8-28-02 SB02371
E-Rated Medium Voltage Fuses MV055
For Transformer and Feeder Protection
5.5 kV
Form No. MV055
Page 1 of 5
Data Sheet: 6700
Bussmann®
CATALOG SYMBOL: MV055
E-RATED MEDIUM VOLTAGE FUSES:
Meets E requirements per ANSI C37.46
Meets Full Range requirements per ANSI C37.40
FOR TRANSFORMER AND FEEDER PROTECTION
VOLTAGE RATING: 5.5 KV
INTERRUPTING RATING: 50KA Maximum Sym.
CURRENT LIMITING
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 environment.
AGENCY INFORMATION: UL pending.
FEATURES:
•Standard Clip Center Lengths and Barrel Diameters.
The new line of Bussmann medium voltage fuses have a stan-
dard clip center distance of 12 inches and barrel diameters of 2
or 3 inches which allow fuses to retrofit exisiting hardware.
•Open Fuse Indication with Indicator.
•100% Tested for Reliability. All medium voltage fuses are
pulsed twice with 90% of their minimum melt I2t to guarantee
undamaged elements. This test does not affect undamaged ele-
ments. A damaged element completely opens when subjected
to 90% of the minimum melt I2t, allowing it to be detected by a
resistance check.
•Full Range Fuses. Bussmann medium voltage fuses provide
full range protection and are capable of interrupting fault
currents up to 50,000A sym.
•Time Current Curves and Dimensional Data:
MV055F1CA series , see page 2;
MV055F1DA series, see page 3.
• Peak Arc Voltage Curves, and Peak Let-Through Data,
see page 4.
•Fuse Clips, see page 4.
Part Number Construction
Medium Voltage Voltage Rating Number of Barrels Barrel Diameter Clip Center Distance Indication Type Ampere Rating
Example MV 055 F 1 C A X 5E
055 = 5.5 KV F = Full Range 1 C = 2 inches A = 12 inches X = Indicator only
155 = 15.5 KV 2 D = 3 inches B = 15 inches S = Striker Pin
C = 18 inches
Electrical Characteristics
Ampere Min. Melt Max. Clear Physical Size
Part Number †Rating I2tI
2t Length Dia. Clip Center Barrels
MV055F1CAX5E 5A 180 2400
MV055F1CAX7E 7A 850 8000
MV055F1CAX10E 10A 850 8000
MV055F1CAX15E 15A 2070 11000
MV055F1CAX20E 20A 2370 23000 15.75 2 12 1
MV055F1CAX25E 25A 4650 31000
MV055F1CAX30E 30A 9490 45000
MV055F1CAX40E 40A 9490 45000
MV055F1CAX50E 50A 13600 90000
MV055F1CAX65E 65A 30700 181000
MV055F1DAX10E 10A 850 8000
MV055F1DAX15E 15A 2070 12000
MV055F1DAX20E 20A 2370 23000
MV055F1DAX25E 25A 4650 31000
MV055F1DAX30E 30A 9490 45000 15.75 3 12 1
MV055F1DAX40E 40A 9490 45000
MV055F1DAX50E 50A 13600 90000
MV055F1DAX65E 65A 30700 181000
MV055F1DAX80E 80A 54600 270000
MV055F1DAX100E 100A 116200 580000
MV055F1DAX125E 125A 167400 600000
MV055F1DAX150E 150A 218700 786000
MV055F1DAX175E 175A 227900 1100000 15.75 3 12 1
MV055F1DAX200E 200A 297600 1520000
MV055F2DAX250E 250A 669600 2400000
MV055F2DAX300E 300A 874800 3149000
MV055F2DAX350E 350A 911600 4376000 15.75 3 12 2
MV055F2DAX400E 400A 1190400 6071000
MV055F2DAX450E 450A 1555000 9796000
†To order fuses with the optional striker pin, see Part Number Construction chart below.
E-Rated Medium Voltage Fuses MV055
For Transformer and Feeder Protection
5.5 kV - MV055F1CA Series
Form No. MV055
Page 2 of 5
Data Sheet: 6700
Bussmann®
1
.01
100
10
1000
1000
100
10
.1
10000
CURRENT IN AMPERES
TIME IN SECONDS
07A
05A
65A
50A
40A
30A
25A
20A
15A
10A
.1
10
100
1000
1000
10
100
.01
1
10000
05A
07A
65A
50A
40A
30A
25A
20A
15A
10A
TIME IN SECONDS
CURRENT IN AMPERES
Time-Current Characteristics
Minimum Melt Time-Current Characteristics
Total Clear
.63"
12.00"
Ø2.095"
2.03"
14.77"
.21"
15.61"
POSITION OF BLOWN
INDICA TOR AFTER
OPERATING.
CLIP CENTER
BUSSMANN
INDICATOR
MV055F1CAX
8-28-02 SB02371
E-Rated Medium Voltage Fuses MV055
For Transformer and Feeder Protection
5.5 kV - MV055F1DA Series
Form No. MV055
Page 3 of 5
Data Sheet: 6700
Bussmann®
TIME IN SECONDS
CURRENT IN AMPERES
.1
10
100
1000
.01
1
100000
10000
1000
100
10
10A
15A
20A
25A
30A
40A
50A
65A
80A
100A
125A
150A
175A
200A
250A
300A
350A
400A
450A
DOUBLE BARREL
FUSE ASSY.
