© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuses—Medium Voltage
1
Description
Littelfuse® offers a selection of E- and R-rated medium voltage
fuses for the protection of trans formers, potential transformers,
feeders, and motor circuits. Single, double, and triple barrel
designs are available to cover a wide range of current, voltage,
and interrupting ratings. Conventional ferrule type, clip lock,
and bolt-in mounting configurations are available for virtually
any application. Hermetically sealed fuses for use in hazardous
environments are also offered.
Contact the factory or your local Littelfuse representative for
additional fuse ratings or custom mounting configurations.
24-Hour Emergency Service is available. Call 800-227-0029,
Option 6.
Applications
• Power Transformer Protection
• Potential Transformer Protection
• Motor Controller Back-up Protection
• Fused Switches
• Feeder Circuits
General Information
The terms “Medium Voltage” and “High Voltage” have been
used interchangeably by many people to describe fuses
operating above 600 volts. Technically speaking, medium
voltage fuses are those intended for the voltage range from
2,400 to 38,000 VAC. High voltage fuses are for circuits
carrying voltages greater than 38,000 VAC.
E-rated fuses are considered to be general purpose fuses and
can be used to protect against low and high values of fault
current. R-rated fuses are designed for back-up protection.
They must be used in series with other devices such as motor
overload relays in order to achieve both overload and short-
circuit protection.
Medium voltage fuses are not intended to provide overload
protection in the same sense as fuses rated 600 volts or less.
Medium voltage fuse current ratings do not have the same
meanings as the ampere ratings of low voltage fuses.
All medium voltage fuses are limited in their ability to interrupt
low value overcurrents, especially those between 100%
and 200% of the fuse’s continuous current rating. They are
designed to carry their rated current without exceeding the
temperature rise permitted by NEMA and ANSI standards.
Current-limiting E- and R-rated
fuses are equipped with a
mechanical indicator or striker pin
that protrudes through the fuse cap
upon operation of the fuse. This
provides visual identification of a
blown fuse and can be used as a
trigger for external devices.
Note: Extension distance 1
/2” minimum;
extension force 2 lb. minimum.
MEDIUM VOLTAGE FUSES
2,400-38,000 VAC • Current-Limiting
Bolt-in Mount Fuses
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuses—Medium Voltage
2
R-RATED MEDIUM VOLTAGE FUSES
Current-Limiting
Description
R-rated fuses provide required short-circuit protection for medium
voltage motors, motor controllers and associated circuitry. These
components have limited ability to absorb the energy of large
short-circuit currents. Medium voltage motor controllers contain
overload relays which provide both overload protection and locked
rotor protection to the motor. The controllers are also intended to
interrupt low value short-circuits within the capability of the motor
controller. This protects the medium voltage fuse from sustained
overcurrents which are less than their minimum interrupting rating.
NEMA Standards for R-rated medium voltage power fuses
require they operate within 15-35 seconds when subjected to
an rms current 100 times the R rating. For example, a fuse with
a 2R rating will open within 15 to 35 seconds on an applied
current of 2 x 100 = 200 amperes.
Part Number System 130- 4R-1C-5.5
3"DIA
Dim.A
Clip
Center
6.38"
Dim.B
9.75"
A
D DD DDD
Figure 1 Figure 2 Figure 3
Hookeye Feature*
For hookeye attachment; add “W” suffix
to part number
* See web for Bolt Mount, Inverted Bolt Mount, and Bolt-W dimensions
Max Voltage (KV)
Style:
C (Cartridge)
B (Bolt Mount)
IB (Inverted Bolt Mount)
BI (Bolt-In Mount)
No. of Barrels
Rating (size)
Continuous Current
Characteristics
Voltage Ratings: 2,750 V – 8,250 V
Current Range: 2R – 36R
Options
• Hermetically sealed for use in hazardous locations
(add “S” suffix to part number)
• Bolt-in mounting configurations
Bolt Mount “B”
Sample Part #: 130-4R-1B-5.5
Inverted-Bolt “IB”
Sample Part #: 130-4R-1IB-5.5
Bolt-In Mount “BI”
Sample Part #: 130-4R-1BI-5.5
Cartridge “C”
Dimensions
Medium Voltage
Fuse Protection
POWR-GARD® medium
voltage fuses provide
short-circuit protection
for motors and
transformers rated
2,400 to 38,000 volts AC.
