Littelfuse POWR-GARD Fuse Catalog Page

POWR-GARD® Fuse Datasheet

QP

L

UL Class RK5

FLNR_ID/FLSR_ID SERIES INDICATOR® FUSES

250/600 VAC • Dual Element • Time Delay • 1/10-600 Amperes

Specifications

Voltage Ratings: AC: 250 V (FLNR_ID); 600 V (FLSR_ID)
DC: 125 V (FLNR
125 V (FLNR_ID 35 – 600 A);
300 V (FLSR_ID)

Interrupting Ratings: AC: 200 kA rms symmetrical
300 kA rms symmetrical
(Littelfuse self-certified)
DC: 20 kA

Ampere Range:
Approvals: Standard 248-12, Class RK5

UL Listed (File No. E81895)
CSA Certified (File No. LR29862)
Federal Specification WF-1814
(Q P L- W-F -1814 )

1

/10 – 600 A

1

/10 – 30 A);

Description

Available in both Indicating and Non-Indicating versions, the
FLNR/FLSR series of fuses sets the standard for general
purpose fuses. The dual element design provides advanced
short circuit and overload protection. FLSR series fuses
provide excellent protection for all types of circuits especially
those containing motors.

Applications

• Service entrance switches

• Switchboard mains and feeders

• Motor control central mains and motor branch circuits

• All general purpose circuits

Features/Benefits

• Indication

• Dual element design

• Available without indication

• Current limiting

Ordering Information

1

1

15

2

3

/10† 1 4/

4

*FLNR only. †F LNR, FLSR, FLSR_ID only. **FLNR, FLSR, FLSR_ ID only
Note: For

6

/

/8*

/
/

1

/

1

10

100

10

/

10

/

10

/

8

10

/
1 2 1/

1 1/82 1/25 6/

4

1 1/42 8/

10

1 1/23 2/

2

1 6/103 1/27 1/

1

/10 – 30A 250 volt fuses, order non-indicating FL NR series fuses.

TYPE VOLTAGE SERIES AMP

NON-INDICATING 600 V FLSR 15 FL SR 015 FLSR015.T
INDICATING 600 V FLSR_ID 15 FLSR015ID FLSR015.TXID
NON-INDICATING 250 V FLNR 60 FLNR060 FLNR 0 6 0.T
INDICATING 250 V FLNR_ID 60 FLNR060ID FLNR060.TXID

AMPERE R ATINGS

10

1 8/

2 4 1/

4 8 30 80 225

2

4

5 10 40 10 0 300

10

6 15 50 125 400

9 35 90 250

10

12 45 110 350

3 6 1/417 1/260 150 450

10

7 20 70 175 500

2

25 75

**

CATALOG

NUMBER

200 600

SYSTEM

NUMBER

Web Resources

TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/flsr

www.littelfuse.com/flnr

Recommended Fuseholders

LFR60 Series
LFR25 Series

1

©June 2011 Littelfusewww.littelfuse.com

POWR-GARD® Fuse Datasheet

UL Class RK5

CLASS RK5 CURRENT-LIMITING EFFECTS

Current-Limiting Effects of FLNR and FLNR_ID (250V) Fuses

APPA RENT RMS SYMMETRICA L CURRE NT F OR VARIOUS FUSE R ATINGS

SHORT-CIRCUIT CURRENT*

30 A 60 A 100 A 20 0 A 400 A 600 A

5,000

10,000

15,000

20,000

25,000

30,000

35,000

40,000

50,000

60,000

80,000

100,000

150,000

200,000

1,4 00 2,10 0 3,10 0 5,000 5,000 5,000

1,5 5 0 2,500 3,900 6,500 9,500 10,000

2,000 3,15 0 4,400 7, 25 0 10,500 14,000

2,250 3,400 5,000 8,250 12,000 16,000

2,400 3,750 5,250 9,000 12,500 16,500

2,550 4,100 5,600 9,500 13,500 18,000

2,650 4,300 5,800 9,750 14,000 19,000

2,800 4,400 6,250 10,250 15,000 20,000

3,000 5,000 6,500 10,500 16,000 21,000

3,200 5,250 7,000 11,500 17,000 23,000

3,400 5,750 7,500 12,500 19,000 25,500

3,850 6,000 8,000 13,500 21,000 27,500

4,10 0 7,000 9,000 15,200 24,000 31,500

4,300 7,500 9,750 16,500 26,000 34,000

*Prospective RMS Symmetrical Amperes Shor t-Cir cuit Current

Note: Data Derived from Pe ak Let-Thru Curves

2

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