |
A |
V AC |
mm2 |
|||||||||
3NC2423 |
3 |
250 |
500 |
gR |
70 |
3NP54 |
3 |
145 |
-- |
-- |
-- |
3NC2425.. |
3 |
200 |
500 |
gR |
95 |
3NP54 |
3 |
180 |
-- |
-- |
-- |
3NC2427.. |
3 |
250 |
500 |
gR |
120 |
3NP54 |
3 |
225 |
-- |
-- |
-- |
3NC2428.. |
3 |
300 |
500 |
gR |
185 |
3NP54 |
3 |
255 |
-- |
-- |
-- |
3NC2431.. |
3 |
350 |
500 |
gR |
240 |
3NP54 |
3 |
330 |
-- |
-- |
-- |
3NC2432.. |
3 |
400 |
500 |
aR |
240 |
3NP54 |
3 |
400 |
-- |
-- |
-- |
3NC3336-1 |
3 |
630 |
1000 |
aR |
2 x (40 x 5) |
3NP54 |
3 |
530 |
-- |
-- |
-- |
3NC3337-1 |
3 |
710 |
1000 |
aR |
2 x (50 x 5) |
3NP54 |
3 |
570 |
-- |
-- |
-- |
3NC3338-1 |
3 |
800 |
1000 |
aR |
2 x (40 x 8) |
3NP54 |
3 |
630 |
-- |
-- |
-- |
3NC3340-1 |
3 |
900 |
1000 |
aR |
2 x (40 x 8) |
3NP54 |
3 |
700 5) |
-- |
-- |
-- |
3NC3341-1 |
3 |
100 |
1000 |
aR |
2 x (50 x 8) |
3NP54 |
3 |
770 5) |
-- |
-- |
-- |
3NC3342-1 |
3 |
110 |
800 |
aR |
2 x (50 x 8) |
3NP54 |
3 |
800 5) |
-- |
-- |
-- |
3NC3343-1 |
3 |
1250 |
800 |
aR |
2 x (50 x 8) |
3NP54 |
3 |
850 5) |
-- |
-- |
-- |
3NC3430-1 |
3 |
315 |
1250 |
aR |
2 x 95 |
3NP54 |
3 |
295 |
-- |
-- |
-- |
3NC3432-1 |
3 |
400 |
1250 |
aR |
2 x 120 |
3NP54 |
3 |
355 |
-- |
-- |
-- |
3NC3434-1 |
3 |
500 |
1250 |
aR |
2 x 150 |
3NP54 |
3 |
440 |
-- |
-- |
-- |
3NC3436-1 |
3 |
630 |
1250 |
aR |
2 x (40 x 5) |
3NP54 |
3 |
520 |
-- |
-- |
-- |
3NC3438-1 |
3 |
800 |
1100 |
aR |
2 x (40 x 8) |
3NP54 |
3 |
625 |
-- |
-- |
-- |
3NC8423.. |
3 |
150 |
660 |
gR |
70 |
3NP54 |
3 |
135 |
-- |
-- |
-- |
3NC8425.. |
3 |
200 |
660 |
gR |
95 |
3NP54 |
3 |
180 |
-- |
-- |
-- |
3NC8427.. |
3 |
250 |
660 |
gR |
120 |
3NP54 |
3 |
225 |
-- |
-- |
-- |
3NC8431.. |
3 |
350 |
660 |
gR |
240 |
3NP54 |
3 |
300 |
-- |
-- |
-- |
3NC8434.. |
3 |
500 |
660 |
gR |
2 x 150 |
3NP54 |
3 |
425 |
-- |
-- |
-- |
3NC8444-3C |
3 |
1000 |
600 |
aR |
2 x (69 x 6) |
3NP54 |
3 |
850 5) |
-- |
-- |
-- |
1) Due to the mechanical stress on the relatively long fuse blades, SITOR 3NE41 semiconductor fuses should only be switched occasionally and only at zero current.
2) Permissible load currents for 3NE8...-0MK, see chapter Technical specifications 3NE8 (derating values)
3) 3NP1 fuse switch disconnectors may be operated at up to 1000 V AC/DC with the following restrictions: Degree of pollution 2 (instead of 3) / AC20 or DC20 – i.e. switching only without load
4) In the case of cyclic loads, the currents may have to be further reduced (precise values on request).