SINGLE BARREL
FUSE ASSY.
CC208-2
TIME IN SECONDS
CURRENT IN AMPERES
.1
10
100
1000
.01
1
100000
10000
1000
10
100
SINGLE BARREL
FUSE ASSY.
DOUBLE BARREL
FUSE ASSY.
10A
15A
20A
25A
30A
40A
50A
65A
80A
100A
125A
150A
175A
200A
250A
300A
350A
400A
450A
Time-Current Characteristics
Minimum Melt Time-Current Characteristics
Total Clear
.63"
Ø2.96"
2.40"
Ø3.38"
14.77"
12.00"
15.61"
.21"
Ø1.30"
POSITION OF BLOWN
INDICA TOR AFTER
OPERATING.
CLIP CENTER
BUSSMANN
INDICATOR
MV055F1DAX
3.50" 6.68"
Double Barrel Dimensions
8-28-02 SB02371
E-Rated Medium Voltage Fuses MV055
For Transformer and Feeder Protection
5.5 kV - Peak Arc Voltage & Peak Let-Through Data
Form No. MV055
Page 4 of 5
Data Sheet: 6700
Bussmann®
1
AVAILABLE CURRENT IN KILOAMPERES (RMS Symmetrical)
MAXIMUM LET-THRU (Peak Kiloamperes)
100
10
.1.1 110
100
15A
20A
25A
40A
50A
65A
80A
100A
07&10A
05A
125A
175A
450A
400A
300A
150A
350A
30A
200A
250A
A
B
MAXIMUM PEAK ARC VOLTAGE (KV)
50
40
CIRCUIT VOLTAGE (KV)
30
20
10
0
0
5
10
15
20
MAXIMUM PEAK ARC VOLTAGE FOR
“E” RATED FULL RANGE POWER FUSE
(BUSSMANN)
Max. Peak Let-Through Current Cur ves
Recommended Fuse Clips for Medium Voltage Fuses
Part Fuse Clip Dimensions
No. Diameter A B C D E F G
A3354710 2” 3.74” 1.97” 2.00” 1.18” 4.53” 1.50” .39”
A3354730 3” 4.13” 2.44” 3.00” 1.18” 5.63” 1.50” .39”
Fuseclips are for single barrel applications up to 200E.
C
B
A
G
E
F
D
8-28-02 SB02371
E-Rated Medium Voltage Fuses MV055
For Transformer and Feeder Protection
5.5 kV - Cross Reference Data
Bussmann®
Catalog Number Cross Reference
Bussmann Gould (New) Gould (Old) Westinghouse General Electric
MV055F1CAXxxxE A055F1CORO-xxxE A550X-xxxE-1B ---- ---- ----
MV055F1DAXxxxE A055F1DORO-xxxE A550X-xxxE-1F 5HLE-xxxE-1 9F60FJDxxx 9F62DCBxxx
MV055F2DAXxxxE A055F2DORO-xxxE A550X-xxxE-1 ---- ---- ----
Bussmann Medium Voltage Cross Reference
Clip Overall Sym. E Ratings Available S = Single Barrel D = Double Barrel
kV Dia. Center Length kA Manufacturer 5 7 10 15 20 25 30 40 50 65 80 100 125 150 175 200 250 300 350 400 450
5.5 kV 2” 12” 15-3/4” 50 Bussmann S S S S S S S S S S
14-11/100” 63 Gould† S S S S S S S S S S
15-3/4” 50 Bussmann S S S S S S S S S S S S S S D* D D D D
15-7/8” 63 Gould† S S S S S S S S S S S S S S D D D D D
5.5 kV 3” 12” 15-7/8” 63 Westinghouse† S S S S S S S S S S S D D D D
15-7/8” 63 General Electric† S S S S S S S S S S D D D D D
*Single barrel available as JCU-250E
† Gould, Westinghouse and General Electric are General Purpose Fuses
Form No. MV055
Page 5 of 5
Data Sheet: 6700
The only controlled copy of this Data Sheet is the electronic read-only version located on the Bussmann Network Drive. All other copies of this BIF document are by definition uncontrolled. This bulletin is intended to clear-
ly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right, without notice, to change design or construction of any prod-
ucts and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected,
it should be tested by the user in all possible applications.
Current-limiting medium voltage fuses are classified into three categories:
Full Range - defined by ANSI as “a fuse capable of interrupting all currents from the maximum rated interrupting current down to the
minimum continuous current that causes melting of the fusible element(s), when the fuse is applied at the maximum ambient tempera-
ture specified by the manufacturer.” It is able to interrupt any normal 60 cycle current that will melt its element.
General Purpose - defined by ANSI C37.40 as “a fuse capable of interrupting all currents from the maximum rated interrupting cur-
rent down to the current that causes melting of the fusible element in one hour.” Not all currents fall within this range. It is possible to
receive an overcurrent lower than the value given by the one hour criterion.
Back-up - defined by ANSI C37.40 as “a fuse capable of interrupting all currents from the maximum rated interrupting current down to
the rated minimum interrupting current.” The minimum rated interrupting current is the lowest current that the fuse will be able to clear
properly. This creates a need to place a low current interrupting device in series with the back-up rated fuse.
All Bussmann MV series medium voltage fuses are E-rated and offer Full Range Protection.
8-28-02 SB02371
