POWR-GARD® Fuse Datasheet
© 2012 Littelfuse POWR-GARD® Productswww.littelfuse.com
Rev: 100112
1 of 2
®
250/600 VAC • Dual Element • Time Delay • 1/10 -600 A
Description
Available in both Indicating and Non-Indicating versions,
the FLNR/FLSR series of fuses set 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
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: E81895)
CSA Certified (File: LR29862)
Federal Specification WF-1814
(Q PL- W-F -1814 )
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/flsr
www.littelfuse.com/flnr
1/10 6/10 1 8/10 4 8 30 80 225
1/8*8/10 2 4 1/29 35 90 250
15/100 1 2 1/45 10 40 100 300
2/10 1 1/82 1/25 6/10 12 45 110 350
1/41 1/42 8/10 6 15 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 Fuse Holders
LFR60Series•LFR25Series
Dimensions
PleaserefertotheClassRdimensionspage2.
Peak Let-Thru Curve (600 V)
Note: For more information, see Peak Let-Thru Table
Ordering Information
amp
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
FLSR_ID
POWR-GARD® Fuse Datasheet
© 2012 Littelfuse POWR-GARD® Productswww.littelfuse.com
Rev: 100112
2 of 2
®
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
ampS
a B C D FH J K
1
/
10
–30
1
FLNR 2 (50.8) 1⁄2 (12.7) 1⁄2 (12.7) 9⁄16 (14.3) 5⁄64 (2.0) 5⁄32 (4.0) 3⁄8 (9.5) — — —
FLSR 5 (12 7.0 ) 3⁄4 (19.1) 5⁄8 (15.9) 13⁄16 (20.6) 3⁄32 (2.4) 3⁄16 (4.8) 5⁄8 (15.9) — —
—
35 – 60
1
FLNR 3 (76.2) 3⁄4 (19.1) 5⁄8 (15.9) 13⁄16 (20.6) 3⁄32 (2.4) 3⁄16 (4.8) 5⁄8 (15.9) — — —
FLSR 51⁄2 (139.7) 1 (25.4) 5⁄8 (15.9) 11⁄16 (27.0 ) 3⁄32 (2.4) 1⁄4 (6.4) 7⁄8 (22.2) — — —
70 – 100
2
FLNR 57⁄8 (149.2) 1 (25.4) 11⁄16 (27.0 ) 11⁄16 (27.0 ) 1⁄8 (3.2) 3⁄4 (19.1) —1⁄4 (6.4) 9⁄32 (7.1) 1⁄2 (12.7)
FLSR 77⁄8 (200.0) 11⁄4 (31.8) 11⁄16 (27.0 ) 15⁄16 (33.3) 1⁄8 (3.2) 3⁄4 (19.1) —1⁄4 (6.4) 9⁄32 (7.1) 1⁄2 (12.7)
110 – 200
2
FLNR 71⁄8 (181.0) 11⁄2 (38.1) 115 ⁄32 (37.3) 119 ⁄32 (40.5) 3⁄16 (4.8) 11⁄8 (28.6) —7⁄16 (11.1) 9⁄32 (7.1) 11 ⁄16 (17.5 )
FLSR 95⁄8 (244.5) 13⁄4 (44.5) 115 ⁄32 (37.3 ) 127⁄32 (46.8) 3⁄16 (4.8) 11⁄8 (28.6) —7⁄16 (11.1) 9⁄32 (7.1) 11 ⁄16 (17.5 )
225 – 400
2
FLNR 85⁄8 ( 219.1) 2 (50.8) 115 ⁄16 (49.2) 23⁄32 (53.2) 1⁄4 (6.4) 15⁄8 (41.3) —5⁄8 (15.9) 13 ⁄32 (10.3) 15 ⁄16 (23.8)
FLSR 115⁄8 (295.3) 21⁄2 (63.5) 2 (50.8) 219 ⁄32 (65.9) 1⁄4 (6.4) 15⁄8 (41.3) —5⁄8 (15.9) 13 ⁄32 (10.3) 15 ⁄16 (23.8)
450 – 600 2
FLNR 103⁄8 (263.5) 21⁄2 (63.5) 23⁄8 (60.3) 219 ⁄32 (65.9) 1⁄4 (6.4) 2 (50.8) —3⁄4 (19.1) 17⁄32 (13.5) 11⁄8 (28.6)
FLSR 133⁄8 (339.7) 3 (76.2) 213⁄32 (61.1) 33⁄32 (78.6) 1⁄4 (6.4) 2 (50.8) —3⁄4 (19.1) 17⁄32 (13.5) 11⁄8 (28.6)
A
F
EC
D
GB
A
J
K
H
B
C
FD
70-600A
FIG. 1 FIG. 2
E
Dimensions