5) The fuse can also be operated at a higher rated uninterrupted current than the 630 A current of the 3NP54. However, in this case, the 3NP54 must not be switched under load (utilization category AC-20).
3NE1 (derating values)
SITOR semiconductor fuse data |
Permissible load currents of fuse when installed in 3NP5 for floor mounting |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Type 3NP5 |
Alternative type 3NP5 |
||||||||||
Type 1)2) |
Size |
Rated current In |
Rated voltage 3) |
Operational class |
Required conductor cross-section Cu |
Type |
Size |
Perm. load current 4) |
Alternative type |
Size |
Perm. load current5) |
A |
V AC |
mm2 |
|||||||||
3NE1020-2 |
00 |
80 |
690 |
gR |
25 |
3NP50 |
00 |
80 |
-- |
-- |
-- |
3NE1021-0 |
00 |
100 |
690 |
gS |
35 |
3NP50 |
00 |
100 |
-- |
-- |
-- |
3NE1021-2 |
00 |
100 |
690 |
gR |
35 |
3NP50 |
00 |
100 |
-- |
-- |
-- |
3NE1022-0 |
00 |
125 |
690 |
gS |
50 |
3NP50 |
00 |
125 |
-- |
-- |
-- |
3NE1022-2 |
00 |
125 |
690 |
gR |
50 |
3NP50 |
00 |
125 |
-- |
-- |
-- |
3NE1224-0 |
1 |
160 |
690 |
gS |
70 |
3NP52 |
1 |
160 |
3NP53 |
2 |
160 |
3NE1224-2/3 |
1 |
160 |
690 |
gR |
70 |
3NP52 |
1 |
160 |
3NP53 |
2 |
160 |
3NE1225-0 |
1 |
200 |
690 |
gS |
95 |
3NP52 |
1 |
200 |
3NP53 |
2 |
200 |
3NE1225-2 |
1 |
200 |
690 |
gR |
95 |
3NP52 |
1 |
200 |
3NP53 |
2 |
200 |
3NE1225-3 |
1 |
200 |
690 |
gR |
95 |
3NP52 |
1 |
190 |
3NP53 |
2 |
200 |
3NE1227-0 |
1 |
250 |
690 |
gS |
120 |
3NP52 |
1 |
250 |
3NP53 |
2 |
250 |
3NE1227-2 |
1 |
250 |
690 |
gR |
120 |
3NP52 |
1 |
250 |
3NP53 |
2 |
250 |
3NE1227-3 |
1 |
250 |
690 |
gR |
120 |
3NP52 |
1 |
235 |
3NP53 |
2 |
250 |
3NE1230-0 |
1 |
315 |
690 |
gS |
2 x 70 |
3NP53 |
2 |
315 |
-- |
-- |
-- |
3NE1230-2/3 |
1 |
315 |
690 |
gR |
2 x 70 |
3NP53 |
2 |
315 |
-- |
-- |
-- |
3NE1331-0 |
2 |
350 |
690 |
gS |
2 x 95 |
3NP53 |
2 |
350 |
3NP54 |
3 |
350 |
3NE1331-2/3 |
2 |
350 |
690 |
gR |
2 x 95 |
3NP53 |
2 |
350 |
3NP54 |
3 |
350 |
3NE1332-0 |
2 |
400 |
690 |
gS |
2 x 95 |
3NP53 |
2 |
400 |
3NP54 |
3 |
400 |
3NE1332-2/3 |
2 |
400 |
690 |
gR |
2 x 95 |
3NP53 |
2 |
400 |
3NP54 |
3 |
400 |
3NE1333-0 |
2 |
450 |
690 |
gS |
2 x 120 |
3NP54 |
3 |
450 |
-- |
-- |
-- |
3NE1333-2/3 |
2 |
450 |
690 |
gR |
2 x 120 |
3NP54 |
3 |
450 |
-- |
-- |
-- |
3NE1334-0 |
2 |
500 |
690 |
gS |
2 x 120 |
3NP54 |
3 |
500 |
-- |
-- |
-- |
3NE1334-2/3 |
2 |
500 |
690 |
gR |
2 x 120 |
