General Purpose Fuses
NLN/NLS Class K5 Fuses
250/600 VAC • “One-Time” • 1 – 600 Amperes
However, to obtain the added benefits of time-delay, current-limitation, and
higher interrupting rating, consider the use of POWR-PRO
®
FLNR_ID and
FLSR_ID Indicator
®
fuses for circuits up to 600 volts. The user gets all the
benefits of time-delay RK5 fuses plus the added benefits of an indicating
fuse that shows when it has opened. Complete information on these
fuses may be found in the POWR-PRO fuse section of this catalog. For
circuits up to 250 volts, see FLNR fuses in this section of the catalog.
General Purpose Fuses
Applications
General purpose residential and commercial circuits with little or no
motor load.
Resistive heating loads.
Economical
• For use in applications where lowest initial cost is the major consideration.
Safety
• 50,000 A.I.R., Class K5 — Adequate interrupting capacity for
residences and many smaller facilities.
NOTE: NLKP series fuses have limited interrupting rating and should be
used only where available short-circuit current is known to be less than the
fuse interrupting rating. Where available fault current is unknown, where
it exceeds NLN/NLS interrupting rating, or where it may increase in the
future, 200,000 ampere interrupting rating Littelfuse POWR-PRO
FLNR_ID/FLSR_ID Indicator fuses and FLNR/FLSR series fuses provide
superior protection for all motor and general purpose circuits containing
inductive loads.
NLN and NLS series fuses provide low cost protection for general purpose
feeder and branch circuits when available short-circuit currents are less
than 50,000 amperes. They replace all Class H fuses which have only a
10,000 ampere interrupting rating. They are suitable for use in many resi-
dential and smaller commercial and industrial applications.
NLKP series fuses are Canadian “Code” fuses specifically designed to
meet Canadian Electrical Code Type P fuse requirements for residential
use. They have a 10,000 ampere interrupting rating.
Specifications
Voltage Ratings:
(NLN, NLKP)
(NLS)
(NLN)
(NLS 35 – 60A)
(NLS 8 – 30A)
(NLS 225 – 600A)
600 Volts (NLS 1 – 7A)
(NLS 70 – 200A)
AC: 50,000 amperes rms symmetrical (NLN/NLS)
10,000 amperes (NLKP)
DC: 20,000 amperes (NLN/NLS 1 – 60A)
50,000 amperes (NLN/NLS 70 – 600A)
1– 600 amperes (NLN/NLS)
15 – 60 amperes (NLKP)
NLN/NLS: Standard 248-9, Class K5
UL Listed (File No: E81895)
CSA Certified (File No: LR29862)**
**Excludes NLN 15-60A
NLKP:
Standard 248-6, Class H
UL Listed (File No: E81895)
CSA Certified (File No: LR29865)
Meets CSA “Type P” requirements
AC: 250 Volts
600 Volts
DC: 250 Volts
400 Volts
500 Volts
Ampere Ratings
1
2
3
4
5
6
7
8
10
12
*15
*20
*25
*30
*35
*40
*45
*50
*60
70
80
90
100
110
125
150
175
200
225
250
300
350
400
450
500
600
Interrupting Ratings:
* NLKP series available only in those amperages preceded by an asterisk.
Example part number (series & amperage): NLS 125
Recommended Fuse Blocks
LH250 series (for NLN and NLKP series fuses)
LH600 series (for NLS series fuses)
Refer to the Blocks & Holders section of this catalog for additional information.
Ampere Range:
Approvals:
36
www.littelfuse.com
© 2005 Littelfuse
•
POWR-GARD
™
Products Catalog
General Purpose Fuses
NLN/NLS Class K5 Fuses
250/600 VAC • “One-Time” • 1 – 600 Amperes
A
A
B
FIG. 2
Dimensions In Inches (mm in parentheses)
A
2 (50.8)
5 (127.0)
3 (76.2)
5
1
⁄
2
(139.7)
5
7
⁄
8
(149.2)
7
7
⁄
8
(200.0)
7
1
⁄
8
(181.0)
9
5
⁄
8
(244.5)
8
5
⁄
8
(219.1)
11
5
⁄
8
(295.3)
10
3
⁄
8
(263.5)
13
3
⁄
8
(339.7)
12
C
D
C
F
D
E
G
B
FIG. 1
Refer to
Fig. No.
