UL/CSA Fuses
General Purpose
UL/CSA Fuses
Current Limiting
R-Rated Medium Voltage Fuses
For Motor Circuits
Medium Voltage R-Rated Fuses for 2.4 and 4.8kV Motors
Special
Purpose Fuses
List of Ratings
2.4kV System Voltage
Catalog Symbol
2.75 VFRHA 2R
2.75 VFRHA 3R
2.75 VFRHA 4R
2.75 VFRHA 6R
2.75 VKRHA 9R
2.75 VKRHA 12R
2.75 VKRHK 18R
2.75 VKRHK 24R
4.8kV System Voltage
5.5 VFNHA 2R
5.5 VFNHA 3R
5.5 VFNHA 4R
5.5 VFNHA 6R
5.5 VKNHA 9R
5.5 VKNHA 12R
5.5 VKNHK 18R
5.5 VKNHK 24R
5.5 VKNHK 30R
5.5 VKNHK 36R
5.5 VKNHK 40R
5.5 VKNHK 48R
Current Rating
Amps at 40°C
70
100
130
170
200
230
390
450
Figure
Number
Dimensions - in (mm)
3"
76.2mm
10.88"
276.0mm
0.63" max.
16.0mm
3"
76.2mm
1
Figure 1
Canadian
Fuses & Holders
2
3"
76.2mm
10.88"
276.0mm
0.63" max.
16.0mm
3"
76.2mm
Medium
Voltage Fuses
70
100
130
170
200
230
390
450
450
500
600
650
3
6.31"
160.0mm
Figure 2
4
3"
76.2mm
15.88"
403.0mm
0.63" max.
16.0mm
3"
76.2mm
Figure 3
Fuse Blocks,
Holders & Misc.
3"
76.2mm
15.88"
403.0mm
0.63" max.
16.0mm
3"
76.2mm
6.31"
160.0mm
Figure 4
Application
Section
Notes:
1. Interrupting rating - 80,000 amps asymmetrical 60Hz.
2. These fuses are dimensionally interchangeable with corresponding R-
Rated fuses produced by other leading North American manufacturers.
102
For additional information, visit www.edisonfuse.com
UL/CSA Fuses
Current Limiting
R-Rated Medium Voltage Fuses
For Motor Circuits
Circuit Protection
Time-Current Characteristics for 5.5kV and 2.75kV Fuses
Total Clear
18
24
30
3640
48
"R"
RA
TING
100
Minimum Melt
18
24
3036
40
48
"R"
RA
TING
9
12
UL/CSA Fuses
General Purpose
100
10
10
TIME IN SECONDS
12
2
3
4
6
2
3
4
6
9
Special
Purpose Fuses
1
TIME IN SECONDS
1
Canadian
Fuses & Holders
.1
.1
.01
100,000
10,000
1,000
100
.01
100,000
10,000
1,000
100
RMS SYMMETRICAL CURRENT IN AMPS
RMS SYMMETRICAL CURRENT IN AMPS
Medium
Voltage Fuses
Fuse Blocks,
Holders & Misc.
Application
Section
For additional information, visit www.edisonfuse.com
103
UL/CSA Fuses
Current Limiting
R-Rated Medium Voltage Fuses
For Motor Circuits
Peak Let-Through Current Curve (
5.5kV and 2.75kV Fuses)
100
48
40
36
30
24
18
12
9
6
4
3
2
"R"
RA
TING
UL/CSA Fuses
General Purpose
PEAK CURRENT (kA)
10
1
Special
Purpose Fuses
PROSPECTIVE CURRENT (SYM. RMS kA)
Application for HV Motor Circuit Fuses
The following table is a general guide only based on a
number of assumptions regarding the motor duty
application which are listed below. Contact Edison
Customer Satisfaction for specific application information.
The application tables are based on the following
assumptions:
FLA
Amps
17
22
28
33
44
55
67
78
89
111
133
155
177
200
222
244
266
311
355
399
422
444
488
–
–
–
–
–
–
–
2.4kV
FUSE
“R”
2R
2R
3R
3R
4R
6R
6R
9R
9R
12R
18R
18R
18R
18R
24
24R
24R
30R
36R
40R
40R
40R
48R
–
–
–
–
–
–
–
FLA
Amps
–
–
16
19
26
32
38
45
45
64
77
90
102
115
128
141
154
179
205
230
243
256
282
307
333
358
384
448
–
–
10
.1
1
.1
Motor Efficiency ---------- 90%
Motor Power Factor ----- 0.9
Run Up Time ------ 10 Secs.
Starting Method -- Full Voltage
Starting Current ---------- 6 x FLA Min. Fuse Size---- 1.3 x FLA
Starts/Hour ---------------- Max of 2/Hour
Canadian
Fuses & Holders
Application
Section
Hp
75
100
125
150
200
250
300
350
400
500
600
700
800
900
1000
1100
1200
1400
1600
1800
1900
2000
2200
2400
2600
2800
3000
3500
4000
4500
Amps
70
70
70
100
130
170
170
170
200
230
390
390
390
390
450
450
450
450
500
600
600
600
650
–
–
–
–
–
–
–
4.16kV
FUSE
“R”
–
–
2R
2R
3R
3R
4R
4R
4R
6R
9R
9R
9R
12R
18R
18R
18R
18R
18R
24R
24R
24R
30R
30R
36R
36R
36R
40R
–
–
Amps
–
–
70
70
100
100
130
130
130
170
200
200
230
230
390
390
390
390
390
450
450
450
450
450
500
500
500
600
–
–
FLA
Amps
–
–
–
17
22
28
33
39
44
55
67
78
89
100
111
122
133
155
177
200
211
222
244
266
288
311
333
388
444
500
4.8kV
FUSE
“R”
–
–
–
2R
2R
3R
3R
4R
4R
6R
6R
9R
9R
9R
12R
12R
18R
18R
18R
18R
18R
24R
24R
24R
30R
30R
36R
36R
40R
48R
Amps
–
–
–
70
70
100
100
130
130
170
170
200
200
200
230
230
390
390
390
390
390
450
450
450
450
450
500
500
600
650
Fuse Blocks,
Holders & Misc.
Medium
Voltage Fuses
Contact Edison Customer Satisfaction for applications regarding other operating conditions.
104
For additional information, visit www.edisonfuse.com
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