Visit www.littelfuse.com/technicalcenter
for additional protection tables, sizing
recommendations, and applications.
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuses—Medium Voltage
3
R-RATED MEDIUM VOLTAGE FUSES
Current-Limiting
R
RATED
SySTEM/
CATALOG
NUMBER
SIzE
MAxIMUM
CONTINUOUS
CURRENT @
40 DEGREES C°
DIM. A
(INChES)
DIM. B
(INChES)
MINIMUM
INTERRUPTING
RATING RMS
AMPS
MAxIMUM
INTERRUPTING
RATING RMS
(ASyM)
FIGURE
NUMBER
5.5 KV
702R1C5.5 2R 70 12" 15.875" 170 80,000 1
1003R1C5.5 3R 100 12" 15.875" 250 80,000 1
1304R1C5.5 4R 130 12" 15.875" 340 80,000 1
1505R1C5.5 5R 150 12" 15.875" 390 80,000 1
1706R1C5.5 6R 170 12" 15.875" 500 80,000 1
2009R1C5.5 9R 200 12" 15.875" 760 80,000 1
23012R1C5.5 12R 230 12" 15.875" 1000 80,000 1
39018R2C5.5 18R 390 12" 15.875" 1500 80,000 2
45024R2C5.5 24R 450 12" 15.875" 1950 80,000 2
48026R2C5.5 26R 480 12" 15.875" 2100 80,000 2
55030R2C5.5 30R 550 12" 15.875" 2400 80,000 2
60032R2C5.5 32R 600 12" 15.875" 2600 80,000 2
65036R2C5.5 36R 650 12" 15.875" 2900 80,000 2
55030R3C5.5 30R 550 12" 15.875" 2400 80,000 3
60032R3C5.5 32R 600 12" 15.875" 2600 80,000 3
65036R3C5.5 36R 650 12" 15.875" 2900 80,000 3
R
RATED
SySTEM/
CATALOG
NUMBER
SIzE
MAxIMUM
CONTINUOUS
CURRENT @
40 DEGREES C°
DIM. A
(INChES)
DIM. B
(INChES)
MINIMUM
INTERRUPTING
RATING RMS
AMPS
MAxIMUM
INTERRUPTING
RATING RMS
(ASyM)
FIGURE
NUMBER
8.25 KV
702R1C8.25 2R 70 12" 15.875" 190 80,000 1
1003R1C8.25 3R 100 12" 15.875" 225 80,000 1
1304R1C8.25 4R 130 12" 15.875" 330 80,000 1
1505R1C8.25 5R 150 12" 15.875" 440 80,000 1
1706R1C8.25 6R 170 12" 15.875" 500 80,000 1
2009R1C8.25 9R 200 12" 15.875" 740 80,000 1
23012R1C8.25 12R 230 12" 15.875" 955 80,000 1
39018R2C8.25 18R 390 12" 15.875" 1440 80,000 2
45024R2C8.25 24R 450 12" 15.875" 1910 80,000 2
For hookeye attachment; add “W” suffix to part number
R
RATED
SySTEM/
CATALOG
NUMBER
SIzE
MAxIMUM
CONTINUOUS
CURRENT @
40 DEGREES C°
DIM. A
(INChES)
DIM. B
(INChES)
MINIMUM
INTERRUPTING
RATING RMS
AMPS
MAxIMUM
INTERRUPTING
RATING RMS
(ASyM)
FIGURE
NUMBER
5.5 KV
14”CLIP CENTERS
702R1C5.5X 2R 70 14" 17.875" 170 80,000 1
1003R1C5.5X 3R 100 14" 17.875" 250 80,000 1
1304R1C5.5X 4R 130 14" 17.875" 340 80,000 1
1505R1C5.5X 5R 150 14" 17.875" 390 80,000 1
1706R1C5.5X 6R 170 14" 17.875" 500 80,000 1
2009R1C5.5X 9R 200 14" 17.875" 760 80,000 1
23012R1C5.5X 12R 230 14" 17.875" 1000 80,000 1
39018R2C5.5X 18R 390 14" 17.875" 1500 80,000 2
45024R2C5.5X 24R 450 14" 17.8 75" 1950 80,000 2
55030R2C5.5X 30R 550 14” 17.875” 2400 80,000 2
R
RATED
SySTEM/
CATALOG
NUMBER
SIzE
MAxIMUM
CONTINUOUS
CURRENT @
40 DEGREES C°
DIM. A
(INChES)
DIM. B
