390-18R-2C-5.5 - Littelfuse, Inc.

61

Medium Voltage Fuses

2400 - 25,500 VAC ■Current Limiting

Littelfuse now offers a complete 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 now available for virtually any

application. Hermetically sealed fuses for use in hazardous

environments are also offered.

Contact the factor y or your local Littelfuse representative for

additional fuse ratings or custom mounting configurations.

24 Hour Emergency Service is available .

Call 1-800-227-0029.

APPLICATIONS

■P o wer Tr ansf ormer

Protection

■P otential Transf ormer

Protection

■Motor Controller Back-up

Protection

■Fused Switches

■Feeder Circuits

GENERAL INFORMATION

The terms “Medium Voltage” and “high v oltage” 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

carr ying voltages greater than 38,000 VAC.

“E” Rated fuses are considered to be general pur pose fuses

and can be used to protect against low and high values of

fault current.“R” rated fuses are designed for back-up pro-

tection.They must be used in series with other devices, such

as motor over load relays, in order to achieve both over load

and shor t 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 inter-

rupt low value overcurrents, especially those between 100%

and 200% of the fuse’s continuous current rating.They are

designed to carr y their rated current without exceeding the

temperature rise per mitted by NEMA and ANSI standards.

Additional application data can be found in the Fuse

Application section of the POWR-GARD Products

catalog (PF101).

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 exter nal

devices.

Bolt-in Mount Fuses

62

R Rated Medium Voltage Fuses

Current Limiting

FEATURES

“R” rated fuses provide required short-circuit protection for

medium voltage motors, motor controllers and associated

circuitr y.These components have limited ability to absorb the

energy of large shor t circuit currents. Medium voltage motor

controllers contain over load relays which provide both over-

load protection and locked rotor protection to the motor.The

controllers are also intended to interrupt low value short cir-

cuits within the capability of the motor controller.This pro-

tects 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 that they operate within 15-35 seconds when sub-

jected to an rms current 100 times the “R” rating. For exam-

ple, 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

Catalog

Number

70-2R-1C-2.75

100-3R-1C-2.75

130-4R-1C-2.75

150-5R-1C-2.75

170-6R-1C-2.75

200-9R-1C-2.75

230-12R-1C-2.75

390-18R-2C-2.75

450-24R-2C-2.75

2.75 KV

3"DIA

Dim.A

Clip

Center

6.38"

Dim.B

9.75"

D DD DDD

Old

Catalog

Number

LCK 2R

LCK 3R

LCK 4R

LCK 5R

LCK 6R

LCK 9R

LCK 12R

LCK 18R

LCK 24R

Size

2R

3R

4R

5R

6R

9R

12R

18R

24R

Maximum

Continuous

Current

@ 40 deg C.

70

100

130

150

170

200

230

390

450

Dim. A

(inches)

7"

Dim. B

(inches)

10.875"

Minimum

Interrupting

Rating

RMS Amps

170

250

340

390

500

760

1000

1500

1950

Max

Interrupting

Rating

RMS Asym

80,000

Figure

Number

1

2

CHARACTERISTICS

Voltage Rating: 2,400 volts – 15,500 volts

Current Range: 2R – 36R

OPTIONS

■Hermitically sealed for use in hazardous locations

(add “S”suffix to part number)

■Hookeye attachment (add “W”suffix to par t number)

■Bolt-in mounting configurations

R

RATED

FIGURE 1 FIGURE 2 FIGURE 3

Hookeye

Feature*

*For hookeye attach-

ment; add “W”suffix

to par t number

Max Voltage (KV)

Style (C-Car tridge)

No. of Barrels

Rating (size)

Continuous Current

Add “w”suffix to par t number for hookeye attachment.

