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 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, 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
Amp Rating
601-800
801-1200
1350-1600
1800-2000
KRP-C-900SP
KRP-C-1000SP
KRP-C-1100SP
KRP-C-1200SP
KRP-C-1350SP
KRP-C-1400SP
Carton Qty.
1
1
1
1
KRP-C-1500SP
KRP-C-1600SP
KRP-C-1800SP
KRP-C-1900SP
KRP-C-2000SP
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
considerable 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
Recommended Fuse Blocks — 601 to 1200 Amps
†
Catalog Numbers
51215
51235
Poles
1
3
† No Agency listings available.
No reducers available.
0713
BU-SB13690
Page 1 of 3
Data Sheet # 1008
Low-Peak™ Class L
KRP-C — 600Vac/300Vdc, 601-2000A, Time-Delay Fuses
Time-Current Curves - Average Melt
1600A
2000A
1200A
800A
300
AMP RATING
100
10
TIME IN SECONDS
1
0.1
100,000
CURRENT IN AMPS
0713
BU-SB13690
Page 2 of 3
200,000
Data Sheet # 1008
1,000
10,000
0.01
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 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-SB13690
Page 3 of 3
Data Sheet # 1008
