©June 2011 Littelfusewww.littelfuse.com
POWR-GARD® Fuse Datasheet
UL Class RK5
1
FLNR_ID/FLSR_ID SERIES INDICATOR® FUSES
250/600 VAC • Dual Element • Time Delay • 1/10 -600 Amperes
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
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/flsr
www.littelfuse.com/flnr
AMPERE RATINGS
1/10 6/10 1 8/10 4 8 30 80 225
1/8*8/10 2 4 1/29 35 90 250
15/10 0 1 2 1/4510 40 100 300
2/10 1 1/82 1/25 6/10 12 45 110 350
1/41 1/42 8/10 615 50 125 400
3/10 1 4/10 3 6 1/417 1/260 150 450
4/10 1 1/23 2/10 7 20 70 175 500
1/21 6/10 3 1/27 1/225 75** 200 600
*FLNR only. †FLNR, FLSR, FLSR_ID only. **FLNR, FLSR, FLSR_ID only
Note: For 1/10 – 30A 250 volt fuses, order non-indicating FLNR series fuses.
Recommended Fuseholders
LFR60 Series
LFR25 Series
Ordering Information
TYPE VOLTAGE SERIES AMP CATALOG
NUMBER
SYSTEM
NUMBER
NON-INDICATING 600 V FLSR 15 FLSR015 FLSR015.T
INDICATING 600 V FLSR_ID 15 FLSR015ID FLSR015.TXID
NON-INDICATING 250 V FLNR 60 FLNR060 FLNR060.T
INDICATING 250 V FLNR_ID 60 FLNR060ID FLNR060.TXID
QP
L
Specifications
Voltage Ratings: AC: 250 V (FLNR_ID); 600 V (FLSR_ID)
DC: 125 V (FLNR 1/10 – 30 A);
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: 1/10 – 600 A
Approvals: Standard 248-12, Class RK5
UL Listed (File No. E81895)
CSA Certified (File No. LR29862)
Federal Specification WF-1814
(QPL- W-F-1814)
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POWR-GARD® Fuse Datasheet
UL Class RK5
2
SHORT-CIRCUIT CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS
30 A 60 A 100 A 200 A 400 A 600 A
5,000 1,400 2,100 3,100 5,000 5,000 5,000
10,000 1,550 2,500 3,900 6,500 9,500 10,000
15,000 2,000 3,150 4,400 7, 250 10,500 14,000
20,000 2,250 3,400 5,000 8,250 12,000 16,000
25,000 2,400 3,750 5,250 9,000 12,500 16,500
30,000 2,550 4,100 5,600 9,500 13,500 18,000
35,000 2,650 4,300 5,800 9,750 14,000 19,000
40,000 2,800 4,400 6,250 10,250 15,000 20,000
50,000 3,000 5,000 6,500 10,500 16,000 21,000
60,000 3,200 5,250 7,000 11,500 17,000 23,000
80,000 3,400 5,750 7,500 12,500 19,000 25,500
100,000 3,850 6,000 8,000 13,500 21,000 27,500
150,000 4,100 7,000 9,000 15,200 24,000 31,500
200,000 4,300 7,500 9,750 16,500 26,000 34,000
Current-Limiting Effects of FLNR and FLNR_ID (250V) Fuses
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data Derived from Peak Let-Thru Curves
CLASS RK5 CURRENT-LIMITING EFFECTS
©June 2011 Littelfusewww.littelfuse.com
POWR-GARD® Fuse Datasheet
UL Class RK5
3
CLASS RK5 SERIES DIMENSIONS
AMPS
REFER
TO FIG.
NO.
SERIES
DIMENSIONS IN INCHES (mm)
A B C D E F G H J K
1
/
10
30
1
FLNR 2 (50.8) 12 (12.7) 12 (12.7) 916 (14.3) 564 (2.0) 532 (4.0) 38 (9.5)
FLSR 5 (127.0 ) 34 (19.1) 58 (15.9) 1316 (20.6) 332 (2.4) 316 (4.8) 58 (15.9)
35 – 60
1
FLNR 3 (76.2) 34 (19.1) 58 (15.9) 13 16 (20.6) 332 (2.4) 316 (4.8) 58 (15.9)
FLSR 512 (139.7) 1 (25.4) 58 (15.9) 1116 ( 27.0 ) 332 (2.4) 14 (6.4) 78 (22.2)
70 – 100
2
FLNR 578 (149.2) 1 (25.4) 1116 ( 27.0 ) 1116 ( 27.0 ) 18 (3.2) 34 (19.1) 14 (6.4) 932 (7.1) 12 (12.7)
FLSR 778 (200.0) 114 (31.8) 1116 ( 27.0 ) 1516 (33.3) 18 (3.2) 34 (19.1) 14 (6.4) 932 (7.1) 12 (12.7)
110 – 200
2
FLNR 718 (181.0) 112 (38.1) 115 32 (37.3 ) 119 32 (40.5) 316 (4.8) 118 (28.6) 716 (11.1) 932 (7.1) 11 16 (17.5)
FLSR 958 (244.5) 134 (44.5) 115 32 (3 7.3 ) 12732 (46.8) 316 (4.8) 118 (28.6) 716 (11.1) 932 (7.1) 11 16 (17.5)
225 – 400
2
FLNR 858 ( 219.1) 2 (50.8) 115 16 (49.2) 2332 (53.2) 14 (6.4) 158 (41.3) 58 (15.9) 13 32 (10.3) 15 16 (23.8)
FLSR 1158 (295.3) 212 (63.5) 2 (50.8) 219 32 (65.9) 14 (6.4) 158 (41.3) 58 (15.9) 1332 (10.3) 15 16 (23.8)
45 06 00 2
FLNR 1038 (263.5) 212 (63.5) 238 (60.3) 219 32 (65.9) 14 (6.4) 2 (50.8) 34 (19.1) 1732 (13.5) 118 (28.6)
FLSR 1338 (339.7) 3 (76.2) 21332 (61.1) 3332 (78.6) 14 (6.4) 2 (50.8) 34 (19.1) 1732 (13.5) 118 (28.6)
A
F
EC
D
GB
A
J
K
H
B
C
FD
70-600A
FIG. 1 FIG. 2
E
Dimensions in inches (mm)
©June 2011 Littelfusewww.littelfuse.com
POWR-GARD® Fuse Datasheet
UL Class RK5
4
Peak Let-Thru Curve FLSR_ID