63

R Rated Medium Voltage Fuses

Current Limiting

5.5 KV

14”Clip Centers

R

RATED

5.5 KV

3"DIA

Dim.A

(Clip

Center)

6.38"

Dim.B

9.75"

Catalog

Number

70-2R-1C-5.5

100-3R-1C-5.5

130-4R-1C-5.5

150-5R-1C-5.5

170-6R-1C-5.5

200-9R-1C-5.5

230-12R-1C-5.5

390-18R-2C-5.5

450-24R-2C-5.5

480-26R-2C-5.5

550-30R-2C-5.5

600-32R-2C-5.5

650-36R-2C-5.5

550-30R-3C-5.5

600-32R-3C-5.5

650-36R-3C-5.5

Old

Catalog

Number

LCL 2R

LCL 3R

LCL 4R

LCL 5R

LCL 6R

LCL 9R

LCL 12R

LCL 18R

LCL 24R

—

LCL 36R

Size

2R

3R

4R

5R

6R

9R

12R

18R

24R

26R

30R

32R

36R

30R

32R

36R

Maximum

Continuous

Current

@ 40 deg C.

70

100

130

150

170

200

230

390

450

480

550

600

650

550

600

650

Dim. A

(inches)

12"

Dim. B

(inches)

15.875"

Minimum

Interrupting

Rating

RMS Amps

170

250

340

390

500

760

1000

1500

1950

2100

2400

2600

2900

2400

2600

2900

Max

Interrupting

Rating

RMS (Asym)

80,000

Figure

Number

4

5

6

70-2R-1C-5.5X

100-3R-1C-5.5X

130-4R-1C-5.5X

150-5R-1C-5.5X

170-6R-1C-5.5X

200-9R-1C-5.5X

230-12R-1C-5.5X

390-18R-2C-5.5X

450-24R-2C-5.5X

—

2R

3R

4R

5R

6R

9R

12R

18R

24R

70

100

130

150

170

200

230

390

450

14"

17.875"

170

250

340

390

500

760

1000

1500

1950

80,000

4

5

R

RATED

8.25 KV

Catalog

Number

70-2R-1C-8.25

100-3R-1C-8.25

130-4R-1C-8.25

150-5R-1C-8.25

170-6R-1C-8.25

200-9R-1C-8.25

230-12R-1C-8.25

390-18R-2C-8.25

450-24R-2C-8.25

Old

Catalog

Number

—

Size

2R

3R

4R

5R

6R

9R

12R

18R

24R

Maximum

Continuous

Current

@ 40 deg C.

70

100

130

150

170

200

230

390

450

Dim. A

(inches)

12"

Dim. B

(inches)

15.875"

Minimum

Interrupting

Rating

RMS Amps

190

225

330

440

500

740

955

1440

1910

Max

Interrupting

Rating

RMS (Asym)

80,000

Figure

Number

4

5

FIGURE 4 FIGURE 5 FIGURE 6

Add “w”suffix to par t number for hookeye attachment.

64

R Rated Medium Voltage Fuses

Current Limiting

Dim.B

Dim.ADim.A

(2) .34" X .660 Slots

1.38" Apart

3" Dia.

(2) .34" Holes

1.38" Apart

Indicator Indicator

Dim.BDim.B

3" Dia. Indicator

Indicator

Bolt Mount “B” Inver ted Bolt “IB”

70-2R-1IB-2.75

100-3R-1IB-2.75

130-4R-1IB-2.75

150-5R-1IB-2.75

170-6R-1IB-2.75

200-9R-1IB-2.75

230-12R-1IB-2.75

390-18R-2IB-2.75

450-24R-2IB-2.75

—

2R

3R

4R

5R

6R

9R

12R

18R

24R

70

100

130

150

170

200

230

390

450

—

13"

170

250

340

390

500

760

1000

1500

1950

80,000

9

10

2.75 KV

Inverted Bolt “IB”

Catalog

Number

70-2R-1B-2.75

100-3R-1B-2.75

130-4R-1B-2.75

150-5R-1B-2.75

170-6R-1B-2.75

200-9R-1B-2.75

230-12R-1B-2.75

390-18R-2B-2.75

450-24R-2B-2.75

R

RATED

2.75 KV

Bolt Mount

“B”

Old

Catalog

Number

—

Size

2R

3R

4R

5R

6R

9R

12R

18R

24R

Maximum

Continuous

Current

@ 40 deg C.

