silica filler housed in a fiberglass tube and plated endcaps.
An epoxy paint protects the fuse tube from the surround-
ing environment.
FEATURES:
• Standard Clip Center Lengths and Barrel Diameters.
The new line of Bussmann 15.5 kV medium voltage fuses
have standard clip center distances of 15 or 18 inches
and barrel diameters of 2 or 3 inches which allow fuses to
retrofit exisiting hardware.
• Blown 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 elements. 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 interrupt-
ing fault currents of 50,000A sym.
• Time Current Curves and Dimensional Data:
MV155F1CB series, see page 2;
MV155F1DB and MV155F1DC series, see page 3.
• Peak Arc Voltage Curves and Peak Let-Through
Data,
see page 4.
• Fuse Clips,
see page 4.
† To order with the optional striker pin, see Part Number Construction chart below.
Part Number Construction
Medium Voltage
Example
MV
Voltage Rating
155
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
B
A = 12 inches
B = 15 inches
C = 18 inches
Indication Type
X
X = Indicator only
S = Striker Pin
Ampere Rating
5E
2-26-03
SB03044
Form No. MV155
Page 1 of 5
Data Sheet: 6701
Bussmann
®
E-Rated Medium Voltage Fuses
For Transformer and Feeder Protection
15.5 kV - MV155F1CB Series
Time-Current Characteristics
Minimum Melt
AMPERE
RATING
5A
7A
10A
15A
20A
25A
30A
Time-Current Characteristics
Total Clearing
5A
7A
10A
15A
20A
25A
30A
MV155
100
100
AMPERE
RATING
10
10
TIME IN SECONDS
1
TIME IN SECONDS
1,000
7,000
100
10
1
.1
.1
.01
.01
1,000
7,000
Form No. MV155
Page 2 of 5
Data Sheet: 6701
CURRENT IN AMPERES
CURRENT IN AMPERES
MV155F1CBX
18.61"
17.77"
.21"
BUSSMANN
2.03"
.63"
Ø2.095"
INDICATOR
15.00"
CLIP CENTER
POSITION OF BLOWN
INDICATOR AFTER
OPERATING.
2-26-03
SB03044
100
10
Bussmann
®
E-Rated Medium Voltage Fuses
For Transformer and Feeder Protection
15.5 kV - MV155F1DB & MV155F1DC Series
Time-Current Characteristics
Minimum Melt
1000
MV155
Time-Current Characteristics
Total Clearing
1000
15A
20A
25A
30A
40A
50A
65A
80A
100A
125A
150A
175A
200A
50A
65A
80A
100A
100
100
10
10
TIME IN SECONDS
1
1
.1
.1
DOUBLE BARREL
FUSE ASSY.
SINGLE BARREL
FUSE ASSY.
TIME IN SECONDS
DOUBLE BARREL
FUSE ASSY.
SINGLE BARREL
FUSE ASSY.
.01
10000
20000
10
100
1000
1000
.01
100
10
CURRENT IN AMPERES
10000
20000
CURRENT IN AMPERES
MV155F1DBX
18.61"
17.77"
.21"
2.40"
.63"
BUSSMANN
Double Barrel
Dimensions
Ø2.96"
INDICATOR
Ø1.30"
Ø3.38"
15.00"
CLIP CENTER
POSITION OF BLOWN
INDICATOR AFTER
OPERATING.
125A
150A
175A
200A
3.50"
10A
15A
20A
25A
30A
40A
10A
6.68"
MV155F1DCX
21.61"
20.77"
.21"
BUSSMANN
2.40"
.63"
Ø2.96"
INDICATOR
Ø1.30"
Ø3.38"
18.00"
CLIP CENTER
POSITION OF BLOWN
INDICATOR AFTER
OPERATING.
2-26-03
SB03044
Form No. MV155
Page 3 of 5
Data Sheet: 6701
Bussmann
®
E-Rated Medium Voltage Fuses
For Transformer and Feeder Protection
15.5 kV - Peak Arc Voltage & Peak Let-Through Data
Max. Peak Let-Through Current Curves
MV155
MAXIMUM PEAK ARC VOLTAGE FOR
"E" RATED FULL RANGE POWER FUSE
(BUSSMANN)
B
100
50
10
MAXIMUM LET-THROUGH (Peak Kiloamperes)
50A
30&40A
25A
20A
15A
07&10A
05A
MAXIMUM PEAK ARC VOLTAGE (KV)
100
200A
175A
150A
125A
100A
80A
65A
40
30
20
1
A
10
.1
.1
1
AVAILABLE CURRENT IN KILOAMPERES (RMS Symmetrical)
10
0
0
5
10
15
20
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 only.
C
A
G
F
D
B
Form No. MV155
Page 4 of 5
Data Sheet: 6701
E
2-26-03
SB03044
Bussmann
®
E-Rated Medium Voltage Fuses
For Transformer and Feeder Protection
15.5 kV - Cross Reference Data
Catalog Number Cross Reference
Bussmann
MV155F1CBXxxxE
MV155F1DBXxxxE
MV155F1DCXxxxE
MV155F2DCXxxxE
Gould (New)
A155F1CORO-xxxE
A155F1DORO-xxxE
A155F1DORO-xxxE
A155F2DORO-xxxE
Gould (Old)
A1550X-xxxE-1B
A1550X-xxxE-1F
A1550X-xxxE-1D
A1550X-xxxE-1D
Westinghouse
----
15HLE-xxxE
----
----
----
9F62DDDxxx
----
----
General Electric
----
9F60FMHxxx
----
----
MV155
Bussmann Medium Voltage Cross Reference
Overall
Sym.
Length
kA
Manufacturer
18-3/4”
50
Bussmann
15.5 kV
17-3/100”
50
Gould†
18-3/4”
50
Bussmann
18-7/8”
40
Gould†
15.5 kV
3”
15”
18-7/8”
50
Westinghouse†
18-7/8”
40
General Electric†
3”
18”
21-3/4”
50
Bussmann
15.5 kV
21-3/4”
50
Gould†
† Gould, Westinghouse and General Electric are General Purpose Fuses.
kV
Dia.
2”
Clip
Center
15”
E Ratings Available
5
7
10 15
S S
S
S
S S
S
S
S
S
S
S
S = Single Barrel
D = Double Barrel
20
S
S
S
S
S
S
25
S
S
S
S
S
S
30
S
S
S
S
S
S
40
50
65
80
100 125 150 175
200 250 300 350 400 450
S
S
S
S
S
S
S
S
S
D
S
S
S
S
S
D
S
S
S
S
S
D
S
S
S
S
D
S
D
S
D
D
D
D
S
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
temperature 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
current 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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