Axial Lead & Cartridge Fuses 520mm > Time-Lag > 977 Series PS RoHS Pb 977 Series, 520mm, Time-Lag Fuse E Description 450Vdc/500Vac rated, 520mm, Time-Lag, surge withstand, ceramic body, cartridge fuse. Features Designed to International Available in Cartridge and (IEC) Standards for use Axial lead Form globally Rohs compliant and Follow the IEC 60127-2, Pb-free Sheet 5 specification for Time-Lag Fuses Agency Approvals Applications Agency Agency File Number Ampere Range Inverter in LCD backlight unit, DC side of air-conditioners, Cartridge: 3-phase power supplies, Higher Energy and Power Efficient NBK040609-JP1021A 2A 5A applications. NBK040609-JP1021C 6.3A 12A NBK100408-JP1021A 16A PS E Leaded: Electrical Characteristics for Series NBK040609-JP1021B 2A 5A NBK040609-JP1021D 6.3A 12A % of Ampere Ampere Rating Opening Time NBK100408-JP1021B 16A Rating 0.5A 8A 60 minutes, Minimum 1410854 0.5A-8A 2A 3.15A 60 minutes, Minimum 150% N/A 0.5A-8A 4A 6.3A 60 minutes, Minimum 8A 16A 30 minutes, Minimum 0.5A 8A 30 minutes, Maximum 2A 3.15A 30 minutes, Maximum 210% Additional Information 4A 6.3A 30 minutes, Maximum 8A 16A 30 minutes, Maximum 0.5A 8A 250 ms. Min. 80 secs. Max. 2A 3.15A 750 ms. Min. 80 secs. Max. Datasheet Resources Samples 275% 4A 6.3A 750 ms. Min. 80 secs. Max. 8A 16A 750 ms. Min. 80 secs. Max. 0.5A 8A 50 ms, Min. 5 secs. Max. 2A 3.15A 95 ms, Min. 5 secs. Max. 400% 4A 6.3A 150 ms, Min. 5 secs. Max. 8A 16A 150 ms, Min. 5 secs. Max. 0.5A 8A 5 ms, Min150 ms, Max. 2A 3.15A 10 ms, Min150 ms, Max. 1000% 4A 6.3A 10 ms, Min150 ms, Max. 8A 16A 10 ms, Min150 ms, Max. 2017 Littelfuse, Inc. Application testing is strongly recommended. Specifications are subject to change without notice. Revised: 05/08/17Axial Lead & Cartridge Fuses 520mm > Time-Lag > 977 Series Electrical Characteristic Voltage Rating Agency Approvals Nominal Cold Nominal Interrupting Amp Code Amp Rating Resistance Melting Rating 2 2 (milli-ohms) I t (A sec.) PS AC DC E .500 0.5 500 450 945.0 0.3 x .800 0.8 500 450 417.0 0.8 x 002. 2 500 450 44.5 17 x x 3.15 3.15 500 450 27.5 58 x x 004. 4 500 450 18.4 124 x x 100A 500Vac 005. 5 500 450 11.9 91 x x 200A 450Vdc 06.3 6.3 500 450 9.1 188 x x 008. 8 500 450 8.0 233 x x 010. 10 500 450 7.2 249 x 012. 12 500 450 5.8 388 x 016. 16 500 450 3.9 725 x 2 I t test at 10x rated current. Temperature Re-rating Curve Average Time Current Curves 10000 1000 100 10 1 0.1 0.01 0.001 0.01 0.11 10 100 1000 Current in Amperes 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 05/08/17 Time in Seconds 977.500 977.800 977002 9773.15 977004 977005 97706.3 977008 977010 977012 977016