70

100

130

150

170

200

230

390

450

Dim. A

(inches)

4.6"

7.4"

Dim. B

(inches)

13"

Minimum

Interrupting

Rating

RMS Amps

170

250

240

390

500

760

1000

1500

1950

Max

Interrupting

Rating

RMS (Asym)

80,000

Figure

Number

7

8

FIGURE 7 FIGURE 8 FIGURE 9 FIGURE 10

Littelfuse’s POWR-GARD medium voltage fuses are

available in several bolt-in mounting configurations. Contact

factor y for custom configurations

“B” Bolt mount

“BI” Bolt-In mount

“IB” Inverted-Bolt mount

Refer to illustrations for mounting dimensions.

65

Catalog

Number

70-2R-1BI-5.5

100-3R-1BI-5.5

130-4R-1BI-5.5

150-5R-1BI-5.5

170-6R-1BI-5.5

200-9R-1BI-5.5

230-12R-1BI-5.5

390-18R-2BI-5.5

450-24R-2BI-5.5

480-26R-2BI-5.5

550-30R-2BI-5.5

600-32R-2BI-5.5

650-36R-2BI-5.5

550-30R-3BI-5.5

600-32R-3BI-5.5

650-36R-3BI-5.5

700-38R-3BI-5.5

Dim.B

Dim.A

Dim.B

Dim.A

3"Dia.

Front View

.44" X .91" Slots (1.53" c.t.c.) Indicator Indicator

R

RATED

5.5 KV

Bolt In Mount “BI”

Old

Catalog

Number

—

Size

2R

3R

4R

5R

6R

9R

12R

18R

24R

26R

30R

32R

36R

30R

32R

36R

38R

Maximum

Continuous

Current

@ 40 deg C.

70

100

130

150

170

200

230

390

450

480

550

600

650

550

600

650

700

Dim. A

(inches)

3.6

7.6

Dim. B

(inches)

18"

Minimum

Interrupting

Rating

RMS Amps

170

250

340

390

500

760

1000

1500

1950

2200

2400

2650

2900

Max

Interrupting

Rating

RMS (Asym)

80,000

Figure

Number

11

12

13

70-2R-1BI-8.25

100-3R-1BI-8.25

130-4R-1BI-8.25

150-5R-1BI-8.25

170-6R-1BI-8.25

200-9R-1BI-8.25

230-12R-1BI-8.25

390-18R-2BI-8.25

450-24R-2BI-8.25

8.25 KV

Bolt-In Mount “BI”

—

2R

3R

4R

5R

6R

9R

12R

18R

24R

70

100

130

150

170

200

230

390

450

3.6

7.6

18"

190

225

330

400

500

740

955

1440

1910

80,000

11

12

Bolt-In Mount “BI”

5.5 KV

Bolt Mount “B”

70-2R-1B-5.5

100-3R-1B-5.5

130-4R-1B-5.5

150-5R-1B-5.5

170-6R-1B-5.5

200-9R-1B-5.5

230-12R-1B-5.5

390-18R-2B-5.5

450-24R-2B-5.5

550-30R-2B-5.5

600-32R-2B-5.5

650-36R-2B-5.5

—

2R

3R

4R

5R

6R

9R

12R

18R

24R

30R

32R

36R

70

100

130

150

170

200

230

390

450

550

600

650

4.6

7.4

8.4

18"

170

250

340

390

500

760

1000

1500

1950

2400

2650

2900

80,000

7

8

FIGURE 11 FIGURE 12 FIGURE 13

70-2R-1IB-5.5

100-3R-1IB-5.5

130-4R-1IB-5.5

150-5R-1IB-5.5

170-6R-1IB-5.5

200-9R-1IB-5.5

230-12R-1IB-5.5

390-18R-2IB-5.5

450-24R-2IB-5.5

550-30R-2IB-5.5

600-32R-2IB-5.5

650-36R-2IB-5.5

—

2R

3R

4R

5R

6R

9R

12R

18R

24R

30R

32R

36R

70

100

130

150

170

200

230

390

450

550

600

650

—

18"

170

250

340

390

500

760

1000

1500

1950

2400

2650

2900

80,000

9

10

5.5 KV

Inverted Bolt “IB”

66

E Rated Medium Voltage Fuses

Current Limiting

“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 proper ly applied, they can protect

against high and low value 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’s 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 cur ve.

