Limitron
®
Fast-Acting Fuses
600 Volt
Dimensional Data
5"
(± 0.31)
.81" (± 0.008)
1/10A to 30A
KTS-R
1-600A
5.5"
(± 0.31)
1.06" (± 0.008)
35A to 60A
7.88"
(±0.062)
1.000" (± 0.008)
70A to 100A
9.63"
(± 0.062)
1.500" (± 0.008)
110A to 200A
Catalog Symbol:
KTS-R
Fast-Acting
Current-Limiting
Ampere Rating:
1 to 600A
Voltage Rating:
600Vac (or less)*
Interrupting Rating:
200,000A RMS Sym.
Tube Material:
Glass Melamine
End Caps:
70/30 Brass
Operating Temp.:
–40°C to +85°C
Storage Temp.:
–55°C to +85°C
Agency Information:
CE, UL Listed, Std. 248-12, Class RK1, Guide JDDZ, File
E54273 CSA Certified, C22.2 No. 248.12, Class 1422-02,
File 53787
Catalog Numbers
KTS-R-1
KTS-R-2
KTS-R-3
KTS-R-4
KTS-R-5
KTS-R-6
KTS-R-8
KTS-R-10
KTS-R-12
KTS-R-15
KTS-R-20
KTS-R-25
KTS-R-30
KTS-R-35
KTS-R-40
KTS-R-45
KTS-R-50
KTS-R-60
KTS-R-70
KTS-R-75
KTS-R-80
KTS-R-90
KTS-R-100
KTS-R-110
KTS-R-125
KTS-R-150
KTS-R-175
KTS-R-200
KTS-R-225
KTS-R-250
KTS-R-300
KTS-R-350
KTS-R-400
KTS-R-450
KTS-R-500
KTS-R-600
11.63"
(±0.094)
2.000" (± 0.008)
225A to 400A
13.38"
(± 0.094)
2.500" (± 0.008)
450A to 600A
Carton Quantity and Weight (600Vac)
Amps
1–30
40–60
70–100
110–200
225–400
450–600
*Weight per carton.
Carton
Qty.
10
10
1
1
1
1
Weight*
Lbs.
1.45
2.63
0.5
1.4
2.75
4.25
Kg.
0.657
1.262
0.226
0.634
1.246
1.925
General Information:
• Single-element, fast-acting fuses with minimal time-delay.
• Provides a high degree of short-circuit current-limitation
(component protection).
• Particularly suited for circuits and loads with no heavy surge
currents of motors, transformers, solenoids, and welders.
• LIMITRON fuses are commonly used to protect circuit
breakers with lower interrupting ratings.
• If used in circuits with surge currents (motors, etc.) must be
sized to prevent unwanted opening and thus only provide
short-circuit protection.
• Incorporate Class R rejection feature. Can be inserted in non-
rejection type fuseholders. Thus, can physically and electri-
cally replace fast-acting Class H, K1, K5, RK5, and other
fast-acting fuses.
1002
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Data Sheet 1044
Current-Limitation Curves
INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS
400,000
B
Time-Current Characteristic Curves–Average Melt
100A
200A
400A
600A
AMPERE
RATING
30A
300
AMPERE
RATING
100
600
400
200
100
60
30
10
TIME IN SECONDS
1
.1
.01
10,000
1,000
Data Sheet 1044
100,000
10,000
A
100,000
RMS SYMMETRICAL CURRENTS IN AMPERES
A–B=ASYMMETRICAL AVAILABLE PEAK (2.3 x SYMM RMS AMPS)
Recommended fuseblocks for
Class R 600V fuses
See Data Sheet: 1111
200,000
1,000
10,000
1,000
60A
RMS SYMMETRICAL CURRENT IN AMPERES
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 informa-
tion 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.
© 2010 Cooper Bussmann
www.cooperbussmann.com
1002
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40
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