(INChES)
MINIMUM
INTERRUPTING
RATING RMS
AMPS
MAxIMUM
INTERRUPTING
RATING RMS
(ASyM)
FIGURE
NUMBER
2.75 KV
702R1C2.75 2R 70 7" 10.875" 170 80,000 1
1003R1C2.75 3R 100 7" 10.875" 250 80,000 1
1304R1C2.75 4R 130 7" 10.875" 340 80,000 1
1505R1C2.75 5R 150 7" 10.875" 390 80,000 1
1706R1C2.75 6R 170 7" 10.875" 500 80,000 1
2009R1C2.75 9R 200 7" 10.875" 760 80,000 1
23012R1C2.75 12R 230 7" 10.875" 1000 80,000 1
39018R2C2.75 18R 390 7" 10.875" 1500 80,000 2
45024R2C2.75 24R 450 7" 10.875" 1950 80,000 2
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuses—Medium Voltage
4
E-RATED MEDIUM VOLTAGE FUSES
Current-Limiting
Description
E-rated fuses have time current characteristics designed to
provide current-limiting protection for power transformers,
potential transformers, power centers, feeder centers, and unit
sub stations. When properly applied, they can protect against
high and low fault currents.
NEMA Standards for E-rated medium voltage fuses require that
fuses rated 100E or less open within 300 seconds
(5 minutes) when subjected to an RMS value of 200-240% of
the fuse continuous current rating; and fuses with an
E rating larger than 100E must open within 600 seconds
(10 minutes) when subjected to an RMS current of 220-240%
of the fuse’s continuous current rating. These values establish
one point on the time-current curve.
Application Note
Since these fuses are used for the protection of general
purpose circuits which may contain transformers, motors, and
other equipment producing in-rush and/or overload currents,
fuses should generally be rated at 140% of the normal full load
current, and circuits should be analyzed
to ensure that system load currents will not exceed the current
rating of the fuse.
3"DIA
Dim.A
Clip
Center
6.38"
Dim.B
9.75"
A
D DD DDD
Figure 4 Figure 5 Figure 6
Characteristics
Voltage Ratings: 2,750 V – 38,000 V
Current Range: 10E – 600E
Options
• Hermetically sealed for use in hazardous locations
(add “S” suffix to part number)
• Clip-lock (CL) and bolt-in styles available.
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM)
FIGURE
NUMBER
2.75 MAx. KV
10E1C2.75 10E 7" 10.875" 80,000 4
15E1C2.75 15E 7" 10.875" 80,000 4
20E1C2.75 20E 7" 10.875" 80,000 4
25E1C2.75 25E 7" 10.875" 80,000 4
30E1C2.75 30E 7" 10.875" 80,000 4
40E1C2.75 40E 7" 10.875" 80,000 4
50E1C2.75 50E 7" 10.875" 80,000 4
65E1C2.75 65E 7" 10.875" 80,000 4
80E1C2.75 80E 7" 10.875" 80,000 4
100E-1C2.75 100E 7" 10.875" 80,000 4
125E1C2.75 125E 7" 10.875" 80,000 4
150E1C2.75 150E 7" 10.875" 80,000 4
200E1C2.75 200E 7" 10.875" 80,000 4
125E2C2.75 125E 7" 10.875" 80,000 5
