21

Consult Littelfuse web site for more information

www .littelfuse .com

Electr onic

Over curr ent

Pr otection

20

Consult Littelfuse web site for more information

www .littelfuse .com

Ordering Information

10 Minute

Catalog

System

Color

Rating

Number

Number

Code

100mA

70P

70P00000Z

Grey/White

150mA

70R

70R00000Z

Red/White

180mA

70E

70E00000Z

Yellow

200mA

70X

70X00000Z

Black

250mA

70F

70F00000Z

Violet

250mA

70K

70K00000Z

Violet/White

350mA

70S

70S00000Z

Gray

500mA

70G

70G00000Z

Red

750mA

70H

70H00000Z

Brown

1.33A

70A

70A00000Z

White

2A

70B

70B00000Z

Orange

3A

70C

70C00000Z

Blue

3.5A

70J

70J00000Z

Black/White

5A

70D

70D00000Z

Green/Black

8A

70M

70M00000Z

Tan/White

10A

70N

70N00000Z

Yellow/Purple

The 70 Series alarm indicating fuses are

designed for use in telecommunications

equipment. A color-coded tip provides

visual identification of the ampere rating

and the fuse status.

Features

•

Color coded tip

•

Rated 125 VAC, 300 VDC

Specifications

Approvals:

UL Recognized

Interrupting Ratings:

1000 amperes @ 125 VAC

1000 amperes @ 300 VDC

Electr onic

Over curr ent

Pr otection

Alarm Indicating Fuse

70 Series

Specifications

Approvals:

UL Recognized, CSA Certified

Short Circuit Capabilities

(UL 1459/UL 1950 3rd ed.)

40 amperes @ 600 VAC

7 amperes @ 600 VAC

2.2 amperes @ 600 VAC

Interrupting Ratings:

50 amperes @ 250 VAC

Materials:

Body:

Ceramic

Terminators:

Silver-plated brass caps

Ordering Information

Nominal

Nominal

Catalog

Ampere

Voltage

Resistance

Number

Rating

Rating

(Cold

0461 .500

1/2

250

.56

.84

0461 1.25

1-1/4

250

.110

Features

•

Surface mount overcurrent protection

from lightning and power cross

•

Meets UL1459/1950 power cross

requirements stand alone

•

Ideal for use in telecommunications

equipment including modems,

fax machines, desktop phones,

answering machines and line cards

•

Complies with Bellcore GR-1089-CORE

and FCC 47 Part 68 surge specifications

Telecom Surface Mount Fuse

®

461 Series

Electrical Specifications

% of Ampere

Opening Time

Rating

Minimum / Maximum

100

4 hrs. / —

250

1 sec. /120 sec.

3.43

(.135")

3.25

(.128")

3.12

(.123")

3.12

(.123")

10.10

(.397")

6.10

(.240")

12.6

(.496")

Dimensions

Environmental/Lightning Surge Requirements

Source

Duration/

Surge

Repetitions

Rating

Standard/

Voltage

Wave Form

Current

(Each

for Compliance

Test

(Vpk)

(µSec.)

(A)

Polarity)

600

10 x 1000

100

25

1.25A

1000

10 x 360

100

25

1.25A

1000

10 x 1000

100

25

1.25A

2500

2 x 10

500

10

1.25A

1000

10 x 360

25

5

0.5, 1.25A

5000

2 x 10

500

1

1.25A

FCC 47 Part 68

800

10 x 560

100

1

1.25A

Type A Metallic

FCC 47 Part 68

1500

10 x 160

200

1

1.25A

Type A Longitudinal

FCC 47 Part 68

1000

voltage 9 x 720

25

1

0.5, 1.25A

Type B Metallic

current 5 x 320

FCC 47 Part 68

1500

voltage 9 x 720

37.5

1

0.5, 1.25A

Type B Longitudinal

current 5 x 320

Overvoltage/AC Power Fault (Power Cross) Requirements:

Source

Surge

Rating

Standard/

Voltage

Current

for Compliance

Test

(VAC)

(A)

Duration

GR-1089

1000

5

0.5 sec.

1.25A

GR-1089

600

5 sec.

1.25A

600

40

1.5 sec.

0.5, 1.25A

GR-1089

600

7

5 sec.

0.5, 1.25A

GR-1809

100-600

2.2

30 min.

0.5, 1.25A

GR-1809

277

25

15 min.

0.5, 1.25A

120

25

30 min.

0.5, 1.25A

recommended as actual application and compliance testing will produce random closing angle surge conditions.

Actual circuit resistance may enhance equipment performance under surge conditions.