The H-J Family of Companies
Current Limiting Fuses
The H-J Family of Companies
3010 High Ridge Blvd.
High Ridge, Mo. 63049 USA
+1-636-677-3421
[email protected]
www.h-j.com
Current Limiting Fuses
2
Transformer Protection
In recent years, the electric utility industry has become
increasingly aware of the need for improved protection of
individual transformers against high-fault currents. The
current-limiting and energy-limiting characteristics of
Current Limiting Fuses are such that they prevent disruptive
transformer failure by limiting the fault energy to a value the
protected equipment can easily withstand.
To help this function, H-J offers a complete line of oil-
submersible Current Limiting Fuses, applied in series with
various under-oil expulsion fuses to provide nearly complete
transformer protection.
The two-fuse scheme offers some distinct advantages: The
use of the dual fuse arrangement on distribution transformers
provides highly desirable performance characteristics since
each fuse operates in its optimum range. The two-fuse
combination results in a lower fuse replacement cost since
the Current Limiting Fuse operates only in the event of
transformer failure.
The number of Current Limiting Fuse sizes is minimized,
since a given fuse size can be matched with a range of
expulsion fuse links.
Description
The backup oil-submersible distribution Current Limiting
Fuse provides partial-range fault protection. This fuse is
        
Limiting Fuse capable of interrupting all currents from the
rated maximum interrupting current down to the rated
minimum interrupting current.
Since it is a partial-range fuse, another over-current protective
device must be used in series to give protection through the
complete range. For internal transformer protection, these

a helium mass spectrometer leak test to prove the integrity
of the seal.
Operation
The oil-submersible, Current Limiting Fuse is designed to
interrupt only currents above the minimum interrupting

      
amperes rms symmetrical.
To provide protection below the minimum interrupting
current of the oil-submersible protector another series
connected over-current protective device must be used.
Normally in distribution transformers, this device takes the
form of an under-oil expulsion fuse. The oil-submersible,
Current Limiting Fuse interrupts the high-fault currents
while the expulsion fuse interrupts low-fault currents.
 
its capability and to achieve full range protection of the
transformer.
The oil submerged protection (OSP) backup Current Limiting Fuse is
designed to be used in series with another protective devise.
H-J offers Fuses pre-mounted utilizing a Universal CL Fuse Holder
with Stainless Steel clamps.
Current Limiting Fuses
3
Shorty Fuses
The H-J Family of Companies has expanded its line of “Shorty”
Current Limiting Fuses to complete the entire range. The
        
         
by many utility customers. This expanded line of “Shorty”
Current Limiting Fuses further enhances H-J’s ability to offer
a complete package of components and accessories required
in today’s Distribution Transformer and Switchgear markets.
Pre-Mounted Fuses
Continuing H-J’s commitment to providing value added

our entire line of Current Limiting Fuses, including the

We can mount a single fuse on a standard H-J “Universal”
mounting block or a single fuse or multiple fuses can be
    

Fuse & Breaker Coordination
The H-J Family of Companies is pleased to offer a fuse
coordination tool at www.h-j.com/fuse-coordination for