150E2C2.75 150E 7" 10.875" 80,000 5
200E2C2.75 200E 7" 10.875" 80,000 5
225E2C2.75 225E 7" 10.875" 80,000 5
250E2C2.75 250E 7" 10.875" 80,000 5
300E2C2.75 300E 7" 10.875" 80,000 5
350E2C2.75 350E 7" 10.875" 80,000 5
400E2C2.75 400E 7" 10.875" 80,000 5
450E2C2.75 450E 7" 10.875" 80,000 5
Dimensions
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuses—Medium Voltage
5
E-RATED MEDIUM VOLTAGE FUSES
Current-Limiting
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM) FIGURE NUMBER
5.5 MAx. KV
10E1C5.5 10E 12" 15.875" 80,000 4
15E1C5.5 15E 12" 15.875" 80,000 4
20E1C5.5 20E 12" 15.875" 80,000 4
25E1C5.5 25E 12" 15.875" 80,000 4
30E1C5.5 30E 12" 15.875" 80,000 4
40E1C5.5 40E 12" 15.875" 80,000 4
50E1C5.5 50E 12" 15.875" 80,000 4
65E1C5.5 65E 12" 15.875" 80,000 4
80E1C5.5 80E 12" 15.875" 80,000 4
100E1C5.5 100E 12" 15.875" 80,000 4
125E1C5.5 125E 12" 15.875" 80,000 4
150E1C5.5 150E 12" 15.875" 80,000 4
175E1C5.5 175E 12" 15.875" 80,000 4
200E1C5.5 200E 12" 15.875" 80,000 4
125E2C5.5 125E 12" 15.875" 80,000 5
150E2C5.5 150E 12" 15.875" 80,000 5
175E2C5.5 175E 12" 15.875" 80,000 5
200E2C5.5 200E 12" 15.875" 80,000 5
250E2C5.5 250E 12" 15.875" 80,000 5
300E2C5.5 300E 12" 15.875" 80,000 5
350E2C5.5 350E 12" 15.875" 80,000 5
400E2C5.5 400E 12" 15.875" 80,000 5
450E2C5.5 450E 12" 15.875" 80,000 5
500E3C5.5 500E 12" 15.875" 80,000 6
550E3C5.5 550E 12" 15.875" 80,000 6
600E3C5.5 600E 12" 15.875" 80,000 6
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM) FIGURE NUMBER
5.5 MAx. KV
5NLE10E 10E 14” 17 7⁄8"80,000 4
5NLE15E 15E 14” 17 7⁄8"80,000 4
5NLE20E 20E 14” 17 7⁄8"80,000 4
5NLE25E 25E 14” 17 7⁄8"80,000 4
5NLE30E 30E 14” 17 7⁄8"80,000 4
5NLE40E 40E 14” 17 7⁄8"80,000 4
5NLE50E 50E 14” 17 7⁄8"80,000 4
5NLE65E 65E 14” 17 7⁄8"80,000 4
5NLE80E 80E 14” 17 7⁄8"80,000 4
5NLE100E 100E 14” 17 7⁄8"80,000 4
5NLE125E 125E 14“ 17 7⁄8"80,000 4
5NLE150E 150E 14” 17 7⁄8"80,000 4
5NLE175E 175E 14” 17 7⁄8"80,000 4
5NLE200E 200E 14” 17 7⁄8"80,000 4
5NLE2225E 225E 14” 17 7⁄8"80,000 5
5NLE2250E 250E 14” 17 7⁄8"80,000 5
5NLE2300E 300E 14” 17 7⁄8"80,000 5
5NLE2350E 350E 14” 17 7⁄8"80,000 5
5NLE2400E 400E 14” 17 7⁄8"80,000 5
5NLE2450E 450E 14” 17 7⁄8"80,000 5
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuses—Medium Voltage
6
E-RATED MEDIUM VOLTAGE FUSES
Current-Limiting
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM) FIGURE NUMBER
8.25 MAx. KV
10E1C8.25 10E 12" 15 7⁄8"80,000, 4
15E1C8.25 15E 12" 15 7⁄8"80,000 4
20E1C8.25 20E 12" 15 7⁄8"80,000 4
25E1C8.25 25E 12" 15 7⁄8"80,000 4
30E1C8.25 30E 12" 15 7⁄8"80,000 4
40E1C8.25 40E 12" 15 7⁄8"80,000 4
50E1C8.25 50E 12" 15 7⁄8"80,000 4
