ETC FLSR090

FLNR/FLSR Class RK5 Fuses
250/600 VAC
■
Dual-Element, Time-Delay
■
1/10 – 600 Amperes
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: AC: UL Listed Class RK5 fuses per UL 248
(formerly UL 198E)
(File No. E81895)
CSA Certified HRCI-R per C22.2 #106
(File No. LR29862)
DC: FLNR: UL Listed 125 Volts per UL 198L
(File No. E81895)
FLSR: UL Listed 300 Volts per UL 198L
(File No. E81895)
MSHA 300 Volt listing
GENERAL
PURPOSE
FUSES
Federal Specification No. WF1814 (QPL)
AMPERE RATINGS
6
⁄10
⁄10
18⁄10
4
8
30
80
8
⁄8
⁄10
2
41⁄2
9
35
90
15
⁄100
1
21⁄4
5
10
40
100
2
⁄10
11⁄8
21⁄2
56⁄10
12
45
110
1
1
8
⁄4
1 ⁄4
2 ⁄10
6
15
50
125
3 **
⁄10
14⁄10
3
61⁄4
171⁄2
60
150
4
1
2
⁄10
1 ⁄2
3 ⁄10
7
20
70
175
1
⁄2
16⁄10
31⁄2
71⁄2
25
75*
200
**FLNR only, *FLSR only
Example part number (series & amperage): FLSR100
1
1
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
■
■
200,000 A.I.R. — Reliable interruption of all overcurrents
up to 200,000 amperes.
Faster acting short circuit protection than any non-current
limiting mechanical protective device.
RELIABILITY
■
30
Accurate and reliable — Automated, precision manufactured and assembled parts ensure accurate, consistent
response to overloads and short circuits.
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.
LONGER EQUIPMENT LIFE
■
■
Reduced damage to equipment caused by heating and
magnetic forces of short circuits.
Equipment runs cooler with low-resistance dual-element
fuses.
FLNR/FLSR Class RK5 Fuses
250/600 VAC
■
Dual-Element, Time Delay
■
1/10 – 600 Amperes
A
A
F
G
K
B
D
1/10 – 30
35 – 60
70 – 100
110 – 200
225 – 400
450 – 600
D
G
J
C
GENERAL
PURPOSE
FUSES
70-600A
FIG. 1
REFER TO
FIG. NO.
F
B
H
E
AMPERES
E
C
FIG. 2
DIMENSIONS IN INCHES (mm in parentheses)
SERIES
A
B
C
D
E
F
G
H
J
K
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
(127.0)
3/4
(19.1)
5/8
(15.9)
13/16
(20.6)
3/32
(2.4)
3/16
(4.8)
5/8
(15.9)
—
—
—
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
5-1/2
(139.7)
1
(25.4)
5/8
(15.9)
1-1/16
(27.0)
3/32
(2.4)
1/4
(6.4)
7/8
(22.2)
—
—
—
FLNR
5-7/8
(149.2)
1
(25.4)
1-1/16
(27.0)
1-1/16
(27.0)
1/8
(3.2)
3/4
(19.1)
1-1/4
(31.8)
1/4
(6.4)
9/32
(7.1)
1/2
(12.7)
FLSR
7-7/8
(200.0)
1-1/4
(31.8)
1-1/16
(27.0)
1-5/16
(33.3)
1/8
(3.2)
3/4
(19.1)
1-1/2
(38.1)
1/4
(6.4)
9/32
(7.1)
1/2
(12.7)
FLNR
7-1/8
(181.0)
1-1/2
(38.1)
1-15/32
(37.3)
1-19/32
(40.5)
3/16
(4.8)
1-1/8
(28.6)
1-27/32
(46.8)
7/16
(11.1)
9/32
(7.1)
11/16
(17.5)
FLSR
9-5/8
(244.5)
1-3/4
(44.5)
1-15/32
(37.3)
1-27/32
(46.8)
3/16
(4.8)
1-1/8
(28.6)
2-3/32
(53.2)
7/16
(11.1)
9/32
(7.1)
11/16
(17.5)
FLNR
8-5/8
(219.1)
2
(50.8)
1-15/16
(49.2)
2-3/32
(53.2)
1/4
(6.4)
1-5/8
(41.3)
2-11/32
(59.5)
5/8
(15.9)
13/32
(10.3)
15/16
(23.8)
FLSR
11-5/8
(295.3)
2-1/2
(63.5)
2
(50.8)
2-19/32
(65.9)
1/4
(6.4)
1-5/8
(41.3)
2-27/32
(72.2)
5/8
(15.9)
13/32
(10.3)
15/16
(23.8)
FLNR
10-3/8
(263.5)
2-1/2
(63.5)
2-3/8
(60.3)
2-19/32
(65.9)
1/4
(6.4)
2
(50.8)
2-27/32
(72.2)
3/4
(19.1)
17/32
(13.5)
1-1/8
(28.6)
FLSR
13-3/8
(339.7)
3
(76.2)
2-13/32
(61.1)
3-3/32
(78.6)
1/4
(6.4)
2
(50.8)
3-11/32
(84.93)
3/4
(19.1)
17/32
(13.5)
1-1/8
(28.6)
1
1
2
2
2
2
31