the padmount transformer characteristics.
Shorty OSP Features:
• The “Shorty” design allows for maximum
space utilization in today’s optimized
transformer designs.
• 8.3 kV - 38 kV Class Range
• Wide range of current ratings
(30 to 200 AMP).
• Fuses can be paralleled for higher
ratings.
• 100% factory test for resistance and
hermetic seal.
• Tested to meet ANSI/IEEE standards.
OSP Features:
• 8.3 kV - 38 kV Class Range
• Wide range of current ratings
(30 AMP – 300 AMP).
• 100% factory-tested for resistance and
hermetic seal.
• Current Limiting Fuse experience dating
back to 1938.
Fuses pre-mounted in 3 phase conguration.
0.001
0.01
0.1
1
10
100
1000
1.0 10.0 100.0 1000.0 10000.0
TImeinseconds
CurrentinAmperes
ExpulsionFuseTCT CurrentLimitingFuseMMT InrushCurrent MaximumFaultCurrent
Current Limiting Fuses
4
Shorty Fuses 9F59C Series
Max Voltage
Continuous
Current
Rating
H-J Cat. #
Fuse Diameter
“C”
Body Length
“A”
Overall Length
“B”
Minimum
Interrupting
Rating
Minimum
Melting I
2
t
Maximum
Total I
2
t
Peak Arc
Voltage
Maximum
Interrupting
Rating
kV RMS AMPs – Inch Inch Inch RMS AMPs A
2
s A
2
s kV RMS AMP Sym
8.3
30 9F59CBC030
2.21
6.09 7.09
260 1890 10000
25
50,000
40 9F59CBC040 415 3180 12800
125 9F59CBC125
9.89 10.92
850 39690 136000
150 9F59CBC150 900 24200 130000
23165 9F59CBC165 1020 40590 200000
200 9F59CBC200 1120 56250 267000
10.0
50 9F59CBC050
6.68 7.70
300 2600 21500
24
65 9F59CBC065 350 3870 31000
80 9F59CBC080 430 6490 51000
100 9F59CBC100 570 13290 101000
15.5 165 9F59CBD165 2.21 15.49 16.53 780 53150 194000 43 50,000
17.2
30 9F59CBD030
2.21
8.17 9.17
240 1280 6200
49
50,000
40 9F59CBD040 330 2430 10500
50 9F59CBD050 440 4410 17700
65 9F59CBD065
11.01 12.01
360 3870 27500
4580 9F59CBD080 440 6490 39000
100 9F59CBD100 580 13290 67800
125 9F59CBD125
15.49 16.49
540 15490 66200
47 43,500
150 9F59CBD150 700 36000 132000
25.5
30 9F59CBE030
2.21
11.68 12.68
300 970 6900
64 50,000
40 9F59CBE040 390 1620 10300
50 9F59CBE050 570 3320 21600
65 9F59CBE065
15.29 16.29
360 3870 29700
80 9F59CBE080 440 6490 43900
100 9F59CBE100 575 13290 87500
38.0
65 9F59CCF065
3.29
18.32 19.32
440 2600 12500
105
50,000
80 9F59CCF080 550 5800 24200
100 9F59CCF100 700 9000 38900
125 9F59CCF125 950 19300 74500
*140 9F59CCF140
20.97
21.97
710 24300 105000
165 9F59CCF165 1200 43500 164000
200 9F59CDF200 25.97 1100 52600 230000 25,000
.63
15.9
.94
23.8
.25
6.4
(BOTH ENDS)
.30[7.6]
X
90°
,
NEAR SIDE
1/4-20 UNC
.50[12.7]
A
B
C
Shorty OSP Fuses
Current Limiting Fuses
5
Shorty Fuses Cross-Reference Chart
Description H-J Cat. # Cooper Cat. # Hi-Tech Cat. #
8.3 kV Class
30 AMP 9F59CBC030 CBUC080030C100 HTSS132030
40 AMP 9F59CBC040 CBUC08040C100 HTSS132040
50 AMP 9F59CBC050 CBUC08050C100 HTSS132050
65 AMP 9F59CBC065 CBUC08065C100 HTSS232065
80 AMP 9F59CBC080 CBUC08080C100 HTSS232080
100 AMP 9F59CBC100 CBUC08100C100 HTSS232100
125 AMP 9F59CBC125 CBUC08125C100 HTSS232125
150 AMP 9F59CBC150 CBUC081500C100 HTSS232150
165 AMP 9F59CBC165 CBUC081650C100 HTSS232165
200 AMP 9F59CBC200 - HTSS232200
15.5 kV Class
165 AMP 9F59CBD165 CBUC15165C100 HTSS242165
17.2 kV Class
30 AMP 9F59CBD030 CBUC17030C100 HTSS142030
40 AMP 9F59CBD040 CBUC17040C100 HTSS142040
50 AMP 9F59CBD050 CBUC17050C100 HTSS242050
65 AMP 9F59CBD065 CBUC17065C100 HTSS242065
80 AMP 9F59CBD080 CBUC15080C100 (15.5kV Class) HTSS242080
100 AMP 9F59CBD100 CBUC15100C100 (15.5kV Class) HTSS242100
125 AMP 9F59CBD125 CBUC15125C100 (15.5kV Class) HTSS242125
150 AMP 9F59CBD150 CBUC15150C100 (15.5kV Class) HTSS242150
25.5 kV Class
