FLSR Datasheet PDF - Littelfuse

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FLSR
Littelfuse

Part Number FLSR
Description FLNR/FLSR Class RK5 Fuses
Page 1 Pages


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FLNR/FLSR Class RK5 Fuses
250/600 VAC I Dual-Element, Time-Delay I 1/10 – 600 Amperes
www.DataSheet4U.com
Littelfuse FLNR/FLSR series fuses have been the superior
UL Class RK5 dual-element time-delay fuses, and are the
most widely used class of fuses. FLNR/FLSR series fuses
provide excellent protection for all types of circuits especially
those containing motors. However, users and specifiers
should consider the significant benefits offered by Indicator
fuses. Complete information on these fuses may be found in
this section of this catalog.
APPLICATIONS
Service entrance switches
Switchboard main and feeder switches
Motor control center mains and motor branch circuits
Individual fused combination motor controllers
Distribution panelboards
Industrial control panels
Protection of fully-rated panelboards and loadcenters
All general purpose circuits
SAFETY
I 200,000 A.I.R. — Reliable interruption of all overcurrents
up to 200,000 amperes.
I Faster acting short circuit protection than any non-current
limiting mechanical protective device.
RELIABILITY
I Accurate and reliable — Automated, precision manufac-
tured and assembled parts ensure accurate, consistent
response to overloads and short circuits.
SPECIFICATIONS
Voltage Ratings: AC: 250 Volts (FLNR);
600 Volts (FLSR)
DC: 125 Volts (FLNR)
300 Volts (FLSR)
Interrupting Ratings: AC: 200,000 amperes rms symmetrical
DC: 20,000 amperes
Ampere Range: 1/10 – 600 amperes
Approvals: Standard 248-12, Class RK5
UL Listed (File No: E81895)
CSA Certified (File No: LR29862)
MSHA 300 Volt Listing (FLSR)
QPL: Federal Specification WF-1814
AMPERE RATINGS
⁄ ⁄1 6
10 10
1810 4
8
30 80
18
8
10
2
412 9
35 90
15
100
1
214 5 10 40 100
2
10
118
212
5610 12
45 110
14 114 2810 6 15 50 125
3
10
**
1410
3
614 1712 60 150
4
10
112
3210
7
20 70 175
12 1610 312 712
**FLNR only, *FLSR only
25
75* 200
Example part number (series & amperage): FLSR100
225
250
300
350
400
450
500
600
RECOMMENDED FUSE BLOCKS
LR250 series (for FLNR series fuses)
LR600 series (for FLSR series fuses)
Refer to Fuse Block section of this catalog for additional
information.
DIMENSIONS
Refer to FLNR_ID series for FLNR dimensions and
FLSR_ID series for FLSR dimensions.
LONGER EQUIPMENT LIFE
I Reduced damage to equipment caused by heating
and magnetic forces of short circuits.
I Equipment runs cooler with low-resistance
dual-element fuses.
31



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FLSR FLNR/FLSR Class RK5 Fuses FLSR
Littelfuse
FLSR pdf

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