Product Overview
POWR-GARD
®
Fuse Datasheet
© 2016 Littelfuse POWR-GARD
®
Products
Rev: 021916
littelfuse.com
1 of 2
CLASS RK5 – FLNR_ID • FLSR_ID SERIES INDICATOR
®
FUSES
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
• Transformers
• 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
(QPL- W-F-1814)
Web Resources
Download TC Curves, CAD drawings and other technical
information: littelfuse.com/flsr
littelfuse.com/flnr
AMPERE RATINGS
1
/
10
6
/
10
1
8
/
10
4 8 30 80 225
1
/
8
*
8
/
10
2 4
1
/
2
9 35 90 250
15
/
100
1 2
1
/
4
5 10 40 100 300
2
/
10
1
1
/
8
2
1
/
2
5
6
/
10
12 45 110 350
1
/
4
1
1
/
4
2
8
/
10
6 15 50 125 400
3
/
10
† 1
4
/
10
3 6
1
/
4
17
1
/
2
60 150 450
4
/
10
1
1
/
2
3
2
/
10
7 20 70 175 500
1
/
2
1
6
/
10
3
1
/
2
7
1
/
2
25 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
LFR60 Series • LFR25 Series
Dimensions
Please refer to the Class R dimensions page 2.
Peak Let-Thru Curve (600 V)
Note: For more information, see Peak Let-Thru Table
Ordering Information
TYPE VOLT SERIES AMP
CATALOG
NUMBER
ORDERING
NUMBER
NON-INDICATING 600 FLSR 15 FLSR015 FLSR015.T
INDICATING 600 FLSR_ID 15 FLSR015ID FLSR015.TXID
NON-INDICATING 250 FLNR 60 FLNR060 FLNR060.T
INDICATING 250 FLNR_ID 60 FLNR060ID FLNR060.TXID
QP
L
FLSR_ID