L
IMITRON
™ 600V Class T
JJS — 600Vac, 1-800A, Fast-Acting Fuses
Dimensions – in
1.5"
( 0.04)
Dia. 0.56"
( 0.04)
3.63"
( 0.04)
2.72"
1.73"
1"
( 0.04)
225 to 400A
1 to 30A
Dia. 0.81"
( 0.04)
2.95"
( 0.04)
35 to 60A
1.25"
( 0.04)
3.98"
( 0.04)
2.95"
1.78"
0.406"
(Typ. 2)
Description:
Advanced protection Class T current-limiting,
fast-acting fuses.
Catalog Symbol:
JJS-(amp)
Ratings:
Volts — 600Vac
Amps — 1-800A
IR — 200kA Vac RMS Sym.
Agency Information:
CE, UL Listed, Std. 248-15, Class T, Guide JDDZ, File E4273
CSA Certified, C22.2 No. 248.15, Class 1422-02, File 53787
Catalog Numbers (amps)
JJS-1
JJS-2
JJS-3
JJS-6
JJS-10
JJS-15
JJS-20
JJS-25
JJS-30
JJS-35
JJS-40
Amp Rating
1–30
35–60
70–100
110–200
225–400
450–600
800
JJS-45
JJS-50
JJS-60
JJS-70
JJS-80
JJS-90
JJS-100
JJS-110
JJS-125
JJS-150
JJS-175
Carton Qty.
10
10
5
1
1
1
1
JJS-200
JJS-225
JJS-250
JJS-300
JJS-350
JJS-400
JJS-450
JJS-500
JJS-600
JJS-800
0.75"
( 0.04)
0.281"
(Typ. 2)
2.36"
1.64"
450 to 600A
70 to 100A
0.88"
( 0.04)
0.344"
(Typ. 2)
3.25"
( 0.04)
2.5"
1.66"
1
4.33"
( 0.04)
3.17"
1.88"
1.75"
( 0.04)
0.484"
(Typ. 2)
10 to 200A
601 to 800A
0.563"
(Typ. 2)
Features:
• Small, space-saving fuses provide a high degree of current-
limitation on short-circuits for excellent component
protection
• Commonly applied in electric heat circuits, load center,
disconnect switches, and meters
• The small size of the JJS Class T fuses permits installation
in panelboards and control centers for system upgrading
when existing circuit breakers cannot safely interrupt larger
available short-circuit currents
• High speed response for semiconductor protection
• Available for printed circuit board applications
Recommended Fuse Blocks
Amps Rating
1-30
35-60
70-100
110-200
2225-400
450-600
1-Pole
T60030-1_
T60060-1_
T60100-1_
T60200-1_
T60400-1_
T60600-1_
2-Pole
T60030-2_
T60060-2_
T60100-2_
3-Pole
T60030-3_
T60060-3_
T60100-3_
1B0089
Carton Quantity and Weight
For additional information on the 600 volt Class T fuse blocks,
see Data Sheet # 1116.
0713
BU-SB13737
Page 1 of 3
Data Sheet # 1029
L
IMITRON
™ 600V Class T
JJS — 600Vac, 1-800A, Fast-Acting Fuses
Current-Limitation Curves
B
AMP RATING
Custom Designs
Printed circuit board versions available up to 60 amps.
Consult factory for details.
UL Component Recognized, Guide JFHR2, File E56412.
Dimensions - in
47.88
(1.885)
5.08 MIN.
(0.200)
19.05 ± 0.76
(0.750 ± 0.03)
20.19 ± 0.76
(0.795 ± .03)
INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS
400,000
300,000
200,000
100,000
80,000
60,000
40,000
30,000
20,000
10,000
8,000
6,000
4,000
3,000
2,000
1,000
800
600
400
300
200
800
600
400
200
100
60
30
15
JJS-(1-30)V
1.562"
8.23
(0.324)
12.70
(0.500)
0.150"
(+ 0.02 – 0.0)
0.806"
(± 0.02)
1.432" (± 0.03)
A
100
200
300
400
600
800
1,000
6,000
8,000
10,000
2,000
20,000
3,000
4,000
30,000
40,000
60,000
80,000
100,000
200,000
0.806"
PROSPECTIVE SHORT-CIRCUIT CURRENT–SYMMETRICAL RMS AMPS
JJS-(35-60)V
Current-Limiting Effects
Prosp.
Let-Through Current
S.C.C.
(Apparent RMS Symmetrical Vs. Fuse Rating)
15A 30A
60A 100A 200A 400A
600A
500 1000 1000 1000 1000 1000 1000
1000
1000 1000 1000 1000 1000 1000 1000
1000
5000 1000 1000 1000 2000 3000 4000
5000
10,000 1000 1000 1000 2000 3000 6000
8000
15,000 1000 1000 2000 3000 4000 7000 10,000
20,000 1000 1000 2000 3000 4000 7000 10,000
25,000 1000 1000 2000 3000 5000 7000 11,000
30,000 1000 1000 2000 3000 5000 8000 12,000
35,000 1000 1000 2000 3000 5000 9000 13,000
40,000 1000 2000 2000 4000 5000 9000 13,000
50,000 1000 2000 2000 4000 6000 10000 14,000
60,000 1000 2000 3000 4000 6000 10000 16,000
70,000 1000 2000 3000 4000 7000 11000 17,000
80,000 1000 2000 3000 4000 7000 11000 17,000
90,000 1000 2000 3000 4000 7000 12000 18,000
100,000 2000 2000 3000 5000 7000 12,000 19,000
150,000 2000 3000 4000 6000 8000 14,000 22,000
200,000 2000 3000 4000 6000 9000 16,000 24,000
800A
1000
1000
5000
9000
11,000
12,000
13,000
14,000
15,000
15,000
17,000
18,000
19,000
20,000
21,000
22,000
25,000
28,000
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
BU-SB13737
Page 3 of 3
Data Sheet # 1029
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