Limitron®Quick Acting Fuses JKS
Class J 70-600A
600 Volt
Form No. JKS 70-600
Page 1 of 2
Data Sheet: 1027
Bussmann®
10-2-02 SB02295
6.0"
8.0"
3.75"
.69" 2.13" .38"
.53"
2"
450A to
600A 2.5"
7.13"
5.25"
3.38"
.53"
1.63"
1.88"
.41"
*2"
.25"
225A to
400A
5.75"
4.38"
3.0"
.38" 1.38"
1.13"
.28"
.19"
1.5"
110A to
200A
4.63"
3.63"
2.63"
65A to 100A .28"
.75" 1.13"
.13"
1"
.38"
Catalog Symbol: JKS
Quick-Acting
70 To 600A
600Vac (or less) *
Current-Limiting
Interrupting Rating: 200,000A RMS Sym.
UL Listed Class J (Guide # JDDZ, File # E4273)
CSA HRCI-J (Class 1422-02, File # 53787)
*Contact Bussmann for dc ratings.
Catalog Numbers
JKS-70 JKS-150 JKS-350
JKS-80 JKS-175 JKS-400
JKS-90 JKS-200 JKS-450
JKS-100 JKS-225 JKS-500
JKS-110 JKS-250 JKS-600 —
Carton Quantity and Weight–JKS LIMITRON (600Vac)*
Catalog Carton Weight**
Number Qty Lbs. Kg.
70–100 5 0.28 0.127
110–200 1 0.86 0.390
225–400 1 1.78 0.807
450–600 1 3.07 1.392
**Weight per carton.
• Single element, current limiting fuses provide superior short-cir-
cuit protection.
• Protects low interrupting capacity circuit breakers. Limits the
short-circuit current to meet the interrupting capacity require-
ments of existing equipment.
• On older systems av ailab le short circuit current ma y exceed the
interrupting capacity of the circuit breakers, fuses can be
installed in series with existing equipment.
• Well suited f or lighting and heating circuits and other non-induc-
tive loads.
• Provides component shor t-circuit protection in compliance with
NEC 110-10, where protection devices shall clear a fault with-
out “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.
• Fuses can easily be selectively coordinated.
Dimensional Data
Recommended fuseblocks for
Class J 600V fuses
See Data Sheet: 1114
Form No. JKS 70-600
Page 2 of 2
Data Sheet: 1027
Bussmann®
The only controlled copy of this Data Sheet is the electronic read-only version located on the Bussmann Network Drive. All other copies of this Data Sheet 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. Bussmann reserves the right, without notice, to change design or construction of any products
and to discontinue or limit distribution of any products. 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.
Limitron®Quick Acting Fuses JKS
Class J 70-600A
600 Volt
600
400
200
AMPERE
RATING
100
INSTANTANEOUS PEAK LET-THRU CURRENT IN AMPS
1,000
10,000
100,000
200,000
400,000
100,000
10,000
1,000
RMS SYMMETRICAL CURRENTS IN AMPERES
A–B=ASYMMETRICAL AVAILABLE PEAK (2.3 X SYMM RMS AMPS)
B
A
100A
200A
400A
AMPERE
RATING
600A
300
100
10
1
.1
.01
RMS SYMMETRICAL CURRENT IN AMPERES
TIME IN SECONDS
40
100
1,000
10,000
Current Limitation Curves Time-Current Characteristic Curves–Average Melt
10-2-02 SB02295
