This product group covers current limiting fuses with dimen-
sions to DIN 43.625 and performance in compliance with
IEC 282-1.
Advantages of Edison High Voltage Current -
Limiting Fuse
The low power dissipation of Edison fuses ensures low tem-
perature rise of switchgear in which they are incorporated.
The elements use the ‘M’ (metallurgical) effect, similar to
that used in low voltage fuses. This ensures that, with melt-
ing on long time overloads, excessive temperatures are not
reached and damage to switchgear components, such as
epoxy encapsulating enclosures, is thus prevented. Fuses
of Continental European manufacture which in general do
not employ this feature are not only hotter running by com-
parison but also usually need to employ a higher current rat-
ing of fuse for the same service; thus an Edison 40A fuse is
equivalent in terms of thermal performance to many
Continental European types of 63A rating.
Edison fuses exhibit considerable limitation of current and
I
2
t under short circuit conditions. The stress on circuit com-
ponents is thereby minimized and the reduction of energy
release at the fault reduces fire risks.
Switching (arc) voltages are appreciably less than permitted
values and fall with lower values of recovery voltage. The
use of, for example, 12 kV fuse on 6/7.2 kV systems is
therefore permissible.
Striker Characteristics
The spring operated striker pin has a travel and energy out-
put in compliance with the requirements of DIN 43625 and
IEC 282-1.
Travel is approx. 26mm
Energy Output is approx. 0.6 joule
Force/Travel Output Characteristics
60
50
40
FORCE (N)
30
20
10
0
0
5
10
15
TRAVEL (mm)
20
25
30
Current Ratings
These are in accordance with the R10 and, in some cases,
the R20 series of preferred numbers.
131
HIGH VOLTAGE DIN DISTRIBUTION
3.6 kV – 36 kV FUSES
Table of Ratings and Dimensions
KV
Catalog No.
3.6ADOSJ(amp)
3.6WDOSJ(amp)
3.6WFOSJ(amp)
3.6WFOSJ(amp)
3.6ADLSJ(amp)
3.6WDLSJ(amp)
3.6WFLSJ(amp)
3.6WKLSJ(amp)
7.2SDLSJ(amp)
7.2SDLSJ(amp)
7.2SFLSJ(amp)
7.2SFLSJ(amp)
7.2WKMSJ(amp)
7.2WKMSJ(amp)
12SDLSJ(amp)
12SDLSJ(amp)
12SFLSJ(amp)
12SKLSJ(amp)
12SKLSJ(amp)
17.5SDLSJ(amp)
17.5SDLSJ(amp)
17.5SFLSJ(amp)
17.5SFLSJ(amp)
17.5SDMSJ(amp)
17.5SDMSJ(amp)
17.5SFMSJ(amp)
17.5SFMSJ(amp)
15.5SFMSJ(amp)
15.5SKMSJ(amp)
24SFMSJ(amp)
25SFMSJ(amp)
27.6SDMSJ(amp)
27.6SDMSJ(amp)
27.6SFMSJ(amp)
27.6SFMSJ(amp)
36SDQSJ(amp)
36SDQSJ(amp)
36SFQSJ(amp)
36SFQSJ(amp)
Rating Amps
6.3, 10, 16, 20, 25, 31.5, 40
50, 63, 80, 100, 125
160
200