65E1C8.25 65E 12" 15 7⁄8"80,000 4
80E1C8.25 80E 12" 15 7⁄8"80,000 4
100E1C8.25 100E 12" 15 7⁄8"80,000 4
125E1C8.25 125E 12" 15 7⁄8"80,000 4
150E1C8.25 150E 12" 15 7⁄8"80,000 4
125E2C8.25 125E 12" 15 7⁄8"80,000 5
150E2C8.25 150E 12" 15 7⁄8"80,000 5
200E2C8.25 200E 12" 15 7⁄8"80,000 5
250E2C8.25 250E 12" 15 7⁄8"80,000 5
300E2C8.25 300E 12" 15 7⁄8"80,000 5
350E3C8.25 350E 12" 15 7⁄8"80,000 6
400E3C8.25 400E 12" 15 7⁄8"80,000 6
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM) FIGURE NUMBER
15.5 MAx. KV
10E1C15.5 10E 15" 18.875" 80,000 4
15E1C15.5 15E 15" 18.875" 80,000 4
20E1C15.5 20E 15" 18.875" 80,000 4
25E1C15.5 25E 15" 18.875" 80,000 4
30E1C15.5 30E 15" 18.875" 80,000 4
40E1C15.5 40E 15" 18.875" 80,000 4
50E1C15.5 50E 15" 18.875" 80,000 4
65E1C15.5 65E 15" 18.875" 80,000 4
80E1C15.5 80E 15" 18.875" 80,000 4
100E1C15.5 100E 15" 18.875" 80,000 4
65E2C15.5 65E 15" 18.875" 80,000 5
80E2C15.5 80E 15" 18.875" 80,000 5
100E2C15.5 100E 15" 18.875" 80,000 5
125E2C15.5 125E 15" 18.875" 80,000 5
150E2C15.5 150E 15" 18.875" 80,000 5
175E2C15.5 175E 15" 18.875" 80,000 5
200E2C15.5 200E 15" 18.875" 80,000 5
200E3C15.5 200E 15" 18.875" 80,000 6
250E3C15.5 250E 15" 18.875" 80,000 6
300E3C15.5 300E 15" 18.875" 80,000 6
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM) FIGURE NUMBER
8.25 MAx. KV
8NLE10E 10E 14" 17 7⁄8"80,000 4
8NLE15E 15E 14" 17 7⁄8"80,000 4
8NLE20E 20E 14" 17 7⁄8"80,000 4
8NLE25E 25E 14" 17 7⁄8"80,000 4
8NLE30E 30E 14" 17 7⁄8"80,000 4
8NLE40E 40E 14" 17 7⁄8"80,000 4
8NLE50E 50E 14" 17 7⁄8"80,000 4
8NLE65E 65E 14" 17 7⁄8"80,000 4
8NLE80E 80E 14" 17 7⁄8"80,000 4
8NLE100E 100E 14" 17 7⁄8"80,000 4
8NLE2100E 100E 14" 17 7⁄8"80,000 5
8NLE2125E 125E 14" 17 7⁄8"80,000 5
8NLE2150E 150E 14" 17 7⁄8"80,000 5
8NLE2200E 200E 14" 17 7⁄8"80,000 5
8NLE2250E 250E 14" 17 7⁄8"80,000 5
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuses—Medium Voltage
7
E-RATED MEDIUM VOLTAGE FUSES
Current-Limiting
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM) FIGURE
NUMBER
15.5 MAx. KV
15GSE65E 65E 18" 217⁄8"60,000 4
15GSE80E 80E 18" 217⁄8"60,000 4
15GSE100E 100E 18" 217⁄8"60,000 4
15GSE2125E 125E 18" 217⁄8"60,000 5
15GSE2150E 150E 18" 217⁄8"60,000 5
15GSE2175E 175E 18" 217⁄8"60,000 5
15GSE2200E 200E 18" 217⁄8"60,000 5
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM) FIGURE
NUMBER
38 MAx. KV
3E1C38.0 3E 27" 305⁄8"20,000 4
7E1C38.0 7E 27" 305⁄8"20,000 4
10E1C38.0 10E 27" 305⁄8"20,000 4
15E1C38.0 15E 27" 305⁄8"20,000 4
20E1C38.0 20E 27" 305⁄8"20,000 4
25E1C38.0 25E 27" 305⁄8"20,000 4
30E1C38.0 30E 27" 305⁄8"20,000 4
40E1C38.0 40E 27" 305⁄8"20,000 4