3NP54 |
3 |
500 |
-- |
-- |
-- |
3NE1435-0 |
3 |
560 |
690 |
gS |
2 x 150 |
3NP54 |
3 |
560 |
-- |
-- |
-- |
3NE1435-2/3 |
3 |
560 |
690 |
gR |
2 x 150 |
3NP54 |
3 |
560 |
-- |
-- |
-- |
3NE1436-0 |
3 |
630 |
690 |
gS |
2 x 185 |
3NP54 |
3 |
630 |
-- |
-- |
-- |
3NE1436-2/3 |
3 |
630 |
690 |
gR |
2 x 185 |
3NP54 |
3 |
625 |
-- |
-- |
-- |
3NE1437-0 |
3 |
710 |
690 |
gS |
2 x (40 x 5) |
3NP54 |
3 |
710 5) |
-- |
-- |
-- |
3NE1437-1 |
3 |
710 |
600 |
gR |
2 x (4 x 5) |
3NP54 |
3 |
690 5) |
- |
-- |
-- |
3NE1437-2/3 |
3 |
710 |
690 |
gR |
2 x (40 x 5) |
3NP54 |
3 |
685 5) |
- |
-- |
-- |
3NE1438-0 |
3 |
800 |
690 |
gS |
2 x (50 x 5) |
3NP54 |
3 |
800 5) |
-- |
-- |
-- |
3NE1438-1 |
3 |
800 |
600 |
gR |
2 x (50 x 5) |
3NP54 |
3 |
750 5) |
-- |
-- |
-- |
3NE1438-2/3 |
3 |
800 |
690 |
gR |
2 x (50 x 5) |
3NP54 |
3 |
770 5) |
-- |
-- |
-- |
3NE1447-2/3 |
3 |
670 |
690 |
gR |
2 x (40 x 5) |
3NP54 |
3 |
655 5) |
-- |
-- |
-- |
3NE1448-2/3 |
3 |
850 |
690 |
gR |
2 x (40 x 8) |
3NP54 |
3 |
820 5) |
-- |
-- |
-- |
3NE1802-0 |
000 |
40 |
690 |
gS |
10 |
3NP50 |
00 |
40 |
-- |
-- |
-- |
3NE1803-0 |
000 |
35 |
690 |
gS |
6 |
3NP50 |
00 |
35 |
-- |
-- |
-- |
3NE1813-0 |
000 |
16 |
690 |
gS |
1.5 |
3NP50 |
00 |
16 |
-- |
-- |
-- |
3NE1814-0 |
000 |
20 |
690 |
gS |
2.5 |
3NP50 |
00 |
20 |
-- |
-- |
-- |
3NE1815-0 |
000 |
25 |
690 |
gS |
4 |
3NP50 |
00 |
25 |
-- |
-- |
-- |
3NE1817-0 |
000 |
50 |
690 |
gS |
10 |
3NP50 |
00 |
50 |
-- |
-- |
-- |
3NE1818-0 |
000 |
63 |
690 |
gS |
16 |
3NP50 |
00 |
63 |
-- |
-- |
-- |
3NE1820-0 |
000 |
80 |
690 |
gS |
25 |
3NP50 |
00 |
80 |
-- |
-- |
-- |
1) Due to the mechanical stress on the relatively long fuse blades, SITOR 3NE41 semiconductor fuses should only be switched occasionally and only at zero current.
2) Permissible load currents for 3NE8...-0MK, see chapter Technical specifications 3NE8 (derating values)
3) 3NP1 fuse switch disconnectors may be operated at up to 1000 V AC/DC with the following restrictions: Degree of pollution 2 (instead of 3) / AC20 or DC20 – i.e. switching only without load
4) In the case of cyclic loads, the currents may have to be further reduced (precise values on request).
5) The fuse can also be operated at a higher rated uninterrupted current than the 630 A current of the 3NP54. However, in this case, the 3NP54 must not be switched under load (utilization category AC-20).
