LLNRK-ID Datasheet, PDF (1/3 Pages) Littelfuse – CLASS RK1-LLNRK LLSRK LLSRK ID SERIES FUSES

POWR-GARD^® Fuse Datasheet
Class RK1 – LLNRK • LLSRK • LLSRK_ID Series FUSES
250/600 VAC • Dual Element • Time-Delay • ¹/10-600 A
QPL
Description
RK1 fuses are extremely current-limiting fuses meaning they
greatly reduce or eliminate damage to circuits and equipment under
short-circuit conditions. Replacing existing Class H, K and RK5 fuses
with RK1 fuses is one of the easiest ways to immediately improve
the protection of plant workers and equipment.
Applications
• All general purpose circuits
• Motors
• Transformers
• Safety upgrades
Features/Benefits
• POWR-PRO Performance
• Indication available
• Dual-element design
• Extremely Current-Limiting
• IEC Type 2 “No Damage” protection to IEC and NEMA
type motor starters
• Indicating and din mount fuse holders available
Specifications
Voltage Ratings
Interrupting Ratings
Ampere Range
Approvals
600 VAC/300 VDC (LLSRK/LLSRK_ID)
250 VAC/125 VDC (LLNRK)
AC: 2 00 kA rms symmetrical
300 kA rms symmetrical
(Littelfuse self-certified)
DC: 20 kA
1/10 – 600 A
AC: S tandard 248-12, Class RK1
UL Listed (File: E81895)
CSA Certified (File: LR29862)
DC: Littelfuse self-certified
Federal Specification WF-1814
(QPL- W-F-1814)
Recommended Fuse Holders
LFR60 Series • LFR25 Series
Ordering Information
Ampere ratings
1_/10
1
2 ⁸/10
6 ¹/4
25
80
250
/¹⁵ 100
1 ¹/8
3
7
30
90
300
2_/10
1 ¹/4
3 ²/10
8
35
100
350
1_/4
1 ⁴/10
3 ¹/2
9
40
110
400
3_/10
1 ⁶/10
4
10
45
125
450
4_/10
1 ⁸/10
4 ¹/2
12
50
150
500
1_/2
2
5
15
60
175
600
6_/10
2 ¹/4
5 ⁶/10
17 ¹/2
70
200
8_/10
2 ¹/2
6
20
75*
225
Note: All LLSRK_ID fuses rated 1 amp and above are Indicator^® fuses.
*75 A is only available for the 600 V.
600 V
type
Indicating
Non-indicating
series
llsrk_ID
LLSRK
amperage
60
60
Catalog
Number
LLSRK060ID
LLSRK060
Ordering
Number
LSRK060.TXID
LSRK060.T
250 V
type
Non-indicating
series amperage
LLNRK
80
Catalog
Number
LLNRK080
Ordering
Number
LNRK080.V
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: L ittelfuse.com/llsrk
Littelfuse.com/llnrk
Dimensions
Please refer to the Class R dimensions page 3.
Peak Let-Thru Curve (600 V)
LLSRK
1000000
100000
10000
1000
100
AVAILABLE FAULT CURRENT
SYMMETRICAL R.M.S. AMPERES
Note: For more information, see Peak Let-Thru Table
500 A
400 A
200 A
100 A
60 A
30 A
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© 2013 Littelfuse POWR-GARD^® Products
Rev: 040913