50E2C38.0 50E 27" 305⁄8"20,000 5
65E2C38.0 65E 27" 305⁄8"20,000 5
80E2C38.0 80E 27" 305⁄8"20,000 5
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM) FIGURE
NUMBER
25.8 MAx. KV
15E1C25.8 15E 21" 245⁄8"40,000 4
20E1C25.8 20E 21" 245⁄8"40,000 4
25E1C25.8 25E 21" 245⁄8"40,000 4
30E1C25.8 30E 21" 245⁄8"40,000 4
40E1C25.8 40E 21" 245⁄8"40,000 4
50E1C25.8 50E 21" 245⁄8"40,000 4
65E2C25.8 65E 21" 245⁄8"40,000 5
80E2C25.8 80E 21" 245⁄8"40,000 5
100E2C25.8 100E 21" 245⁄8"40,000 5
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM) FIGURE
NUMBER
15.5 MAx. KV
15NLE10E 10E 20" 237⁄8"60,000 4
15NLE15E 15E 20" 237⁄8"60,000 4
15NLE20E 20E 20" 237⁄8"60,000 4
15NLE25E 25E 20" 237⁄8"60,000 4
15NLE30E 30E 20" 237⁄8"60,000 4
15NLE40E 40E 20" 237⁄8"60,000 4
15NLE50E 50E 20" 237⁄8"60,000 4
15NLE65E 65E 20" 237⁄8"60,000 4
15NLE80E 80E 20" 237⁄8"60,000 4
15NLE100E 100E 20" 237⁄8"60,000 4
15NLE280E 80E 20" 237⁄8"60,000 5
15NLE2100E 100E 20" 237⁄8"60,000 5
15NLE2125E 125E 20" 237⁄8"60,000 5
15NLE2150E 150E 20" 237⁄8"60,000 5
15NLE2175E 175E 20" 237⁄8"60,000 5
15NLE2200E 200E 20" 237⁄8"60,000 5
15NLE3150E 150E 20" 237⁄8"60,000 6
15NLE3175E 175E 20" 237⁄8"60,000 6
15NLE3250E 250E 20" 237⁄8"60,000 6
15NLE3300E 300E 20" 237⁄8"60,000 6
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuses—Medium Voltage
8
E-RATED MEDIUM VOLTAGE FUSES
Current-Limiting
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM)
FIGURE
NUMBER
5.5 MAx. KV
CLIP LOCK
10E1CL5.5 10E 16.38" 15.13" 80,000 7
15E1CL5.5 15E 16.38" 15.13" 80,000 7
20E1C5.5 20E 16.38" 15.13" 80,000 7
25E1CL5.5 25E 16.38" 15.13" 80,000 7
30E1CL5.5 30E 16.38" 15.13" 80,000 7
40E1CL5.5 40E 16.38" 15.13" 80,000 7
50E1CL5.5 50E 16.38" 15.13" 80,000 7
65E1CL5.5 65E 16.38" 15.13" 80,000 7
80E1CL5.5 80E 16.38" 15.13" 80,000 7
100E1CL5.5 100E 16.38" 15.13" 80,000 7
125E1CL5.5 125E 16.38" 15.13" 80,000 7
150E1CL5.5 150E 16.38" 15.13" 80,000 7
225E2CL5.5 225E 17.38" 16.13" 80,000 8
250E2CL5.5 250E 17.38" 16.13" 80,000 8
300E2CL5.5 300E 17.38" 16.13" 80,000 8
350E2CL5.5 350E 17.38" 16.13" 80,000 8
400E2CL5.5 400E 17.38" 16.13" 80,000 8
450E2CL5.5 450E 17.3 8" 16.13" 80,000 8
500E3CL5.5 500E 17.38" 16.13" 80,000 9
550E3CL5.5 550E 17.38 " 16.13" 80,000 9
600E3CL5.5 600E 17.38" 16.13" 80,000 9
4.75 7.94 11.56
1.25
AB
1.25
.25
3.0
Clip Lock Design
The clip lock type designs ensures a positive contact between
the fuse and the connection cam. The fuse’s clip lock tab slides
in between the clip casting and the cam to prevent the fuse
from slipping or blowing out of the holder. This positive contact
improves heat dissipation and allows fuses to run cooler. Figure 7 Figure 8 Figure 9