3NE3 (derating values)
SITOR semiconductor fuse data |
Permissible load currents of fuse when installed in 3NP5 for floor mounting |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Type 3NP5 |
Alternative type 3NP5 |
||||||||||
Type 1)2) |
Size |
Rated current In |
Rated voltage 3) |
Operational class |
Required conductor cross-section Cu |
Type |
Size |
Perm. load current 4) |
Alternative type |
Size |
Perm. load current5) |
A |
V AC |
mm2 |
|||||||||
3NE3221 |
1 |
100 |
1000 |
aR |
35 |
3NP52 |
1 |
95 |
3NP53 |
2 |
100 |
3NE3222 |
1 |
125 |
1000 |
aR |
50 |
3NP52 |
1 |
110 |
3NP53 |
2 |
120 |
3NE3224 |
1 |
160 |
1000 |
aR |
70 |
3NP52 |
1 |
140 |
3NP53 |
2 |
150 |
3NE3225 |
1 |
200 |
1000 |
aR |
95 |
3NP52 |
1 |
175 |
3NP53 |
2 |
190 |
3NE3227 |
1 |
250 |
1000 |
aR |
120 |
3NP52 |
1 |
210 |
3NP53 |
2 |
230 |
3NE3230-0B |
1 |
315 |
1000 |
aR |
185 |
3NP53 |
2 |
285 |
-- |
-- |
-- |
3NE3231 |
1 |
350 |
1000 |
aR |
240 |
3NP53 |
2 |
310 |
-- |
-- |
-- |
3NE3232-0B |
1 |
400 |
1000 |
aR |
240 |
3NP53 |
2 |
330 |
-- |
-- |
-- |
3NE3233 |
1 |
450 |
1000 |
aR |
2 x 150 |
3NP53 |
2 |
360 |
-- |
-- |
-- |
3NE3332-0B |
2 |
400 |
1000 |
aR |
240 |
3NP54 |
3 |
360 |
-- |
-- |
-- |
3NE3333 |
2 |
450 |
1000 |
aR |
2 x 150 |
3NP54 |
3 |
400 |
-- |
-- |
-- |
3NE3334-0B |
2 |
500 |
1000 |
aR |
2 x 150 |
3NP54 |
3 |
450 |
-- |
-- |
-- |
3NE3335 |
2 |
560 |
1000 |
aR |
2 x 185 |
3NP54 |
3 |
510 |
-- |
-- |
-- |
3NE3336 |
2 |
630 |
1000 |
aR |
2 x 185 |
3NP54 |
3 |
580 |
-- |
-- |
-- |
3NE3337-8 |
2 |
710 |
900 |
aR |
2 x (40 x 5) |
3NP54 |
3 |
630 |
-- |
-- |
-- |
3NE3338-8 |
2 |
800 |
800 |
aR |
2 x 240 |
3NP54 |
3 |
630 |
-- |
-- |
-- |
3NE3340-8 |
2 |
900 |
690 |
aR |
2 x (40 x 8) |
3NP54 |
3 |
630 |
-- |
-- |
-- |
1) Due to the mechanical stress on the relatively long fuse blades, SITOR 3NE41 semiconductor fuses should only be switched occasionally and only at zero current.
2) Permissible load currents for 3NE8...-0MK
3) 3NP1 fuse switch disconnectors may be operated at up to 1000 V AC/DC with the following restrictions: Degree of pollution 2 (instead of 3) / AC20 or DC20 – i.e. switching only without load
4) In the case of cyclic loads, the currents may have to be further reduced (precise values on request).
5) The fuse can also be operated at a higher rated uninterrupted current than the 630 A current of the 3NP54. However, in this case, the 3NP54 must not be switched under load (utilization category AC-20).
