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United States
Tel: 901.252.8000
800.816.7809
Fax: 901.252.1354
Technical Services
Tel: 888.862.3289
H-110
Hi-Tech
®
EX Series Full-Range Current-Limiting Fuses
Power & High Voltage —
Elastimold
®
& Hi-Tech
®
Fuse Products
Blown Fuse Indicator
Before Operation
After Operation
As a full-range fuse, the Trans-Guard
®
EX is capable of
interrupting any current that causes melting up to its rated
maximum interrupting current of 50kA. Its ability to significantly
limit energy let-through during a fault greatly reduces the
likelihood of disruptive equipment failures. The blown fuse
indicator makes it easy to see when a fuse has operated,
helping to locate failed capacitor banks.
The Indoor versions of the Trans-Guard
®
EX current-limiting
capacitor fuses are used in metal-enclosed capacitor banks,
harmonic filter banks and padmounted capacitor banks. Outdoor
versions are coated with an oven-baked UV acrylic paint and are
used in open rack-mounted systems. All Trans-Guard
®
EX fuses
provide protection against disruptive equipment failures, such as
a case rupture, when a dielectric or non-dielectric fault occurs
within the capacitor. Fuses are sized to withstand transient inrush
currents associated with back-to-back capacitor bank switching.
The Trans-Guard
®
EX fuse is hermetically sealed so no external
expulsion gases are produced during interruption and it has no
moving parts. This makes it ideal for bus-mounting or bushing-
mounting, and both indoor and outdoor versions are available.
An additional design distinction is its patented damage sensor
which significantly reduces the potential for fuse failure in the
event of element-damaging current surges.
Dimensional Information
Rated Maximum
Voltage (kV)
Current Rating (Amps)
INCHES (MM)
Fuse Length “A”
Tag Length “B”
Fuse Diameter “C”
Tag Offset “D”
5.5
6–75
8.0 (203)
2.9 (74)
2.2 (56)
1.125 (29)
80–200
14.7 (373)
2.5 (64)
3.3 (84)
1.75 (44)
8.3
6–50
8.0 (203)
2.9 (74)
2.2 (56)
1.125 (29)
65–125
11.9 (302)
2.5 (64)
3.3 (84)
1.75 (44)
15.5
6–50
12.3 (312)
2.9 (74)
2.2 (56)
1.125 (29)
65–100
14.7 (373)
2.5 (64)
3.3 (84)
1.75 (44)
23.0
6–50
15.1 (384)
2.9 (74)
2.2 (56)
1.125 (29)
'D'
1 . 125 "
0.5" x 1.5" Slot
1 . 25 "
'D'
'B'
'A'
BLOWN FUSE
INDICATOR
'B'
'A'
'B'
BLOWN FUSE
INDICATOR
'C'
BUSHING
MOUNT
BUS
MOUNT
HTEX3***** = .68"
HTEX2***** = .48"
1/2-13 UNC THREAD
MIN THREAD DEPTH
HTEX3***** = .64"
HTEX2***** = .44"
'C'
Blown
Fuse
Indicator
Blown
Fuse
Indicator
Bushing
Mount
Bus Mount
.5" x 1.5"
Slot
1.25"
1.125"
HTEX3*****=.68"
HTEX2*****=.48"
1/2–13 UNC Thread
Min. Thread Depth
HTEX3*****=.64"
HTEX2*****=.44"
D
D
B
B
B
A
A
C
C