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM)
FIGURE
NUMBER
8.25 MAx. KV
CLIP LOCK
10E1CL8.25 10E 17.38" 16.13" 80,000 7
15E1CL8.25 15E 17.3 8" 16.13" 80,000 7
20E1C8.25 20E 17.38" 16.13" 80,000 7
25E1CL8.25 25E 17.3 8" 16.13" 80,000 7
30E1CL8.25 30E 17.3 8" 16.13" 80,000 7
40E1CL8.25 40E 17.38" 16.13" 80,000 7
50E1CL8.25 50E 17.38" 16.13" 80,000 7
65E1CL8.25 65E 17.3 8" 16.13" 80,000 7
80E1CL8.25 80E 17.38" 16.13" 80,000 7
100E1CL8.25 100E 17.3 8" 16.13" 80,000 7
125E2CL8.25 125E 17.38" 16.13" 80,000 8
150E2CL8.25 150E 17.3 8" 16.13" 80,000 8
175E2CL8.25 175E 17.3 8" 16.13" 80,000 8
200E2CL8.25 200E 17.3 8" 16.13" 80,000 8
225E2CL8.25 225E 17.3 8" 16.13" 80,000 8
250E2CL8.25 250E 17.38" 16.13" 80,000 8
300E2CL8.25 300E 17.3 8" 16.13" 80,000 8
350E3CL8.25 350E 17.38" 16.13" 80,000 9
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIM. A (INChES) DIM. B (INChES) MAx INTERRUPTING
RATING RMS (ASyM)
FIGURE
NUMBER
15.5 MAx. KV
CLIP LOCK
10E1CL15.5 10E 19.8" 18.1" 60,000 7
15E1CL15.5 15E 19.8" 18.1" 60,000 7
20E1CL15.5 20E 19.8" 18.1" 60,000 7
25E1CL15.5 25E 19.8" 18.1" 60,000 7
30E1CL15.5 30E 19.8" 18.1" 60,000 7
40E1CL15.5 40E 19.8" 18.1" 60,000 7
50E1CL15.5 50E 19.8" 18.1" 60,000 7
65E1CL15.5 65E 22.81" 21.13" 60,000 7
80E1CL15.5 80E 22.81" 21.13" 60,000 7
100E1CL15.5 100E 22.81" 21.13" 60,000 7
125E2CL15.5 125E 22.81" 19.1" 60,000 8
150E2CL15.5 150E 22.81” 19.1” 60,000 8
175E2CL15.5 175E 22.81" 19.1" 60,000 8
200E2CL15.5 200E 22.81” 19.1” 60,000 8
150E3CL15.5 150E 22.81" 19.1" 60,000 9
200E3CL15.5 200E 22.81" 19.1" 60,000 9
250E3CL15.5 250E 22.81" 19.1" 60,000 9
300E3CL15.5 300E 22.81" 19.1" 60,000 9
Dimensions in inches
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuses—Medium Voltage
9
Fuses — Medium Voltage
E-RATED POTENTIAL TRANSFORMER FUSES
Current-Limiting
A
B
Description
Potential Transformer (PT) fuses are current-limiting fuses with
high interrupting ratings designed for the protection of potential
transformers.
Application Note
When applying fuses for the protection of transformers,
the magnetizing current in-rush must be considered. The
characteristics of the in-rush, which can be matched with
a fuse time-current curve, should be available from the
transformer manufacturer.
Characteristics
Voltage Ratings: 625 VAC – 25,800 VAC
Current Range: 1/2E – 10E
E
RATED
SySTEM/CATALOG
NUMBER SIzE DIMENSION A
(INChES) DIAMETER DIMENSION B
(INChES) MAx INTERRUPTING
RATING RMS (SyM)
625
VOLT
3E4PT6 3E 4.6” 0.8125” 37,500
5E4PT6 5E 4.6” 0.8125” 37,500
7E4PT6 7E 4.6” 0.8125” 37,500
10E4PT6 10E 4.6” 0.8125” 37,500
2.75
MAx.
