Bussmann
®
T-Tron
®
Very Fast Acting Fuses
Class T
300 Volts, 1-1200 Amps
Dimensional Data
.88"
(± 0.02)
.41" Dia.
(± 0.02)
1A to 30A
.88"
(± 0.02)
.56" Dia.
(± 0.02)
35A to 60A
2.16"
(± 0.02)
.284"
(Typ. 2)
1.56"
.84"
.75"
(± 0.02)
70A to100A
2.44"
(± 0.02)
1.69"
.84"
.88"
(± 0.02)
110A to 200A
2.75"
(± 0.04)
1.84"
.86"
1"
(± 0.04)
225A to 400A
801A to 1200A
450A to 600A
3.38"
(± 0.04)
2.22"
.92"
3.06"
(± 0.04)
2.03"
.88"
JJN
1.25"
(± 0.04)
.484"
(Typ. 2)
1.75"
(± 0.04)
.562"
(Typ. 2)
Catalog Symbol:
JJN
Current Limiting
Very Fast Acting
Ampere Rating:
1 to1200A
Voltage Rating:
300Vac (or less)*
Interrupting Rating:
200,000A RMS Sym.
Agency Information:
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
JJN-1
JJN-2
JJN-3
JJN-6
JJN-10
JJN-15
JJN-20
JJN-25
JJN-30
JJN-35
JJN-40
JJN-45
JJN-50
JJN-60
JJN-70
JJN-80
JJN-90
JJN-100
JJN-110
JJN-125
JJN-150
JJN-175
JJN-200
JJN-225
JJN-250
JJN-300
JJN-350
JJN-400
JJN-450
JJN-500
JJN-600
JJN-700
JJN-800
JJN-1000
JJN-1200
—
.344"
(Typ. 2)
601A to 800A
4"
(± 0.04)
2.53"
1.08"
.406"
(Typ. 2)
2"
(± 0.04)
.609"
(Typ. 2)
• 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 T-Tron 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 of response for semiconductor protection.
Carton Quantity and Weight–JJN-T-TRON (300Vac)
Catalog
Number
1–30
35–60
70–100
110–200
225–400
450–600
700–800
Carton
Qty.
10
10
5
1
1
1
1
Weight**
Lbs.
0.12
0.23
0.36
0.14
0.25
0.44
0.80
Kg.
0.054
0.104
0.163
0.063
0.113
0.200
0.363
Recommended fuseblocks for
Class T 300V fuses
See Data Sheet: 1115
1000–1200
1
1.45
0.658
*15-600A rated 160Vdc, 601-1200A rated 170Vdc and 10 KAIC.
**Weight per carton.
CE logo denotes compliance with European Union Low Voltage Directive
(50-1000Vac, 75-1500Vdc). Refer to Data Sheet: 8002 or contact
Bussmann Application Engineering at 636-527-1270 for more information.
Form No. JJN
Page 1 of 2
Data Sheet: 1025
3-17-04
SB04092
Bussmann
®
T-Tron
®
Very Fast Acting Fuses
Class T
300 Volts, 1-1200 Amps
Current Limitation Curves
INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS
400,000
B
30A
AMPERE
RATING
300
15A
60A
JJN
Time-Current Characteristic Curves–Average Melt
1000A
1200A
100A
200A
400A
600A
800A
AMPERE
RATING
100,000
1200
800
600
400
200
100
60
30
15
100
10,000
10
1,000
TIME IN SECONDS
10,000
100
100,000
200,000
1,000
A
200
1
RMS SYMMETRICAL CURRENTS IN AMPERES
A-B = ASYMMETRICAL AVAILABLE PEAK (2.3 x SYMM RMS AMPS)
Custom Designs
• Printed circuit board variations available.
1.743" (± .020)
1.395" (± .015)
.875" (± .015)
.1
.190" MIN.
C
L
.500"
20
A
RMS SYMMETRICAL CURRENT IN AMPERES
Fuse
A
B
JJN-(1-30)L
0.406 .125
JJN-(35-60)L
0.563 .125
JJN-(35-60)L-01 0.563 .165
The JJN-XXL products are UL Component Recognized under File E-56412
B
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 con-
tained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
3-17-04
SB04092
Form No. JJN
Page 2 of 2
Data Sheet: 1025
10,000
100
1,000
.01
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