36

RLN/RLS Class H Fuses

SPECIFICATIONS

Voltage Ratings: AC: 250 Volts (RLN); 600 Volts (RLS)

Interrupting Ratings: AC: 10,000 amperes rms symmetrical

Ampere Range: 1 – 600 amperes

Approvals: Standard 248-6, Class H

UL Listed (File No: E81895)

CSA Certified (File No: LR29862)

FUSE LINKS: To order, specify LKN (250V) or LKS (600V)

plus ampere rating shown below.

AMPERE RATINGS

Example part number (series & amperage): RLN 20

RECOMMENDED FUSE BLOCKS

LH250 series (for RLN series fuses)

LH600 series (for RLS series fuses)

Refer to Fuse Block section of this catalog for

additional information.

Littelfuse RLN/RLS series renewable fuses are a quality

product that have traditionally been used to provide low cost

protection of general purpose feeder and branch circuits

where available short-circuit currents do not exceed 10,000

amperes. However, generally increased levels of available

fault current and the distinct possibility that renewable fuses

may be improperly renewed, rendering them unsafe, have all

but eliminated the use of these fuses in new applications. In

addition, escalating labor costs and increasing automation,

which makes downtime very expensive, have greatly reduced

or eliminated the cost savings attributed to renewable fuses.

and FLNR series for 250 volt and below circuits. Complete

in this section of the catalog.

COST CONSIDERATIONS

I

When comparing the cost of using renewable fuses with the

cost of other fuses, the labor required for replacing links

and the cost of additional downtime should be included.

CAUTIONS

I

Renewable fuses should only be used where short circuit

currents are known to be less than 10,000 amperes, and

where correct replacement of open links is assured.

I

After disassembly of fuse, examine carefully. Discard

any fuses which show evidence of weakened tube or

damaged components.

I

Remove all link residue from fuse tube.

I

Carefully clean all contact surfaces, and remove metal

spatter from all surfaces.

I

Install the proper rated fuse link and tighten all

connections securely.

I

Visually examine fuses for correct alignment of blades.

DIMENSIONS

I

For dimensions, please refer to NLN series for RLN

dimensions and NLS series for RLS dimensions.

1

2

3

4

5

6

8

10

12 **

15

20

25

30

35

40

45

50

60

70

80

90

100

110

125

150

175

200

225 *

250 *

300 *

350 *

400 *

450 *

500 *

600 *

*These ampere ratings require two links per fuse.

**RLS Only.