Application Note:

Since these fuses are used for the protection of general

pur pose circuits which may contain transformers, motors,

and other equipment producing inrush and/or overload cur-

rents, 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.

CHARACTERISTICS

Voltage Rating: 2,400 volts – 38,000 volts

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.

3"DIA

Dim.A

(Clip

Center)

6.38"

Dim.B

9.75"

Catalog

Number

10E-1C-2.75

15E-1C-2.75

20E-1C-2.75

25E-1C-2.75

30E-1C-2.75

40E-1C-2.75

50E-1C-2.75

65E-1C-2.75

80E-1C-2.75

100E-1C-2.75

125E-1C-2.75

150E-1C-2.75

200E-1C-2.75

125E-2C-2.75

150E-2C-2.75

175E-2C-2.75

200E-2C-2.75

225E-2C-2.75

250E-2C-2.75

300E-2C-2.75

350E-2C-2.75

400E-2C-2.75

450E-2C-2.75

Old

Catalog

Number

LCX 10E

—

LCX 30E

LCX 40E

LCX 50E

LCX 65E

LCX 80E

LCX 100E

—

LCX 125E

LCX 150E

LCX 175E

LCX 200E

LCX 250E

LCX 300E

LCX 400E

—

Size

10E

15E

20E

25E

30E

40E

50E

65E

80E

100E

125E

150E

200E

125E

150E

175E

200E

225E

250E

300E

350E

400E

450E

Dim. A

(inches)

7"

Dim. B

(inches)

10.875"

Max

Interrupting

Rating

RMS (Asym)

80,000

Figure

Number

14

15

E

RATED

2.75 Max. KV

FIGURE 14 FIGURE 15 FIGURE 16

67

E Rated Medium Voltage Fuses

Current Limiting

Catalog

Number

10E-1C-5.5

15E-1C-5.5

20E-1C-5.5

25E-1C-5.5

30E-1C-5.5

40E-1C-5.5

50E-1C-5.5

65E-1C-5.5

80E-1C-5.5

100E-1C-5.5

125E-1C-5.5

150E-1C-5.5

175E-1C-5.5

200E-1C-5.5

125E-2C-5.5

150E-2C-5.5

175E-2C-5.5

200E-2C-5.5

250E-2C-5.5

300E-2C-5.5

350E-2C-5.5

400E-2C-5.5

450E-2C-5.5

500E-3C-5.5

550E-3C-5.5

600E-3C-5.5

Old

Catalog

Number

—

LCY 30E

LCY 40E

LCY 50E

LCY 60E

LCY 80E

LCY 100E

LCY 125E

LCY 150E

LCY 175E

LCY 200E

—

LCY 250E

LCY 300E

LCY 350E

LCY 400E

LCY 450E

—

Size

10E

15E

20E

25E

30E

40E

50E

65E

80E

100E

125E

150E

175E

200E

125E

150E

175E

200E

250E

300E

350E

400E

450E

500E

550E

660E

Dim. A

(inches)

12"

Dim. B

(inches)

15.875"

Max

Interrupting

Rating

RMS (Asym)

80,000

Diagram

14

15

16

E

RATED

5.5 Max. KV

5NLE-10E

5NLE-15E

5NLE-20E

5NLE-25E

5NLE-30E

5NLE-40E

5NLE-50E

5NLE-65E

5NLE-80E

5NLE-100E

5NLE-125E

5NLE-150E

5NLE-175E

5NLE-200E

5NLE2-225E

5NLE2-250E

5NLE2-300E

5NLE2-350E

5NLE2-400E

5NLE2-450E

LCU 30E

LCU 40E

LCU 50E

LCU 65E

LCU 80E

LCU 100E

LCU 125E

LCU 150E

LCU 175E

LCU 200E

LCU 250E

LCU 300E

LCU 350E

LCU 400E

LCU 450E

10E

15E

20E

25E

30E

40E

50E

65E

80E

100E

125E

150E

175E

200E

225E

250E

300E

350E

400E

450E

17-7/8"