1
General Purpose Fuses
Amperes
Series
NLN
NLKP
NLS
NLN
NLKP
NLS
NLN
NLS
NLN
NLS
NLN
NLS
NLN
NLS
B
⁄ (12.7)
⁄ (19.1)
⁄ (19.1)
12
C
⁄ (12.7)
⁄ (15.9)
⁄ (15.9)
9 16
13 16
13 16
D
⁄
(14.3)
(20.6)
(20.6)
(27.0)
(27.0)
(33.3)
(39.7)
(46.8)
(53.2)
(65.9)
(65.9)
(78.6)
E
—
—
—
—
18
⁄ (3.2)
18
⁄ (3.2)
3 16
⁄ (4.8)
3 16
⁄ (4.8)
14
⁄ (6.4)
14
⁄ (6.4)
14
⁄ (6.4)
14
⁄ (6.4)
F
—
—
—
—
3 4
⁄ (19.1)
3 4
⁄ (19.1)
18
1 ⁄ (28.6)
1
1
⁄
8
(28.6)
1
5
⁄
8
(41.3)
1
5
⁄
8
(41.3)
2 (50.8)
2 (50.8)
G
—
—
—
—
1
5
⁄
16
(33.3)
1
9
⁄
16
(39.7)
1
7
⁄
8
(47.6)
2
3
⁄
32
(53.2)
2
13
⁄
32
(61.1)
2
7
⁄
8
(73.0)
2
7
⁄
8
(73.0)
3
7
⁄
16
(87.3)
1 – 30
3 4
3 4
5 8
5 8
5 8
⁄
⁄
35 – 60
70 – 100
110 – 200
225 – 400
450 – 600
1
2
2
2
2
1 (25.4)
1 (25.4)
1
1
⁄
4
(31.8)
1
1
⁄
2
(38.1)
1
3
⁄
4
(44.5)
2 (50.8)
2
1
⁄
2
(63.5)
2
1
⁄
2
(63.5)
3 (76.2)
⁄ (15.9)
1 (25.4)
1 (25.4)
1
3
⁄
8
(34.9)
1
3
⁄
8
(34.9)
1
7
⁄
8
(47.6)
1
7
⁄
8
(47.6)
2
1
⁄
4
(57.2)
2
1
⁄
4
(57.2)
1
1
⁄
16
1
1
⁄
16
1
5
⁄
16
1
9
⁄
16
1
27
⁄
32
2
3
⁄
32
2
19
⁄
32
2
19
⁄
32
3
3
⁄
32
200A
200A
400A
100A
60A
600A
15A
20A
25A
30A
1000
800
600
400
300
200
1000
800
600
400
300
200
100
80
60
40
30
20
100
80
60
40
30
20
TIME IN SECONDS
TIME IN SECONDS
10
8
6
4
3
2
10
8
6
4
3
2
1
.8
.6
.4
.3
.2
1
.8
.6
.4
.3
.2
.1
.08
.06
.04
.03
.02
.1
.08
.06
.05
.04
.03
.02
.01
.01
40
60
100
80
200
300
400
600
1000
800
2000
3000
4000
6000
10000
8000
20000
30000
40000
60000
100000
80000
6
5
10
8
20
30
CURRENT IN AMPERES
CURRENT IN AMPERES
© 2005 Littelfuse
•
POWR-GARD
™
Products Catalog
www.littelfuse.com
100A
400A
15A
20A
25A
30A
600A
60A
NLN
NLS
40
60
100
80
200
300
400
600
1000
800
2000
3000
4000
6000
10000
8000
20000
30000
40000
60000
100000
80000
6
5
10
8
20
30
37
淘e淘
