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 I
2
t 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 I
2
t, 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.
† To order fuses with the optional striker pin, see Part Number Construction chart below.
Part Number Construction
Medium Voltage
Example
MV
Voltage Rating
055
055 = 5.5 KV
155 = 15.5 KV
F
F = Full Range
Number of Barrels
1
1
2
Barrel Diameter
C
C = 2 inches
D = 3 inches
Clip Center Distance
A
A = 12 inches
B = 15 inches
C = 18 inches
Indication Type
X
X = Indicator only
S = Striker Pin
Ampere Rating
5E
8-28-02
SB02371
Form No. MV055
Page 1 of 5
Data Sheet: 6700
Bussmann
®
E-Rated Medium Voltage Fuses
For Transformer and Feeder Protection
5.5 kV - MV055F1CA Series
Time-Current Characteristics
Minimum Melt
1000
05A
07A
40A
50A
10A
20A
25A
30A
15A
65A
MV055
Time-Current Characteristics
Total Clear
1000
10A
15A
20A
25A
30A
05A
40A
50A
07A
65A
100
100
10
TIME IN SECONDS
TIME IN SECONDS
1
10
1
.1
.1
.01
10
100
1000
10000
.01
10
100
1000
10000
CURRENT IN AMPERES
CURRENT IN AMPERES
MV055F1CAX
15.61"
14.77"
.21"
BUSSMANN
2.03"
INDICATOR
.63"
Ø2.095"
12.00"
CLIP CENTER
POSITION OF BLOWN
INDICATOR AFTER
OPERATING.
8-28-02
SB02371
Form No. MV055
Page 2 of 5
Data Sheet: 6700
Bussmann
®
E-Rated Medium Voltage Fuses
For Transformer and Feeder Protection
5.5 kV - MV055F1DA Series
Time-Current Characteristics
Minimum Melt
1000
125A
150A
175A
200A
250A
300A
350A
400A
450A
65A
80A
100A
MV055
Time-Current Characteristics
Total Clear
1000
CC208-2
40A
50A
100A
100
100
TIME IN SECONDS
TIME IN SECONDS
10
10
1
1
.1
.1
DOUBLE BARREL
FUSE ASSY.
SINGLE BARREL
FUSE ASSY.
DOUBLE BARREL
FUSE ASSY.
SINGLE BARREL
FUSE ASSY.
.01
100
1000
10000
100000
10
.01
10
100
1000
10000
100000
CURRENT IN AMPERES
MV055F1DAX
15.61"
14.77"
.21"
BUSSMANN
Double Barrel Dimensions
2.40"
.63"
Ø2.96"
Ø1.30"
INDICATOR
3.50"
6.68"
Ø3.38"
12.00"
CLIP CENTER
POSITION OF BLOWN
INDICATOR AFTER
OPERATING.
125A
150A
175A
200A
250A
300A
350A
400A
450A
10A
20A
25A
30A
15A
10A
15A
20A
25A
30A
40A
50A
65A
80A
CURRENT IN AMPERES
8-28-02
SB02371
Form No. MV055
Page 3 of 5
Data Sheet: 6700
Bussmann
®
E-Rated Medium Voltage Fuses
For Transformer and Feeder Protection
5.5 kV - Peak Arc Voltage & Peak Let-Through Data
Max. Peak Let-Through Current Curves
100
MV055
B
MAXIMUM PEAK ARC VOLTAGE FOR
“E” RATED FULL RANGE POWER FUSE
(BUSSMANN)
50
450A
400A
300A
250A
200A
175A
125A
100A
80A
65A
50A
40A
30A
25A
20A
15A
07&10A
05A
350A
150A
40
MAXIMUM PEAK ARC VOLTAGE (KV)
100
10
MAXIMUM LET-THRU (Peak Kiloamperes)
30
1
20
A
10
.1
.1
1
10
AVAILABLE CURRENT IN KILOAMPERES (RMS Symmetrical)
0
10
15
20
0
5
F
D
B
E
CIRCUIT VOLTAGE (KV)
Recommended Fuse Clips for Medium Voltage Fuses
Part
No.
Fuse
Clip Dimensions
Diameter
A
B
C
D
E
F
G
A3354710
A3354730
2”
3”
3.74”
4.13”
1.97”
2.44”
2.00”
3.00”
1.18” 4.53” 1.50” .39”
1.18” 5.63” 1.50” .39”
Fuseclips are for single barrel applications up to 200E.
C
A
G
8-28-02
SB02371
Form No. MV055
Page 4 of 5
Data Sheet: 6700
Bussmann
®
E-Rated Medium Voltage Fuses
For Transformer and Feeder Protection
5.5 kV - Cross Reference Data
MV055
Catalog Number Cross Reference
Bussmann
MV055F1CAXxxxE
MV055F1DAXxxxE
MV055F2DAXxxxE
Gould (New)
A055F1CORO-xxxE
A055F1DORO-xxxE
A055F2DORO-xxxE
Gould (Old)
A550X-xxxE-1B
A550X-xxxE-1F
A550X-xxxE-1
Westinghouse
----
5HLE-xxxE-1
----
----
9F60FJDxxx
----
General Electric
----
9F62DCBxxx
----
Bussmann Medium Voltage Cross Reference
Overall
Sym.
E Ratings Available
Length
kA
Manufacturer 5
7
10 15
15-3/4”
50
Bussmann
S S
S
S
5.5 kV
2”
12”
14-11/100” 63
Gould†
S S
S
S
15-3/4”
50
Bussmann
S
S
15-7/8”
63
Gould†
S
S
5.5 kV
3”
12”
15-7/8”
63
Westinghouse†
15-7/8”
63
General Electric†
*Single barrel available as JCU-250E
† Gould, Westinghouse and General Electric are General Purpose Fuses
kV
Dia.
Clip
Center
S = Single Barrel
D = Double Barrel
20
S
S
S
S
25
S
S
S
S
30
S
S
S
S
S
S
40
S
S
S
S
S
S
50
S
S
S
S
S
S
65
S
S
S
S
S
S
80
100 125 150 175
200 250 300 350 400 450
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
D*
D
S
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
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.
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.
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