80,000

14

15

14

14"

68

E Rated Medium Voltage Fuses

Current Limiting

8.25 Max. KV

8NLE-10E

8NLE-15E

8NLE-20E

8NLE-25E

8NLE-30E

8NLE-40E

8NLE-50E

8NLE-65E

8NLE-80E

8NLE-100E

8NLE2-100E

8NLE2-125E

8NLE2-150E

8NLE2-200E

8NLE2-250E

LCZ 30E

LCZ 40E

LCZ 50E

LCZ 65E

LCZ 80E

LCZ 100E

LCZ 125E

LCZ 150E

LCZ 200E

10E

15E

20E

25E

30E

40E

50E

65E

80E

100E

125E

150E

200E

250E

17-7/8"

80,000

14

15

14"

Catalog

Number

10E-1C-8.25

15E-1C-8.25

20E-1C-8.25

25E-1C-8.25

30E-1C-8.25

40E-1C-8.25

50E-1C-8.25

65E-1C-8.25

80E-1C-8.25

100E-1C-8.25

125E-1C-8.25

150E-1C-8.25

125E-2C-8.25

150E-2C-8.25

200E-2C-8.25

250E-2C-8.25

300E-2C-8.25

350E-3C-8.25

400E-3C-8.25

Old

Catalog

Number

LDZ 30E

LDZ 40E

LDZ 50E

LDZ 65E

LDZ 80E

LDZ 100E

LDZ 125E

LDZ 150E

LDZ 125E

LDZ 150E

LDZ 200E

LDZ 250E

LDZ 300E

LDZ 350Z

Size

10E

15E

20E

25E

30E

40E

50E

65E

80E

100E

125E

150E

125E

150E

200E

250E

300E

350E

400E

Dim. A

(inches)

12"

Dim. B

(inches)

15-7/8"

Max

Interrupting

Rating

RMS (Asym)

80,000

Diagram

14

15

16

E

RATED

8.25 Max. KV

Catalog

Number

10E-1C-15.5

15E-1C-15.5

20E-1C-15.5

25E-1C-15.5

30E-1C-15.5

40E-1C-15.5

50E-1C-15.5

65E-1C-15.5

80E-1C-15.5

100E-1C-15.5

65E-2C-15.5

80E-2C-15.5

100E-2C-15.5

125E-2C-15.5

150E-2C-15.5

175E-2C-15.5

200E-2C-15.5

200E-3C-15.5

250E-3C-15.5

300E-3C-15.5

Old

Catalog

Number

LDN 10E

LDN 15E

LDN 20E

LDN 25E

LDN 30E

LDN 40E

LDN 50E

LDN 65E

LDN 80E

LDN 100E

LDN 150E

LDN 175E

Size

10E

15E

20E

25E

30E

40E

50E

65E

80E

100E

65E

80E

100E

125E

150E

175E

200E

250E

300E

Dim. A

(inches)

15"

Dim. B

(inches)

18.875"

Max

Interrupting

Rating

RMS (Asym)

60,000

Figure

Number

14

15

16

E

RATED

15.5 Max. KV

69

15.5 Max. KV

15NLE-10E

15NLE-15E

15NLE-20E

15NLE-25E

15NLE-30E

15NLE-40E

15NLE-50E

15NLE-65E

15NLE-80E

15NLE-100E

15NLE2-80E

15NLE2-100E

15NLE2-125E

15NLE2-150E

15NLE2-175E

15NLE2-200E

15NLE3-150E

15NLE3-175E

15NLE3-250E

15NLE3-300E

LCN 30E

LCN 40E

LCN 50E

LCN 65E

LCN 80ES

LCN 100ES

LCN 80E

LCN 100E

LCN 125X

LCN 150E

LCN 200ED

—

10E

15E

20E

25E

30E

40E

50E

65E

80E

100E

80E

100E

125E

150E

175E

200E

150E

175E

250E

300E

23-7/8"

14

15

16

60,000

20"