6.3, 10, 16, 20, 25, 31.5, 40
50, 63, 80, 100, 125
160, 200
250, 315, 400
6.3, 10, 16, 20, 25, 31.5
40, 50, 63
80, 100
125, 160
200, 225
250, 315, 355
6.3, 10, 16, 20, 25, 31.5
40, 50, 63
50, 63, 80, 100
125
160, 200
6.3, 10, 16, 20
25, 31.5, 40, 50
31.5
40, 50
6.3, 10, 16
20, 25, 31.5, 40
40, 50
63, 80
100
125
40, 50, 63, 71
40, 50, 63, 71
6.3, 10, 16
20, 25
31.5, 40
50
31.5, 6.3, 10, 16
20, 25
31.5, 40
50, 56
Dimensions Inches and mm
Diameter x Length
2.00” x 7.56”
51 x 192
3.00” x 7.56”
76 x 192
2.00” x 11.50”
51 x 292
3.00” x 11.50”
76 X 292
2.00” x 11.50”
51 x 292
3.00” x 11.50”
76 x 292
3.00” x 17.41”
76 x 442
2.00” x 11.50”
51 x 292
3.00” x 11.50”
76 x 292
3.50” x 11.50”
88 x 292
2.00” x 11.50”
51 x 292
3.00” x 11.50”
76 x 292
2.00” x 17.41”
51 x 442
3.00” x 17.41”
76 x 442
3.00” x 17.41”
76 x 442
3.00” x 17.41”
76 x 442
3.00” x 17.41”
76 x 442
2.00” x 17.41”
51 x 442
3.00” x 17.41”
76 x 442
2.00” x 21.16”
51 x 537
3.00” x 21.16”
51 x 537
Type
3.6/7.2
50KA
10/12
IR
RMS Symm
3.6
10/12
40KA
20/24
7.2
12
10/12
50KA
10/12
17.5
35.5KA
20/24
15.5
24
25
20/24
20/24
20/24
25KA
50KA
25KA
27.6
20/24
25KA
36
30/36
35.5KA
Dimensions (Inches and mm)
STRIKER IN
OPERATED POSITION
DIAMETER
.59"
15.0mm
1.77"
45.0mm
LENGTH
For Diameter and Length Dimensions See Table Above
1.02"
1.34"
34.0mm 26.0mm
132
HIGH VOLTAGE DIN DISTRIBUTION
3.6 kV – 36 kV FUSES
Time-Current Characteristics–Average
For 7.2 kV Fuses:
7.2SDLSJ
7.2SFLSJ
7.2WKMSJ
For 17.5 kV Fuses:
17.5SDLSJ
17.5SFLSJ
17.5SDMSJ
17.5SFMSJ
15.5SFMSJ
15.5SKMSJ
15.5kV
ONLY
200 225
250
315
355
25
40
31.5
10
16
20
25
31.5
40
50
63
80
100
125
160
1,000
1,000
100
100
10
TIME IN SECONDS
10
TIME IN SECONDS
1
1
.1
.1
.01
10,000
20,000
1,000
10
100
.01
1,000
10,000
10
100
RMS SYMMETRICAL CURRENT IN AMPERES
RMS SYMMETRICAL CURRENT IN AMPERES
80
100
125
6.3
6.3
10
16
20
50
AMPERE
RATING
63
AMPERE
RATING
133
HIGH VOLTAGE DIN DISTRIBUTION FUSES
Average Time/Current-Curve
For 24-27.6 kV Fuses:
27.6SDMSJ
27.6SFMSJ
25SFMSJ
24SFMSJ
16
25
40
31.5
63
Din Fuse Clips
Suitable for use with all DIN HV fuses having 45mm end fittings.
A
.99"
25.0mm
1,000
AMPERE
RATING
6.3
10
20
50
71
4.06"
103mm
100
TIME IN SECONDS
10
A
.43"
10.8mm
Part No. 2703
For Standard Duty (up to 200A)
1
.38"
9.5mm
1.5"
38.1mm
.1
4.50"
114.3mm
.01
1,000
10,000
10
100
1.77"
45.0mm
3.50"
88.9mm
RMS SYMMETRICAL CURRENT IN AMPERES
2.5"
63.5mm
1.19"
30.2mm
Part No. A3354745
Heavy Duty
134
HIGH VOLTAGE DIN DISTRIBUTION FUSES
General Guide to the Selection of Fuses.
