Limitron™ Class J
JKS — 600Vac, 70-600A, Fast-Acting Fuses
Dimensions - in
4.63"
3.63"
7.13"
5.25"
3.38"
1.13"
0.75"
2.63"
0.41"
1.63"
1.88"
*2"
0.25"
1"
0.28"
0.38"
0.13"
0.53"
225 to 400A
65 to 100A
8.0"
6.0"
3.75"
5.75"
4.38"
3.0"
0.53"
2"
1.13"
0.28"
2.5"
0.38"
1.5"
1.38"
0.19"
0.38"
2.13"
0.69"
450 to 600A
100 to 200A
Description: Advanced protection Class J current-limiting,
Features:
• Single element, current limiting fuses provide superior short-
circuit protection
• Protects low interrupting capacity circuit breakers. Limits
the short-circuit current to meet the interrupting capacity
requirements of existing equipment
fast-acting fuses.
Catalog Symbol: JKS-(amp)
Ratings:
Volts — 600Vac
• On older systems available short-circuit current may exceed
the interrupting capacity of the circuit breakers, fuses can
be installed in series with existing equipment
• Well suited for lighting and heating circuits and other non-
inductive loads
• Provides component short-circuit protection in compliance
with NEC® 110.10, where protection devices shall clear a
fault without “extensive damage” to the circuit components
• High interrupting rating helps meet the requirements of
future system expansion and the increases in available utility
short-circuit current
Amps — 70-600
IR — 200kA Vac RMS Sym.
Agnecy Information:
CE, UL Listed Class J (Guide # JDDZ, File # E4273)
CSA HRCI-J (Class 1422-02, File # 53787)
Catalog Numbers (amps)
JKS-70
JKS-80
JKS-90
JKS-100
JKS-110
JKS-150
JKS-175
JKS-200
JKS-225
JKS-250
JKS-350
JKS-400
JKS-450
JKS-500
JKS-600
• Fuses can easily be selectively coordinated
Recommended Fuse Blocks and Holders
Fuse Amps
1-Pole
2-Pole
3-Pole
Carton Quantity and Weight
Open Blocks
J60030-1
J60060-1
Amp Rating
70–100
Carton Qty.
0-30
35-60
J60030-2
J60060-2
J60030-3
J60060-3
5
1
1
1
110–200
225–400
450–600
“Pyramid” Blocks
JP60030-1
JP60060-1
0-30
35-60
JP60030-2
JP60060-2
JP60030-3
JP60060-3
CH Series Holders
0-30
35-60
CH30J1
CH60J1
CH30J2
CH60J2
CH30J3
CH60J3
Safety J™ Holders
0-30
35-60
JT60030
JT60060
—
—
—
—
For additional information on the Class J fuse blocks and
holders, see data sheets # 1114 (open blocks), #1108
(pyramid blocks), # 2144 (CH Series) and # 1152 (Safety J).
Fuse Reducers For Class R Fuses
Equipment
Fuse Clips
60A
Desired Fuse
(Case) Size
30A
Catalog Numbers
(Pairs) 600V
J-63
30A
60A
60A
J-13
J-16
J-26†
100A
200A
†
Not for bolt-in applications.
0713
BU-SB13736
Page 1 of 3
Data Sheet # 1027