Bussmann® T-Tron® Very Fast Acting Fuses JJN Class T 300 Volts, 1-1200 Amps Dimensional Data .88" (± 0.02) 3.06" (± 0.04) .41" Dia. (± 0.02) 1A to 30A .88" (± 0.02) 2.03" .88" 1.25" (± 0.04) .56" Dia. (± 0.02) 450A to 600A 35A to 60A .284" (Typ. 2) 2.16" (± 0.02) 3.38" (± 0.04) 1.56" .84" 2.22" .92" .75" (± 0.02) 1.75" (± 0.04) 70A to100A 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-50 JJN-250 JJN-2 JJN-60 JJN-300 JJN-3 JJN-70 JJN-350 JJN-6 JJN-80 JJN-400 JJN-10 JJN-90 JJN-450 JJN-15 JJN-100 JJN-500 JJN-20 JJN-110 JJN-600 JJN-25 JJN-125 JJN-700 JJN-30 JJN-150 JJN-800 JJN-35 JJN-175 JJN-1000 JJN-40 JJN-200 JJN-1200 JJN-45 JJN-225 — Carton Quantity and Weight–JJN-T-TRON (300Vac) Catalog Number Weight** Carton Qty. Lbs. Kg. 1–30 10 0.12 0.054 35–60 10 0.23 0.104 70–100 5 0.36 0.163 110–200 1 0.14 0.063 225–400 1 0.25 0.113 450–600 1 0.44 0.200 700–800 1 0.80 0.363 .344" (Typ. 2) 2.44" (± 0.02) 1.69" .84" 601A to 800A .88" (± 0.02) 110A to 200A .406" (Typ. 2) .484" (Typ. 2) 4" (± 0.04) 2.53" 1.08" 2.75" (± 0.04) 1.84" .86" 2" (± 0.04) 1" (± 0.04) 225A to 400A .562" (Typ. 2) 801A to 1200A .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. 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. 3-17-04 SB04092 Form No. JJN Page 1 of 2 Data Sheet: 1025 Bussmann® T-Tron® Very Fast Acting Fuses JJN Class T 300 Volts, 1-1200 Amps 100,000 1200 800 600 1000A 1200A 800A 600A 400A 200A 60A 30A 300 15A AMPERE RATING 400,000 100A Time-Current Characteristic Curves–Average Melt B AMPERE RATING 100 400 200 100 60 30 15 10,000 10 RMS SYMMETRICAL CURRENTS IN AMPERES A-B = ASYMMETRICAL AVAILABLE PEAK (2.3 x SYMM RMS AMPS) TIME IN SECONDS 200,000 100,000 1,000 A 200 10,000 1,000 100 INSTANTANEOUS PEAK LET-THROUGH CURRENT IN AMPS Current Limitation Curves 1 Custom Designs • Printed circuit board variations available. 1.743" (± .020) .1 1.395" (± .015) .875" (± .015) CL A 1,000 20 .01 10,000 .500" 100 .190" MIN. 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 contained 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