0615 BU-SB13737 Page 1 of 3 Data Sheet # 1029
LIMITRON™ 600V Class T
JJS — 600Vac, 1-800A, Fast-Acting Fuses
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-45 JJS-200
JJS-2 JJS-50 JJS-225
JJS-3 JJS-60 JJS-250
JJS-6 JJS-70 JJS-300
JJS-10 JJS-80 JJS-350
JJS-15 JJS-90 JJS-400
JJS-20 JJS-100 JJS-450
JJS-25 JJS-110 JJS-500
JJS-30 JJS-125 JJS-600
JJS-35 JJS-150 JJS-800
JJS-40 JJS-175
Carton Quantity:
Amp Rating Carton Qty.
1–60 10
70–100 5
110–800 1
Dimensions – in
Features:
• Provides 10X better current limitation to help prevent
equipment damage caused by short-circuit events.
• 200kA Interrupting rating complies with NEC®Section 110.9
for today's large capacity systems.
• Fast-acting fuse helps prevent equipment damage caused
by short-circuit events.
• Small, space-saving fuses provide a high degree of current
limitation on short-circuits for excellent component
protection.
• Ideal for critical industrial or commercial applications that
have specific current limitation requirements.
Recommended Fuse Blocks
Amps Rating 1-Pole 2-Pole 3-Pole
1-30 T60030-1_ T60030-2_ T60030-3_
35-60 T60060-1_ T60060-2_ T60060-3_
70-100 T60100-1_ T60100-2_ T60100-3_
110-200 T60200-1_ — 1B0089
2225-400 T60400-1_ ——
450-600 T60600-1_ ——
For additional information on the 600 volt Class T fuse blocks,
see Data Sheet # 1116.
3.98"
2.95"
1.78"
1.25"
450 to 600A
3.63"
2.72"
1.73"
1"
225 to 400A
601 to 800A
4.33"
3.17"
1.88"
1.75"
0.88"
3.25"
2.5"
1.66"
100 to 200A
Dia. 0.56"
1 to 30A
1.5"
Dia. 0.81"
0.75"
2.95"
2.36"
1.64"
70 to 100A
Ø 0.344"
Ø 0.563"
Ø 0.484"
Ø 0.406"
Ø 0.281"
35 to 60A
1.56"
1.00"
0615 BU-SB13737 Page 2 of 3 Data Sheet # 1029
LIMITRON™ 600V Class T
Time-Current Curves - Average Melt
1A
3A
5A
10A
30A
15A
60A
200A
400A
500A
100A
600A
AMP RATING
10,000
1000
100
10
1
300
100
10
1
0.1
0.01
CURRENT IN AMPS
TIME IN SECONDS
JJS — 600Vac, 1-800A, Fast-Acting Fuses
0615 BU-SB13737 Page 3 of 3 Data Sheet # 1029
LIMITRON™ 600V Class T
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 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. 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.
Custom Designs
Printed circuit board versions available up to 60 amps.
Consult factory for details.
UL Component Recognized, Guide JFHR2, File E56412.
Dimensions - in
Current-Limitation Curves
47.88
(1.885)
19.05 ± 0.76
(0.750 ± 0.03)
20.19 ± 0.76
(0.795 ± .03)
12.70
(0.500)
8.23
(0.324)
5.08
(0.200)
MIN.
1.562"
1.432" (± 0.03)
0.806"
0.150"
(+ 0.02 – 0.0)
0.806"
(± 0.02)
JJS — 600Vac, 1-800A, Fast-Acting Fuses
800
100,000
80,000
60,000
40,000
30,000
20,000
10,000
8000
6000
4000
3000
2000
1000
600
400
300
200
100
200
300
400
600
800
1000
2000
3000
4000
6000
8000
10,000
20,000
30,000
40,000
60,000
80,000
100,000
200,000
200,000
400,000
300,000
600
400
200
100
60
30
AMP RATING
800
15
B
A
RMS SYMMETRICAL CURRENT IN AMPS
A-B = ASYMMETRICAL AVAILABLE PEAK (2.3 X SYM RMS AMPS)
INSTANTANEOUS PEAK-LET-THROUGH CURRENT IN AMPS
JJS-(1-30)V
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 800A
500 1000 1000 1000 1000 1000 1000 1000 1000
1000 1000 1000 1000 1000 1000 1000 1000 1000
5000 1000 1000 1000 2000 3000 4000 5000 5000
10,000 1000 1000 1000 2000 3000 6000 8000 9000
15,000 1000 1000 2000 3000 4000 7000 10,000 11,000
20,000 1000 1000 2000 3000 4000 7000 10,000 12,000
25,000 1000 1000 2000 3000 5000 7000 11,000 13,000
30,000 1000 1000 2000 3000 5000 8000 12,000 14,000
35,000 1000 1000 2000 3000 5000 9000 13,000 15,000
40,000 1000 2000 2000 4000 5000 9000 13,000 15,000
50,000 1000 2000 2000 4000 6000 10000 14,000 17,000
60,000 1000 2000 3000 4000 6000 10000 16,000 18,000
70,000 1000 2000 3000 4000 7000 11000 17,000 19,000
80,000 1000 2000 3000 4000 7000 11000 17,000 20,000
90,000 1000 2000 3000 4000 7000 12000 18,000 21,000
100,000 2000 2000 3000 5000 7000 12,000 19,000 22,000
150,000 2000 3000 4000 6000 8000 14,000 22,000 25,000
200,000 2000 3000 4000 6000 9000 16,000 24,000 28,000