KV
500E4PT2.4 1/2E 4.6” 0.8125” 37,500
1E4PT2.4 1E 4.6” 0.8125” 37,500
2E4PT2.4 2E 4.6” 0.8125” 37,500
2.75
MAx. KV
1E6PT2.75 1E 7.4” 1.5625” 37,500
2E6PT2.75 2E 7.4” 1.5625” 37,500
3E6PT2.75 3E 7.4” 1.5625” 37,500
1E8PT2.75 1E 9.5” 1.5625” 37,500
2E8PT2.75 2E 9.5” 1.5625” 37,500
3E8PT2.75 3E 9.5” 1.5625” 37,500
4.8
MAx.
KV
1E5PT4.8 1E 5.6” 0.8125” 50,000
2E5PT4.8 2E 5.6” 0.8125” 50,000
5.5
MAx. KV
1/2E6PT5.5 1/2E 7.4” 1.5625” 50,000
1E6PT5.5 1E 7.4” 1.5625” 50,000
2E6PT5.5 2E 7.4” 1.5625” 50,000
3E6PT5.5 3E 7.4” 1.5625” 50,000
5E6PT5.5 5E 7.4” 1.5625” 50,000
1/2E8PT5.5 1/2E 9.5” 1.5625” 50,000
1E8PT5.5 1E 9.5” 1.5625” 50,000
2E8PT5.5 2E 9.5” 1.5625” 50,000
3E8PT5.5 3E 9.5” 1.5625” 50,000
5E8PT5.5 5E 9.5” 1.5625” 50,000
10E8PT5.5 10E 9.5” 1.5625” 50,000
8.25
MAx.
KV
1/2E8PT8.25 1/2E 9.5” 1.5625” 50,000
1E8PT8.25 1E 9.5” 1.5625” 50,000
2E8PT8.25 2E 9.5” 1.5625” 50,000
3E8PT8.25 39.5” 1.5625” 50,000
15.5
MAx. KV
1/2E11PT15.5 1/2E 12.8” 1.5625” 35,000
1E11P T15.5 1E 12.8” 1.5625” 35,000
2E11PT15.5 2E 12.8” 1.5625” 35,000
3E11PT15.5 3E 12.8” 1.5625” 35,000
3E16PT15.5 3E 17.5” 1.5625” 35,000
5E16PT15.5 5E 17.5” 1.5625” 35,000
25.8
MAx.
KV
1/2E16PT25.5 1/2E 17.5” 1.5625” 32,000
1E16PT25.5 1E 17.5” 1.5625” 32,000
Dimensions
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuses—Medium Voltage
10
LIVE PARTS
TRIPLE BARREL
Bottom Lever In
Closed Position
.56 Dia. (2) Holes
For Mounting
Cable/Bus
.44 DIA. (2) HOLES
DOUBLE BARREL
SINGLE BARREL
1.75
1.00
2.00
2.00
2.00
4.9
4.85
3.63
3.63
3.75
Top Lever in
Open Position
A
Blown Fuse
Indicator
TOP
VIEW
4.50
3.08
1.50
4.16
.038" HOLES
.78 .63
.08
.30
.31
.08
.71
1.15
.05
.78
Description
Live parts are available for mounting E, R, and PT single, double, and triple barrel fuses.
Mounting clips are available for ferrule type and clip lock style fuses.
All clips are sold in pairs.
Part Number: 700-520-CL
System Number: 0700520.ZXCL
Clip Lock Design
Part Number: 700-530
System Number: 0700530.Z
For use with all 3" diameter fuses.
Dimensions for reference only.
Part Number: 700-500
System Number: 0700500.Z
For use with all 13/16" (.8125”) diameter PT fuses
Mounting Details for Clip Lock Dimensions in inches
Part Number: 700-156
System Number: 0700156.Z
For use with 19/16" to 15/8” (1.625”) diameter PT fuses.
Part Number: 700-300
System Number: 0700300.Z
For use with 3" diameter fuses.
2.85
2.00
3.74
Dimensions in inches
Dimensions in inches
Dimensions in inches
Dimensions in inches