Catalog

Number

15GSE-65E

15GSE-80E

15GSE-100E

15GSE2-125E

15GSE2-150E

15GSE2-175E

15GSE2-200E

Old

Catalog

Number

—

Size

65E

80E

100E

125E

150E

175E

200E

Dim. A

(inches)

18"

Dim. B

(inches)

21-7/8"

Max

Interrupting

Rating

RMS (Asym)

60,000

Figure

Number

14

15

E

RATED

15.5

Max. KV

Catalog

Number

3E-1C-38.0

7E-1C-38.0

10E-1C-38.0

15E-1C-38.0

20E-1C-38.0

25E-1C-38.0

30E-1C-38.0

40E-1C-38.0

50E-2C-38.0

65E-2C-38.0

80E-2C-38.0

Old

Catalog

Number

—

Size

3E

7E

10E

15E

20E

25E

30E

40E

50E

65E

80E

Dim. A

(inches)

27"

Dim. B

(inches)

30-5/8"

Max

Interrupting

Rating

RMS (Asym)

20,000

Figure

Number

14

15

E

RATED

38 Max. KV

Catalog

Number

15E-1C-25.8

20E-1C-25.8

25E-1C-25.8

30E-1C-25.8

40E-1C-25.8

50E-1C-25.8

65E-2C-25.8

80E-2C-25.8

100E-2C-25.8

Old

Catalog

Number

—

Size

15E

20E

25E

30E

40E

50E

65E

80E

100E

Dim. A

(inches)

21"

Dim. B

(inches)

24-5/8"

Max

Interrupting

Rating

RMS (Asym)

40,000

Figure

Number

14

15

E

RATED

25.8 Max. KV

E Rated Medium Voltage Fuses

Current Limiting

70

E Rated Medium Voltage Fuses

Current Limiting

Catalog

Number

10E-1CL-15.5

15E-1CL-15.5

20E-1CL-15.5

25E-1CL-15.5

30E-1CL-15.5

40E-1CL-15.5

50E-1CL-15.5

65E-1CL-15.5

80E-1CL-15.5

100E-1CL-15.5

125E-2CL-15.5

150E-3CL-15.5

175E-3CL-15.5

200E-3CL-15.5

225E-3CL-15.5

250E-3CL-15.5

300E-3CL-15.5

Catalog

Number

10E-1CL-5.5

15E-1CL-5.5

20E-1C-5.5

25E-1CL-5.5

30E-1CL-5.5

40E-1CL-5.5

50E-1CL-5.5

65E-1CL-5.5

80E-1CL-5.5

100E-1CL-5.5

125E-1CL-5.5

150E-1CL-5.5

225E-2CL-5.5

250E-2CL-5.5

300E-2CL-5.5

350E-2CL-5.5

400E-2CL-5.5

450E-2CL-5.5

500E-3CL-5.5

550E-3CL-5.5

600E-3CL-5.5

Catalog

Number

10E-1CL-8.25

15E-1CL-8.25

20E-1C-8.25

25E-1CL-8.25

30E-1CL-8.25

40E-1CL-8.25

50E-1CL-8.25

65E-1CL-8.25

80E-1CL-8.25

100E-1CL-8.25

125E-2CL-8.25

150E-2CL-8.25

175E-2CL-8.25

200E-2CL-8.25

225E-2CL-8.25

250E-2CL-8.25

300E-2CL-8.25

350E-3CL-8.25

4.31 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.

Old

Catalog

Number

—

Size

10E

15E

20E

25E

30E

40E

50E

65E

80E

100E

125E

150E

175E

200E

225E

250E

300E

350E

Dim. A

(inches)

17.38"

Dim. B

(inches)

16.13"

Max

Interrupting

Rating

RMS (Asym)

80,000

Figure

Number

17

18

19

E

RATED

8.25 Max. KV

Clip Lock

Old

Catalog

Number

—

Size

10E

15E

20E

25E

30E

40E

50E

65E

80E

100E

125E

150E

225E

250E

300E

350E

400E

450E

500E

550E

600E

Dim. A

(inches)

16.38"

17.38"

Dim. B

(inches)

15.13"

16.13"

