L
IMITRON
™ Class L
KTU — 600Vac, 601-6000A, Fast-Acting Fuses
Dimensions - in
0.88"
1.63"
1.38"
0.81"
1.75"
0.88"
1.38"
All other tolerances (± 0.02)
All Slots and Holes
0.63" (± 0.03)
1.75"
8.63"
(± 0.09)
601
1350
801
6.75"
to
10.75"
5.75"
to
to
(± 0.09)
800A
1200A 1600A
1800
to
2000A
2001
to
2500A
3000A
3500
to
4000A
4500
to
5000A
6000A
6.75"
3.75"
0.38"
0.38"
0.44"
0.5"
0.75"
0.75"
0.75"
1"
1"
2"
2.5"
2"
2.5"
2.38"
3"
2.75"
3.5"
3.5"
5"
4"
5"
4.75"
5.75"
5.25"
6.25"
5.75"
7.13"
Terminals: Width (± 0.06), Thickness (± 0.03)
Description:
Advanced protection Class L fast-acting,
current-limiting fuses.
Catalog Symbol:
KTU-(amp)
Ratings:
Volts — 600Vac
Amps — 601-6000A
IR — 200kA Vac RMS Sym.
Agency Information:
CE, UL Listed, Std. 248-10, Class L, Guide JDDZ, File E4273
CSA Certified, C22.2 No. 248.10, Class 1422-02, File 53787
RoHS Compliant
Catalog Numbers (amps)
KTU-601
KTU-650
KTU-700
KTU-750
KTU-800
KTU-850
KTU-900
KTU-1000
Amp Rating
601-800
850-1200
1350-1600
1800-2000
2001-2500
3000
3500-4000
4500-5000
6000
KTU-1200
KTU-1350
KTU-1400
KTU-1500
KTU-1600
KTU-4500
KTU-5000
KTU-6000
Carton Qty.
1
1
1
1
1
1
1
1
1
KTU-1800
KTU-2000
KTU-2001
KTU-2500
KTU-3000
KTU-3500
KTU-4000
Features:
• Fast-acting, short-circuit protection. Particularly suited for
protection of circuit breakers with lower interrupting ratings
and non-inductive loads such as lighting and heating
circuits
• 99.9% pure silver links provide low watt loss with low
operating temperature on normal current levels and
minimizes total clearing I
2
t fault energy let-through
• High grade silica-sand filler accelerates response of fuse to
short-circuits by having a quenching effect upon the fuse
arc
• O-ring seals maximize pressure build-up during current-
limiting actions and ensure filler retention
• Silver-plated micro-peened terminals provide high electrical
conductivity, minimize heat generation and keep fuses and
switches cooler
• Selective coordination (blackout prevention)
• Glass melamine tube
• Silver-plated end bells
Recommended Fuse Blocks — 601 to 1200 Amps**
Catalog Numbers
51215
51235
Poles
1
3
Carton Quantity and Weight
** No Agency listings available.
No reducers available.
0713
BU-SB13724
Page 1 of 3
Data Sheet # 1010
L
IMITRON
™ Class L
KTU — 600Vac, 601-6000A, Fast-Acting Fuses
Current-Limitation Curves
INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS
400,000
B
6000
5000
4000
3000
2500
2000
1600
1200
800
601
AMP RATING
10,000
PROSPECTIVE SHORT-CIRCUIT CURRENT
SYMMETRICAL RMS AMPS
BU-SB13724
100,000
10,000
A
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
Page 3 of 3
Data Sheet # 1010
100,000
200,000
1,000
1,000
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