30 AMP 9F59CBE030 CBUC23030C100 (23kV) HTSS152030 (23kV)
40 AMP 9F59CBE040 CBUC23040C100 (23kV) HTSS152040 (23kV)
50 AMP 9F59CBE050 CBUC23050C100 (23kV) HTSS252050 (23kV)
65 AMP 9F59CBE065 CBUC23065C100 (23kV) HTSS252065 (23kV)
80 AMP 9F59CBE080 CBUC23080C100 (23kV) HTSS252080 (23kV)
100 AMP 9F59CBE100 CBUC23100C100 (23kV) HTSS252100 (23kV)
38 kV Class
65 AMP 9F59CCF065 CBUC38050D100 / CBUC38065D100 HTSS372065
80 AMP 9F59CCF080 CBUC38080D100 HTSS372080
100 AMP 9F59CCF100 CBUC38100D100 HTSS372100
125 AMP 9F59CCF125 CBUC38120D100 HTSS372125
140 AMP 9F59CCF140 CBUC38140D100 HTSS372140
165 AMP 9F59CCF165 Not Available HTSS372165
200 AMP 9F59CDF200 Not Available HTSS372200
Warning: This chart is for reference purposes only. Fusing requirements MUST be coordinated for proper protection.
9F59CBD165, 17.2 kV 165 AMP Shorty Fuse9F59CDF200, 38 kV 200 Amp Fuse
Current Limiting Fuses
6
[ B ]
[ C ]
.50
12.70
.63[15.87] HEX
[ A ]
1/4-20 UNC-2B
.50[12.7]
(BOTH ENDS)
9F59T Series - Standard Fuses
OSP Ratings and Dimensional Data
9F59T Series - Standard Fuses
Maximum Rating kV
Continuous Current
Rating rms
Amperes
Interrupting Rating
Amperes
(rms symmetrical)
H-J Cat. # Shipping Weight (lbs.)
Dimensions (inches)
A B C
8.3 kV
40 50,000 9F59TBC040 2.7 2.2 10.0 11.2
50 50,000 9F59TBC050 2.7 2.2 10.0 11.2
65 50,000 9F59TBC065 2.7 2.2 10.0 11.2
80 50,000 9F59TBC080 2.7 2.2 10.0 11.2
100 50,000 9F59TBC100 2.7 2.2 10.0 11.2
125 50,000 9F59TCC125 6.4 3.3 10.0 11.2
150 50,000 9F59TCC150 6.4 3.3 10.0 11.2
200 50,000 9F59TCC200 6.4 3.3 10.0 11.2
250 50,000 This rating is achieved by paralleling 2-9F59TCC125 fuses.
300 50,000 This rating is achieved by paralleling 2-9F59TCC150 fuses.
15.5 kV
40 50,000 9F59TBD040 4.4 2.2 15.42 16.62
50 50,000 9F59TBD050 4.4 2.2 15.42 16.62
65 50,000 9F59TBD065 4.4 2.2 15.42 16.62
80 50,000 9F59TBD080 4.4 2.2 15.42 16.62
100 50,000 9F59TCD100 9.6 3.3 15.42 16.62
125 50,000 9F59TCD125 9.6 3.3 15.42 16.62
150 50,000 9F59TCD150 9.6 3.3 15.42 16.62
250 50,000 This rating is achieved by paralleling 2-9F59TCD125 fuses.
300 50,000 This rating is achieved by paralleling 2-9F59TCD150 fuses.
23.0 kV
40 50,000 9F59TBE040 4.4 2.2 15.42 16.62
50 50,000 9F59TBE050 4.4 2.2 15.42 16.62
65 50,000 9F59TBE065 4.4 2.2 15.42 16.62
Standard OSP Fuses
Current Limiting Fuses
7
OSP Cross Reference Chart
Description H-J Cat. # Cooper Cat. # Hi-Tech Cat. #
8.3 kV 40 AMP 9F59TBC040 3543040M61M HTDS232040
8.3 kV 50 AMP 9F59TBC050 3543050M61M HTDS232050
8.3 kV 65 AMP 9F59TBC065 3543065M61M HTDS232065
8.3 kV 80 AMP 9F59TBC080 3543080M71M HTDS232080
8.3 kV 100 AMP 9F59TBC100 3543100M71M HTDS232100
8.3 kV 125 AMP 9F59TCC125 3543125M71M HTDS332125
8.3 kV 150 AMP 9F59TCC150 3543150M71M HTDS332150
8.3 kV 200 AMP 9F59TCC200 (2-100A Fuses) HTDS332200
15.5 kV 40 AMP 9F59TBD040 3544040M61M HTDS242040
15.5 kV 50 AMP 9F59TBD050 3544050M61M HTDS242050
15.5 kV 65 AMP 9F59TBD065 3544065M61M HTDS242065
15.5 kV 80 AMP 9F59TBD080 3544080M71M HTDS242080
15.5 kV 100 AMP 9F59TCD100 3544100M71M HTDS242100
15.5 kV 125 AMP 9F59TCD125 3544125M71M HTDS342125
15.5 kV 150 AMP 9F59TCD150 3544150M71M HTDS342150
23.0 kV 40 AMP 9F59TBE040 3545040M61M HTDS252040
23.0 kV 50 AMP 9F59TBE050 3545050M61M HTDS252050
23.0 kV 65 AMP 9F59TBE065 3545065M61M HTDS252065
Warning: This chart is for reference purposes only. Fusing requirements MUST be coordinated for proper protection.
3010 High Ridge Blvd., High Ridge, Mo. 63049 USA • +1-636-677-3421 • [email protected] • www.h-j.com • MKT-HJ-CLF-02-00 • 07/19/19