0713 BU-SB13725 Page 1 of 3 Data Sheet # 1013
LIMITRON™ Class L
KLU — 600Vac, 601-4000A, Time-Delay Fuses
Description: Advanced protection Class L time-delay, current-
limiting fuses. Time-delay – 5 seconds (minimum) at 500% of
rated current.
Catalog Symbol: KLU-(amp)
Ratings:
Volts — 600Vac
Amps — 601-4000A*
IR — 200kA Vac RMS Sym.
* Use KRP-CL for current ratings from 225 to 600 amps.
Agency Infortmation:
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)
KLU–601 KLU–1200 KLU–2500
KLU–650 KLU–1500 KLU–3000
KLU–700 KLU–1600 KLU–4000
KLU–800 KLU–1800
KLU–1000 KLU–2000
Carton Quantity and Weight
Amp Rating Carton Qty.
601-800 1
1000-1200 1
1500-1600 1
1800-2000 1
2500 1
3000 1
4000 1
Dimensions – in
Features:
• KLU Limitron general purpose copper link fuses
• Copper links result in a minimum 5 second time-delay at
500% ampere rating
• Current-limiting – provides component short-circuit
protection
• 200kA interrupting rating complies with NEC®Sections
110.9 and 230.65 in today’s large capacity systems
• Selective coordination (blackout prevention)
Recommended Fuse Blocks — 601 to 1200 Amps†
Catalog Numbers Poles
51215 1
51235 3
† No Agency listings available.
No reducers available.
1.75" 1.38"
0.81"
0.88"
1.75" 1.38"
0.88"
1.63"
0.75"
0.75"
0.75"
0.5"
2.75"
0.44"
2.38"
0.38"0.38"
2"
2.5"
2"
2.5" 3" 3.5"
3.5"
5"
4"
5"
4.75"
5.75"
10.75"
(± 0.09)
8.63"
(± 0.09)
6.75" 5.75"
All Slots and Holes
0.63" (± 0.03)
Terminals: Width (± 0.06), Thickness (± 0.03)
All other tolerances (± 0.02)
1000
to
1200A
601
to
800A
1500
to
1600A
1800
to
2000A
2500A 3000A
3500
to
4000A
6.75"
3.75"
0713 BU-SB13725 Page 2 of 3 Data Sheet # 1013
LIMITRON™ Class L
Time-Current Curves - Average Melt
TIME IN SECONDS
AMP RATING
800A
1200A
1600A
2000A
3000A
4000A
300
100
10
1
0.1
0.01
1,000
10,000
100,000
CURRENT IN AMPS
KLU — 600Vac, 601-4000A, Time-Delay Fuses
0713 BU-SB13725 Page 3 of 3 Data Sheet # 1013
LIMITRON™ Class L
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.
Current-Limitation Curves
A
B
4000
3000
2500
2000
1600
1200
800
AMP RATING
400,000
100,000
10,000
1,000
1,000
10,000
100,000
200,000
INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPERES
PROSPECTIVE SHORT-CIRCUIT CURRENT
SYMMETRICAL RMS AMPS
KLU — 600Vac, 601-4000A, Time-Delay Fuses
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.
