applications that have specific current limitation
requirements.
•
•
•
Catalog symbol:
•
Recommended blocks and holders
Fuse
amps 1-pole
2-pole
3-pole
Modular open blocks
Up to
JM60030-1_
JM60030-2_
JM60030-3_
30
35-60 JM60060-1_
JM60060-2_
JM60060-3_
Modular power distribution fuse blocks*
0-30
JM60030-1MW_ JM60030-2MW_ JM60030-3MW_
35-60 JM60060-1MW_ JM60060-2MW_ JM60060-3MW_
“Pyramid” block
Up to
—
—
JP60030-3_
30
CH DIN-Rail modular fuse holders
Up to
CH30J1_
CH30J2_
CH30J3_
30
35-60 CH60J1_
CH60J2_
CH60J3_
Safety J™ modular panel/DIN-Rail mount holders
Up to
JT60030_
—
—
30
35-60 JT60060_
—
—
* Combines fuse block and power distribution block into one
assembly. Modular construction allows ganging blocks for
the desired number of poles.
JKS-_
Description:
The Bussmann™ series advanced protection
Limitron™ Class J fast-acting, curent-limiting
fuses are available in ratings up to 60 amps. For
JKS fuses above 60 amps, see data sheet no.
1027 The JKS is also available in a special, UL
®
.
Recognized 700 Vac version in select ratings. For
details on the 700 Vac versions, see page 3 of this
data sheet.
Ratings
•
•
•
Volts 600 Vac
Amps up to 60 A
IR 200 kA RMS Sym.
UL Listed, Std. 248-8, Class J, Guide JDDZ,
File E4273
CSA Certified, C22.2 No. 248.8, Class 1422-02,
File 53787
CE
JKS-30
JKS-35
JKS-40
JKS-45
JKS-50
JKS-60
Agency information
•
•
For more information on the recommended blocks
and holders, see the following data sheets.
Product
Modular blocks
Modular power distribution blocks
Pyramid block
CH holders
Safety J holders
Data sheet no.
10488
10192
1108
2144
1152
•
Catalog no. (amps)
JKS-1
JKS-8
JKS-2
JKS-10
JKS-3
JKS-12
JKS-4
JKS-15
JKS-5
JKS-20
JKS-6
JKS-25
Carton quantity 10
Technical Data 1026
Effective July 2017
JKS fast-acting Class J fuses, up to 60 A
Dimensions — in
Time-currect curves — average melt
These curves apply to both the 600 V Class J and the 700 V
versions.
2.25
0.5
0.81
Up to 30 A
2.38
AMP RATING
0.63
1.06
35 to 60 A
Class J fuse reducers
Equipment fuse clips Desired fuse (case size)
60 A
30 A
30 A
100 A
60 A
200 A
60 A
† Not for bolt-in applications.
Catalog no. (pairs)
J-63
J-13
J-16
J-26
†
TIME IN SECONDS
CURRENT IN AMPS
2
Eaton.com/bussmannseries
JKS fast-acting Class J fuses, up to 60 A
Technical Data 1026
Effective July 2017
Current-limitation curves — applies only to 600 Vac fuses
INSTANTANEOUS PEAK-LET-THROUGH CURRENT IN AMPS
400,000
B
AMP RATING
Current-limiting effects — 600 Vac fuses only
Prosp.
S.C.C.
—
5000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
150,000
200,000
Let-through current
(apparent RMS Sym. vs. fuse rating)
30A
60A
1000
1000
1000
2000
1000
2000
1000
2000
2000
3000
2000
3000
2000
3000
2000
3000
2000
3000
2000
3000
2000
3000
2000
3000
2000
4000
2000
4000
2000
5000
3000
5000
100,000
10,000
60
30
A
10,000
100,000
RMS SYMMETRICAL CURRENT IN AMPS
A-B = ASYMMETRICAL AVAILABLE PEAK (2.3 X SYM RMS AMPS)
200,000
1000
1000
Eaton.com/bussmannseries
3
Technical Data 1026
Effective July 2017
JKS fast-acting Class J fuses, up to 60 A
700 Vac JKS-700 fast-acting fuses
Features
•
Current limitation for non-inductive circuits provides current-limiting
response to maximum ground fault and short-circuit conditions
200 kA interrupting rating provides protection at all circuit locations
Economical circuit protection for high-fault current circuits
•
•
Typical applications
•
Power panelboards up to 700 Vac
Machinery disconnects up to 700 Vac
Catalog symbol:
•
•
JKS-_-700
Catalog no. (amps)
JKS-25-700
JKS-30-700
JKS-35-700
JKS-60-700
Description:
The JKS-700 is a fast-acting, current-limiting fuse that is UL
Recognized and has CSA Component Acceptance for applications up
to 700 Vac. The JKS-700 is available in ratings up to 60 amps with
the same dimensions as a standard Class J fuses; but its voltage
rating places it outside the standard Class J fuse class. The time-
current curves shown for the 600 Vac fuses apply to the 700 Vac
versions, but the current let-through curves do not.
Bussmann recommends the JM70100 modular fuse block and the
JM70100-MW power distribution fuse block for the 30 amp case size
JKS-700 fuses.
Ratings
•
•
•
Volts 700 Vac (or less)
Amps 25-60 A
IR
•
•
Minimum 6I
n
200 kA RMS Sym.
Operating class aR
Agency information
•
•
UL Recognized, 248-13 Semiconductor Fuses, File E56412
CSA Component Acceptance, C22.2 No 248.13 Semiconductor
Fuses, Class 1422-30
The only controlled copy of this data sheet is the electronic read-only version located on the Eaton 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. Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit
distribution of any products. Eaton 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.
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