Low-Peak™ Class L
KRP-C — 600Vac/300Vdc, 2001-6000A, Time-Delay Fuses
Dimensions - in
0.88"
1.75"
1.38"
0.81"
1.63"
1.75"
0.88"
1.38"
2001A
to
2500A
3000A
3500A
to
4000A
4500A
to
5000A
6000A
6.75"
3.75" 10.75"
(± 0.09)
Description:
Ultimate protection Class L dual element,
current-limiting, time-delay fuses. Time-delay – 4 seconds
(minimum) at 500% of rated current.
Catalog Symbol:
KRP-C-(amp)SP
Ratings:
Volts — 600Vac
Amps — 2001-6000A
IR — 300kA Vac RMS Sym.
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-2001SP
KRP-C-2400SP
KRP-C-2500SP
KRP-C-3000SP
Amp Rating
2001-2500
3000
3500-4000
4500-5000
6000
KRP-C-3500SP
KRP-C-3800SP
KRP-C-4000SP
KRP-C-4500SP
Carton Qty.
1
1
1
1
1
KRP-C-5000SP
KRP-C-6000SP
0.75"
0.75"
0.75"
1"
1"
3.5"
5"
5.03" Max.
4"
4.75"
5.25"
5"
5.75"
6.25"
5.03" Max.
5.79" Max.
7.17" Max.
Terminals: Width (± 0.06), Thickness (± 0.03)
5.75"
7.13"
7.17" Max.
Carton Quantity and weight
Features:
• Industry’s only UL Listed and CSA Certified fuse with a
300kA Vac interrupting rating that exceeds requirements for
virtually all applications
• Fast short-circuit protection provides optimal arc flash
protection to reduce hazard to personnel
• Easy selective coordination with all Low-Peak fuses using
simple 2:1 ampacity ratio
• All purpose silver-linked fuse for both overload and short-
circuit protection for high capacity systems (mains and large
feeders)
• Time-delay for close sizing to load
• Current-limiting action of the fuse generally affords consid-
erable reduction in bus bracing
• 300kA Interrupting rating complies with NEC
®
Sections
110.9 and 230.65 for today’s large capacity systems
• O-ring seals maximize pressure build-up during current-
limiting action and ensure filler retention
• High grade silica-sand filler; accelerates response of fuse to
short-circuits by having quenching effect upon the fuse arc
• 99.9% pure silver links for high conductivity with low watt
loss and low operating temperature at normal current levels
minimizes total clearing I
2
t fault energy let-through
• Glass melamine tube.
• Silver-plated end bells.
0713
BU-SB13691
Page 1 of 3
Data Sheet # 1009
Low-Peak™ Class L
KRP-C — 600Vac/300Vdc, 2001-6000A, Time-Delay Fuses
Current-Limitation Curves
Current-Limiting Effects
Prosp.
Let-Through Current
S.C.C.
(Apparent RMS Symmetrical Vs. Fuse Rating)
—
2500A
3000A 4000A
5000A
6000A
5000
5000
5000
5000
5000
5000
10,000
10,000 10,000 10,000 10,000 10,000
15,000
15,000 15,000 15,000 15,000 15,000
20,000
20,000 20,000 20,000 20,000 20,000
25,000
25,000 25,000 25,000 25,000 25,000
30,000
30,000 30,000 30,000 30,000 30,000
35,000
35,000 35,000 35,000 35,000 35,000
40,000
35,000 40,000 40,000 40,000 40,000
50,000
37,000 50,000 50,000 50,000 50,000
60,000
40,000 49,000 60,000 60,000 60,000
70,000
42,000 52,000 62,000 70,000 70,000
80,000
44,000 54,000 65,000 76,000 80,000
90,000
45,000 56,000 67,000 79,000 90,000
100,000
47,000 58,000 70,000 81,000 100,000
150,000
54,000 67,000 80,000 93,000 104,000
200,000
59,000 73,000 87,000 102,000 114,000
250,000
64,000 79,000 94,000 110,000 123,000
300,000
68,000 84,000 100,000 117,000 130,000
The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper 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. Cooper Bussmann reserves the right, without notice, to change
design or construction of any products and to discontinue or limit distribution of any products. Cooper 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.
0713
BU-SB13691
Page 3 of 3
Data Sheet # 1009
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