Max

Interrupting

Rating

RMS (Asym)

80,000

Figure

Number

17

18

19

E

RATED

5.5 Max. KV

Clip Lock

Old

Catalog

Number

—

Size

10E

15E

20E

25E

30E

40E

50E

65E

80E

100E

125

150E

175E

200E

225E

250E

300E

Dim. A

(inches)

19.8"

22.81"

Dim. B

(inches)

18.1"

21.13"

19.1"

Max

Interrupting

Rating

RMS (Asym)

60,000

Figure

Number

17

18

19

E

RATED

15.5 Max. KV

Clip Lock

FIGURE 17 FIGURE 18 FIGURE 19

71

E Rated Potential Transformer Fuses

Current Limiting

1E-5PT-4.8

2E-5PT-4.8

1E-4PT-2.4

2E-4PT-2.4

1/2E-6PT-5.5

1E-6PT-5.5

2E-6PT-5.5

3E-6PT-5.5

5E-6PT-5.5

1/2E-8PT-5.5

1E-8PT-5.5

2E-8PT-5.5

3E-8PT-5.5

5E-8PT-5.5

10E-8PT-5.5

1E-6PT-2.75

2E-6PT-2.75

3E-6PT-2.75

1E-8PT-2.75

2E-8PT-2.75

3E-8PT-2.75

Catalog

Number

3E-4PT-6

5E-4PT-6

7E-4PT-6

10E-4PT-6

A

B

Old

Catalog

Number Size

3E

5E

7E

10E

Length

Dim. A

(inches)

4.625

Diameter

Dim. B

(inches)

0.8125

Max

Interrupting

Rating

RMS (Asym)

62,500

E

PT

600

Volt

LCD 1E-4

LCD 2E-4 1E

2E 4.625

4.625 0.8125

0.8125 40,000

40,000

2.4

Max.

KV

1E

2E

3E

1E

2E

3E

7.375

9.5

1.625

37,500

50,000

2.75

Max.

KV

LCE 1E-4

LCE 2E-4 1E

2E 5.5

5.5 0.8125

0.8125 50,000

50,000

4.8

Max.

KV

LCQ .5E

LCQ 1E

LCQ 2E

LCQ 3E

LCQ 5E

LCQ 10E

1/2E

1E

2E

3E

5E

1/2E

1E

2E

3E

5E

10E

7.375

9.5

1.625

37,500

5.5

Max.

KV

1/2E-8PT-8.25

1E-8PT-8.25

2E-8PT-8.25

3E-8PT-8.25

1/2E

1E

2E

3E

9.5

1.625

50,000

8.25

Max.

KV

1/2E-11PT-15.5

1E-11PT-15.5

2E-11PT-15.5

3E-11PT-15.5

3E-16PT-15.5

5E-16PT-15.5

LCT .5E

LCT 1E

LCT 2E

LCT 3E

1/2E

1E

2E

3E

5E

12.875

17.5

1.625

80,000

15.5

Max.

KV

1/2E-16PT-25.5

1E-16PT-25.5 LCJ 1E-4

LCJ 2E-4 1/2E

1E 17.5

17.5 1.625

1.625 43,500

43,500

25.5

Max.

KV

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 inrush must be considered.The

characteristics of the inrush, which can be matched with

a fuse’s time-current cur ve, should be available from the

transformer manufacturer.

CHARACTERISTICS

Voltage Rating: 600VAC – 25,500 VAC

Current Range: 1/2E – 10E

72

Live Par ts

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

4.9

4.85

3.63

3.75

Top Lever in

Open Position

A

Blown Fuse

Indicator

TOP

VIEW

4.66

3.08

1.50

1.56

4.00

.41 X1.06 SLOT

.78 .63

.08

.30

.31

.08

.71

1.15 .05

.78

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.

Contact factor y for additional live parts.

Part Number: 700-520-CL*

Clip Lock Design (For CL-14)

Part Number: 700-530*

* One Pair

Part Number: 700-500*

For use with all 13/16"

diameter PT fuses.

* One Pair * One Pair

For use with

all 3”diameter

fuses.

Mounting Details for Clip Lock