Medium Voltage Fuses
E-rated fuses for transformers and feeders
5.5kV Catalog Numbers
MV055 and
MV155
Min
Max
Dimensions (in)*
Catalog
Numbers
Amp
Rating
Melt
Clear
Clip
I2t
I2t
Length Dia. Center Barrels
MV055F1CAX5E
MV055F1CAX7E
MV055F1CAX10E
MV055F1CAX15E
MV055F1CAX20E
MV055F1CAX25E
MV055F1CAX30E
MV055F1CAX40E
MV055F1CAX50E
MV055F1CAX65E
MV055F1DAX10E
MV055F1DAX15E
MV055F1DAX20E
MV055F1DAX25E
MV055F1DAX30E
MV055F1DAX40E
MV055F1DAX50E
MV055F1DAX65E
MV055F1DAX80E
MV055F1DAX100E
MV055F1DAX125E
MV055F1DAX150E
MV055F1DAX175E
MV055F1DAX200E
MV055F2DAX250E
MV055F2DAX300E
MV055F2DAX350E
MV055F2DAX400E
MV055F2DAX450E
1” = 25.4mm
5
7
180
2,400 15.75
2
12
1
Specifications
850
850
8,000
8,000
Description: E-rated
medium, voltage current-
limiting fuses: for trans-
former and feeder protection.
10
15
2,070
11,000
23,000
31,000
45,000
45,000
90,000
181,000
20
2,370
2
25
4,650
30
9,490
40
9,490
Dimensions: See Catalog Numbers table.
50
13,600
30,700
850
Construction: Silver ribbon element surrounded by silica
filler housed in a fiberglass tube and plated endcaps. An
epoxy paint protects the fuse tube from the surrounding envi-
ronment.
65
10
8,000 15.75
3
12
1
15
2,070
12,000
23,000
31,000
45,000
45,000
90,000
181,000
270,000
580,000
1
20
2,370
25
4,650
Ratings:
12
15.75
30
9,490
40
9,490
Volts: — 5.5kV (5-450A)
— 15.5kV (5-200A)
Amps: — 5-450A (5.5kV)
— 5-200A (15.5kV)
IR: — 50kA Sym. Max
50
13,600
30,700
54,600
116,200
167,400
218,700
227,900
297,600
669,600
874,800
911,600
1,190,400
1,555,000
65
80
3
3
100
125
150
175
200
250
300
350
400
450
600,000 15.75
786,000
12
12
1
2
1,100,000
Agency Information: Meets E requirements per ANSI
C37.46, Meets full range requirements per ANSI C37.40.
1,520,000
2,400,000 15.75
3,149,000
3
MV055 Features and Benefits
2
4,376,000
• Standard clip center distance of 12 inches with 2 and 3 inch
barrel diameters for retrofitting in existing hardware
• Open fuse indicator for ease in troubleshooting
• Full range rating with 50,000 Interrupting Rating
• Double pulsed at 90% of minimum I2t to establish manufac-
turing reliability
6,071,000
9,796,000
Data Sheet: 6700
15.5kV Catalog Numbers
Min
Max
Dimensions*
Clip
Length Dia. Center Barrels
Catalog
Numbers
Amp
Rating
Melt
Clear
I2t
I2t
MV055 Typical Applications
• 5.0 kV Transformer Primary Protection
• 5.0 kV Feeder Circuit Protection
• 5.0 kV Voltage Switches
MV155F1CBX5E
MV155F1CBX7E
MV155F1CBX10E
MV155F1CBX15E
MV155F1CBX20E
MV155F1CBX25E
MV155F1CBX30E
MV155F1DBX10E
MV155F1DBX15E
MV155F1DBX20E
MV155F1DBX25E
MV155F1DBX30E
MV155F1DBX40E
MV155F1DBX50E
MV155F1DBX65E
MV155F1DBX80E
MV155F1DBX100E
MV155F2DBX125E
MV155F2DBX150E
MV155F2DBX175E
MV155F2DBX200E
MV155F1DCX65E
MV155F1DCX80E
MV155F1DCX100E
MV155F2DCX125E
MV155F2DCX150E
MV155F2DCX175E
MV155F2DCX200E
*1” = 25.4mm.
5
7
180
2,900 18.75
8,000
15
1
850
850
10
8,000
15
2,070
12,000
2
• 5.0 kV Metal-enclosed Switchgear
20
2,370
23,000
25
4,650
31,000
MV155 Features and Benefits
30
9,490
45,000
10
850
8,000 18.75
12,000
3
15
15
1
1
• Standard clip center distance of 12 inches with 2 and 3 inch
barrel diameters for retrofitting in existing hardware
• Open fuse indicator for ease in troubleshooting
• Full range rating with 50,000 Interrupting Rating
• Double pulsed at 90% of minimum I2t to establish manufac-
turing reliability
15
2,070
20
2,370
23,000
18.75
25
4,650
31,000
45,000
30
9,490
40
9,490
45,000
50
13,600
30,700
54,600
116,200
123,000
218,700
314,700
465,100
30,700
54,600
116,200
123,000
218,700
314,700
465,100
90,000
65
181,000
270,000
600,000
80
MV155 Typical Applications
• 15.0 kV Transformer Primary Protection
• 15.0 kV Feeder Circuit Protection
• 15.0 kV Voltage Switches
100
125
150
175
200
65
677,000 18.75
1,287,000
3
3
15
18
2
2
1,689,000
2,405,000
• 15.0 kV Metal-enclosed Switchgear
181,000 21.75
270,000
3
3
1
1
80
100
125
150
175
200
600,000
677,000 21.75
18
18
2
21.75
1,287,000
1,689,000
2,405,000
2
Data Sheet: 6701
For product Data Sheets, visit www.cooperbussmann.com/products/datasheet.asp
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