3NE4 (derating values)
SITOR semiconductor fuse data |
Permissible load currents of fuse when installed in 3NP5 for floor mounting |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Type 3NP5 |
Alternative type 3NP5 |
||||||||||
Type 1)2) |
Size |
Rated current In |
Rated voltage 3) |
Operational class |
Required conductor cross-section Cu |
Type |
Size |
Perm. load current 4) |
Alternative type |
Size |
Perm. load current5) |
A |
V AC |
mm2 |
|||||||||
3NE4101 |
0 |
32 |
1000 |
gR |
6 |
3NP52 |
1 |
32 |
-- |
-- |
-- |
3NE4102 |
0 |
40 |
1000 |
gR |
10 |
3NP52 |
1 |
40 |
-- |
-- |
-- |
3NE4117 |
0 |
50 |
1000 |
gR |
10 |
3NP52 |
1 |
50 |
-- |
-- |
-- |
3NE4118 |
0 |
63 |
1000 |
aR |
16 |
3NP52 |
1 |
63 |
-- |
-- |
-- |
3NE4120 |
0 |
80 |
1000 |
aR |
25 |
3NP52 |
1 |
80 |
-- |
-- |
-- |
3NE4121 |
0 |
100 |
1000 |
aR |
35 |
3NP52 |
1 |
95 |
-- |
-- |
-- |
3NE4122 |
0 |
125 |
1000 |
aR |
50 |
3NP52 |
1 |
120 |
-- |
-- |
-- |
3NE4124 |
0 |
160 |
1000 |
aR |
70 |
3NP52 |
1 |
150 |
-- |
-- |
-- |
3NE4327-0B |
2 |
250 |
800 |
aR |
150 |
3NP53 |
2 |
210 |
3NP54 |
3 |
220 |
3NE4330-0B |
2 |
315 |
800 |
aR |
240 |
3NP53 |
2 |
270 |
3NP54 |
3 |
285 |
3NE4333-0B |
2 |
450 |
800 |
aR |
2 x (30 x 5) |
3NP53 |
2 |
400 |
3NP54 |
3 |
420 |
3NE4334-0B |
2 |
500 |
800 |
aR |
2 x (30 x 5) |
3NP53 |
2 |
450 |
-- |
-- |
-- |
3NE4337 |
2 |
710 |
800 |
aR |
2 x (50 x 5) |
3NP53 |
2 |
600 |
-- |
-- |
-- |
1) Due to the mechanical stress on the relatively long fuse blades, SITOR 3NE41 semiconductor fuses should only be switched occasionally and only at zero current.
2) Permissible load currents for 3NE8...-0MK
3) 3NP1 fuse switch disconnectors may be operated at up to 1000 V AC/DC with the following restrictions: Degree of pollution 2 (instead of 3) / AC20 or DC20 – i.e. switching only without load
4) In the case of cyclic loads, the currents may have to be further reduced (precise values on request).
5) The fuse can also be operated at a higher rated uninterrupted current than the 630 A current of the 3NP54. However, in this case, the 3NP54 must not be switched under load (utilization category AC-20).
3NE8 (derating values)
SITOR semiconductor fuse data |
Permissible load currents of fuse when installed in 3NP5 for floor mounting |
||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Type 3NP5 |
Alternative type 3NP5 |
||||||||||
Type 1)2) |
Size |
Rated current In |
Rated voltage 3) |
Operational class |
Required conductor cross-section Cu |
Type |
Size |
Perm. load current 4) |
Alternative type |
Size |
Perm. load current5) |
A |
V AC |
mm2 |
|||||||||
3NE8015-1 |
00 |
25 |
690 |
gR |
4 |
3NP50 |
00 |
-- |
-- |
-- |
|
3NE8003-1 |
00 |
35 |
690 |
gR |
6 |
3NP50 |
00 |
-- |
-- |
-- |
|
3NE8017-1 |
00 |
50 |
690 |
gR |
10 |
3NP50 |
00 |
-- |
-- |
-- |
|
3NE8018-1 |
00 |
63 |
690 |
gR |
16 |
3NP50 |
00 |
-- |
-- |
-- |
|
3NE8020-1 |
00 |
80 |
690 |
aR |
25 |
3NP50 |
00 |
-- |
-- |
-- |
|
3NE8021-1 |
00 |
100 |
690 |
aR |
35 |
3NP50 |
00 |
-- |
-- |
-- |
|
3NE8022-1 |
00 |
125 |
690 |
aR |
50 |
3NP50 |
00 |
-- |
-- |
-- |
|
3NE8024-1 |
00 |
160 |
690 |
aR |
70 |
3NP50 |
00 |
-- |
-- |
-- |
1) Due to the mechanical stress on the relatively long fuse blades, SITOR 3NE41 semiconductor fuses should only be switched occasionally and only at zero current.
2) Permissible load currents for 3NE8...-0MK
3) 3NP1 fuse switch disconnectors may be operated at up to 1000 V AC/DC with the following restrictions: Degree of pollution 2 (instead of 3) / AC20 or DC20 – i.e. switching only without load
4) In the case of cyclic loads, the currents may have to be further reduced (precise values on request).
5) The fuse can also be operated at a higher rated uninterrupted current than the 630 A current of the 3NP54. However, in this case, the 3NP54 must not be switched under load (utilization category AC-20).
NOTE
If using smaller cross-sections, a considerably higher derating is required due to the lower heat dissipation.