Low-Peak™ Class L
KRP-C — 600Vac/300Vdc, 601-2000A, Time-Delay Fuses
Dimensions - in
All other tolerances (± 0.02)
All Slots and Holes
0.63" (±0.03)
8.63"
(± 0.09)
801
601
6.75"
5.75" to
to
10.75"
1200A
800A
(± 0.09)
1350
to
1600A
1800
to
2000A
3.75"
Description:
Ultimate protection Class L current-limiting,
time-delay fuses. Time-delay – 4 seconds (minimum) at 500%
of rated current.
Catalog Symbol:
KRP-C-(amp)SP
Ratings:
Volts — 600Vac, 300Vdc
Amps — 601-2000A*
IR — 300kA Vac RMS Sym.
— 100kA Vdc
* Use KRP-CL fuses for current ratings from 225 to 600 amps.
0.38"
0.38"
0.44"
0.5"
Terminal:
Width (± 0.06)
Thickness (± 0.03)
2"
2.5"
2.53"
Max.
2"
2.5"
2.78"
Max.
2.38"
3"
3.03"
Max.
2.75"
3.5"
3.53"
Max.
Agency Information:
CE, UL Listed, Guide JDDZ, File E4273
CSA Certified, Class 1422-02, File 53787,
Class L per CSA C22.2, No. 248.10
RoHS Compliant
Catalog Numbers (amps)
KRP-C-601SP
KRP-C-650SP
KRP-C-700SP
KRP-C-750SP
KRP-C-800SP
KRP-C-801SP
KRP-C-900SP
KRP-C-1000SP
KRP-C-1100SP
KRP-C-1200SP
KRP-C-1350SP
KRP-C-1400SP
Carton Qty.
1
KRP-C-1500SP
KRP-C-1600SP
KRP-C-1800SP
KRP-C-1900SP
KRP-C-2000SP
Carton Quantity:
Amp Rating
601-2000
Features:
• Industry's only UL Listed and CSA Certified fuse with a
300kA interrupting rating that allows for simple, worry-free
installation in virtually any application.
• Fast short-circuit protection and dual-element, time-delay
performance provide ultimate protection.
• Reduces existing fuse inventory by up to 33% when
upgrading to Low-Peak fuses.
• Consistent 2:1 ampacity ratios for all Low-Peak fuses make
selective coordination easy.
• Time-delay for close sizing load.
• Current-limiting action of the fuse generally affords
considerable reduction in bus bracing.
• All-purpose silver-linked fuse for both overload and short-
circuit protetion for high capacity systems (mains and large
feeders).
• O-ring seals maximize pressure build-up during current-
limiting action and ensure filter retention.
• High-grade silica sand filler accelerates response of fuse to
short-circuits by having quenching effect on the fuse arc.
• 99.9% Pure silver links provide low watt loss with low
operating temperature on normal current levels and mini-
mizes total clearing I
2
t fault energy left-through.
Recommended Fuse Blocks — 601 to 1200 Amps
†
Catalog Numbers
51215
51235
Poles
1
3
† No Agency listings available.
No reducers available.
0813
BU-SB13XXX
Page 1 of 3
Data Sheet # 1008
Low-Peak™ Class L
KRP-C — 600Vac/300Vdc, 601-2000A, Time-Delay Fuses
Current-Limitation Curves
Current-Limiting Effects
Prosp.
Let-Through Current
S.C.C.
(Apparent RMS Symmetrical Vs. Fuse Rating)
—
601A
800A 1200A
1600A
2000A
5000
5000
5000
5000
5000
5000
10,000
8000
10,000 10,000 10,000
10,000
15,000
9000
12,000 15,000 15,000
15,000
20,000
10,000
13,000 17,000 20,000
20,000
25,000
11,000
14,000 19,000 22,000
25,000
30,000
11,000
14,000 20,000 24,000
27,000
35,000
12,000
15,000 21,000 25,000
29,000
40,000
13,000
16,000 22,000 26,000
30,000
50,000
14,000
17,000 23,000 28,000
32,000
60,000
15,000
18,000 25,000 30,000
34,000
70,000
15,000
19,000 26,000 32,000
36,000
80,000
16,000
20,000 27,000 33,000
38,000
90,000
17,000
21,000 29,000 34,000
39,000
100,000
17,000
22,000 30,000 36,000
41,000
150,000
20,000
25,000 34,000 41,000
47,000
200,000
22,000
27,000 37,000 45,000
51,000
250,000
24,000
29,000 40,000 49,000
55,000
300,000
25,000
31,000 43,000 52,000
59,000
The only controlled copy of this Data Sheet is the electronic read-only version located on the Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This bulletin is intended
to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right, without notice, to change design or construction
of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product
has been selected, it should be tested by the user in all possible applications.
0813
BU-SB13XXX
Page 3 of 3
Data Sheet # 1008
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