Littelfuse 700-xxx User Manual

POWR-GARD® Fuses—Medium Voltage

MEDIUM VOLTAGE FUSES

2,400-38,000 VAC • Current-Limiting

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.

1

Note: Extension distance
extension force 2 lb. minimum.

/

2” minimum;

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.

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

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 short­circuit 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.

Bolt-in Mount Fuses

1

© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com

POWR-GARD® Fuses—Medium Voltage

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 N umber Sys tem

130- 4 R-1C-5.5

Max Voltage (K V)

Style:
C (Car tridge)

B (Bolt Mount)
IB (Inverted Bolt Mount)
BI (Bolt-In Mount)

No. of Barrels

Rating (size)

Continuous Current

Dimensions

Dim.A

Clip

Center

3"DIA

6.38"

Dim.B

9.75"

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

Hookeye Feature*

For hookeye attachment; add “W” suffix
to part number

* See web for Bolt Mount, Inverte d Bolt Mount, and Bolt-W 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.

Figure 1 Figure 2 Figure 3

Cartridge “C”

Bolt Mount “B”

Sample Part #: 130 -4R-1B-5.5

Inverted-Bolt “IB”

Sample Part #: 130 -4R-1IB-5.5

2

Bolt-In Mount “BI”

Sample Part #: 130 -4R-1BI-5.5

© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com

POWR-GARD® Fuses—Medium Voltage

R-RATED MEDIUM VOLTAGE FUSES

Current-Limiting

R

RATED

2.75 KV

R

RATED

5.5 KV

R

RATED

5.5 KV

14”CLIP CENTERS

R

RATED

8.25 KV

For hookeye attachment; add “W” suffix to part number

SySTEM/
CATALOG
NUMBER

702R1C2.75 2R 70 7" 10.875" 170 80,000 1

1003R1C2.75 3R 100 7" 10.875" 250 80,000 1

130 4R1C 2.75 4R 130 7" 10.875" 340 80,000 1

150 5R1C2.75 5R 15 0 7" 10.875" 390 80,000 1

1706R1C2.75 6R 170 7" 10.8 75" 500 80,000 1

20 09R1C2 .75 9R 200 7" 10.87 5" 760 80,000 1

23012R1C2.75 12R 230 7" 10.8 75" 1000 80,000 1

39018R2 C2.75 18R 390 7" 10.875" 1500 80,000 2

45024R2C2.75 24R 450 7" 10.8 75" 19 50 80,000 2

SySTEM/
CATALOG
NUMBER

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
150 5R1C5.5 5R 150 12" 15.875" 390 80,000 1
170 6R1C5.5 6R 170 12" 15.875" 500 80,000 1
20 09R1C5 .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" 19 50 80,000 2
48026R2C5.5 26R 480 12" 15.875" 210 0 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

SySTEM/
CATALOG
NUMBER

702R1C5.5X 2R 70 14" 17. 875" 170 80,000 1
1003R1C5.5X 3R 10 0 14" 17. 8 75" 250 80,000 1
1304R1C5.5X 4R 130 14" 1 7.8 7 5 " 340 80,000 1
150 5R1C5.5X 5R 150 14" 17. 8 75" 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. 87 5" 1000 80,000 1

39018R2C5.5X 18R 390 14" 1 7.8 7 5 " 1500 80,000 2
45024R2C5.5X 24R 450 14" 17.8 7 5" 1950 80,000 2
55030R2C5.5X 30R 550 14” 17.8 7 5” 2400 80,000 2

SySTEM/
CATALOG
NUMBER

702R1C8.25 2R 70 12" 15.875" 190 80,000 1
1003R1C8.25 3R 10 0 12" 15.875" 225 80,000 1
130 4R1C 8.25 4R 130 12" 15.875" 330 80,000 1
150 5R1C8. 25 5R 150 12 " 15.875" 440 80,000 1
1706R1C8.25 6R 170 12" 15.875" 500 80,000 1
20 09R1C8.25 9R 200 12" 15.875" 740 80,000 1

23012R1C8.25 12R 230 12" 15.875" 955 80,000 1
39018R2 C8.25 18 R 390 12" 15.875" 144 0 80,000 2
45024R2C8.25 24R 450 12" 15.875" 1910 80,000 2

SIzE

SIzE

SIzE

SIzE

MA xIMUM

CONTINUOUS

CURRENT @

40 DEGREES C°

MA xIMUM

CONTINUOUS

CURRENT @

40 DEGREES C°

MA xIMUM

CONTINUOUS

CURRENT @

40 DEGREES C°

MA xIMUM

CONTINUOUS

CURRENT @

40 DEGREES C°

DIM. A

(INChES)

DIM. A

(INChES)

DIM. A

(INChES)

DIM. A

(INChES)

DIM. B

(INChES)

DIM. B

(INChES)

DIM. B

(INChES)

DIM. B

(INChES)

MINIMUM

INTERRUPTING

RATING RMS

AMPS

MINIMUM

INTERRUPTING

RAT ING RMS

AMPS

MINIMUM

INTERRUPTING

RAT ING RMS

AMPS

MINIMUM

INTERRUPTING

RAT ING RMS

AMPS

MAxIMUM

INTERRUPTING

RATING RMS

(ASyM)

MAxIMUM

INTERRUPTING

RAT ING RMS

(ASyM)

MAxIMUM

INTERRUPTING

RAT ING RMS

(ASyM)

MAxIMUM

INTERRUPTING

RAT ING RMS

(ASyM)

FIGURE

NUMBER

FIGURE

NUMBER

FIGURE

NUMBER

FIGURE

NUMBER

3

© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com