For use in the Primary Circuit of Three-Phase Transformers
Transformer
3ph kVA
Fuse kV
System kV
25
30
40
45
63
75
100
112
125
150
200
225
300
400
450
500
600
750
1000
1250
1500
2000
2500
Fuse Reference and Rating in Amps
3.6kV
7.2kV
2.4kV
4.16kV
6.9kV
ADLSJ 16
ADLSJ 16
ADLSJ 20
ADLSJ 20
ADLSJ 31.5
ADLSJ 40
ADLSJ 40
ADLSJ 40
WDLSJ 50
WDLSJ 50
WDLSJ 63
WDLSJ 80
WDLSJ 100
WDLSJ 125
WFLSJ 160
WFLSJ 160
WFLSJ 200
WKLSJ 250
WKLSJ 315
WKLSJ 400
–
–
–
SDLSJ 10
SDLSJ 10
SDLSJ 16
SDLSJ 16
SDLSJ 20
SDLSJ 25
SDLSJ 25
SDLSJ 31.5
SDLSJ 31.5
SDLSJ 40
SDLSJ 50
SDLSJ 50
SDLSJ 63
SDLSJ 80
SFLSJ 80
SFLSJ 100
SFLSJ 125
SFLSJ 160
WKMSJ 200
WKMSJ 250
WKMSJ 315
–
–
SDLSJ 6.3
SDLSJ 6.3
SDLSJ 10
SDLSJ 10
SDLSJ 16
SDLSJ 16
SDLSJ 20
SDLSJ 20
SDLSJ 25
SDLSJ 25
SDLSJ 31.5
SDLSJ 40
SDLSJ 40
SDLSJ 50
SDLSJ 63
SDLSJ 63
SFLSJ 80
SFLSJ 80
SFLSJ 125
SFLSJ 160
SFLSJ 160
WKMSJ 250
WKMSJ 315
12kV
10kV
SDLSJ 6.3
SDLSJ 6.3
SDLSJ 6.3
SDLSJ 6.3
SDLSJ 10
SDLSJ 10
SDLSJ 10
SDLSJ 16
SDLSJ 16
SDLSJ 16
SDLSJ 20
SDLSJ 20
SDLSJ 25
SDLSJ 31.5
SDLSJ 40
SDLSJ 40
SFLSJ 50
SFLSJ 63
SFLSJ 80
SFLSJ 100
SKLSJ 125
–
–
12.47kV
13.2kV
17.5kV
13.8kV
15.5kV
20kV
24kV
25kV
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 10
SDMSJ 10
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 6.3
SDMSJ 6.3
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 6.3
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 6.3
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 16
SDMSJ 16
SDMSJ 16
SDMSJ 10
SDMSJ 10
SDMSJ 10
SDMSJ 16
SDMSJ 16
SDMSJ 16
SDMSJ 16
SDMSJ 10
SDMSJ 10
SDMSJ 16
SDMSJ 16
SDMSJ 16
SDMSJ 16
SDMSJ 10
SDMSJ 10
SDMSJ 20
SDMSJ 20
SDMSJ 20
SDMSJ 20
SDMSJ 16
SDMSJ 10
SDMSJ 31.5
SDMSJ 25
SDMSJ 25
SDMSJ 20
SDMSJ 20
SDMSJ 20
SDMSJ 31.5
SDMSJ 31.5
SDMSJ 31.5
SDMSJ 25
SDMSJ 20
SDMSJ 20
SDMSJ 31.5
SDMSJ 31.5
SDMSJ 31.5
SDMSJ 31.5
SDMSJ 25
SDMSJ 20
SDMSJ 40
SDMSJ 40
SDMSJ 40
SDMSJ 31.5
SDMSJ 25
SDMSJ 20
SFMSJ 50SDMSJ 50
SDMSJ 40
SDMSJ 40
SDMSJ 31.5
SDMSJ 25
SFMSJ 63SFMSJ 63
SFMSJ 63
SFMSJ 50
SFMSJ 40
SDMSJ 31.5
SFMSJ 80SFMSJ 80
SFMSJ 80
SFMSJ 63
SFMSJ 50
SFMSJ 40
SFMSJ 100*
SFMSJ 100*
SFMSJ 80
SFMSJ 80
SFMSJ 63
SFMSJ 50
SKMSJ 125*
SKMSJ 125*
SKMSJ 125*
SFMSJ 100*
SFMSJ 71
–
–
–
–
SKMSJ 125*
–
–
*Fuse rated 15.5kV max.
Selection of these fuses has been based on a compromise between the following:
1.The fuse should withstand transformer magnetizing inrush currents, taken as 12 times full load current for 0.1 seconds.
2.The fuse should discriminate with the highest rating of the secondary fuse likely to be used.
3.The fuse should operate reasonably quickly in the event of a transformer inter-turn fault or a fault in the secondary terminal zone of the transformer.
NOTES:
A.In general, the recommendations apply equally to the use of fuse in open air or in an encapsulated enclosure, since “1” and “2” above dictate the use of a fuse cur-
rent rating sufficiently above the transformer current rating to nullify any adverse thermal affect of encapsulation. However, if the transformer is subjected to long
time overcurrents, a higher rate of fuse may be required.
B. The above recommendations are not generally applicable to transformers feeding motor circuits with starting currents in excess of the rated current of the fuse. In
this event, please consult your local Edison office.
C. Recommendations for other voltages are available on request.
D. While the above recommendations give a good general guide, recommendations for specific cases will be sent on receipt of full details of the application.
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