Fuse Mounting Accessories Page 90 Fuse & Mounting Accessories

2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 03/03/17 Surface Mount Fuses Surge Resistant > 461 Series TeleLink Fuse GR 1089 AC power fault 2nd level (fuse can open but must open in a safe and controlled manner) Test Vrms Short Circuit Current (A) Hits Duration Primary Protector Fuse Choices 1 50 0.33 1 15 min. removed 1.25, 2.0 2 100 0.17 1 15 min. removed 1.25, 2.0 3 200,400, 600 1 60 1 sec. removed 1.25, 2.0 4 1000 1 60 1 sec. operative 1.25, 2.0 5 Diagram Diagram 60 5 secs. removed 1.25, 2.0 6 600 0.5 1 30 secs. removed 1.25, 2.0 7 440 2.2 5 2 secs. removed 1.25, 2.0 8 600 3 1 1.1 secs. removed 1.25, 2.0 9 1000 5 1 0.4 sec. in place 1.25, 2.0 Test Circuit Vrms Short Circuit Current (A) Duration Fuse 1 120,277 25 15 min. 0.5, 1.25, 2.0 2 600 60 5 secs. 0.5, 1.25, 2.0 3 600 7 5 secs. 0.5, 1.25, 2.0 4 100-600 2.2 15 min.. 0.5, 1.25, 2.0 5 Diagram Diagram 15 min. 0.5, 1.25, 2.0 Fuse must open before wiring simulator fuse (MDL 2.0). Surge Voltage (V) Waveform (s) Current (A) Repetitions Recommended Fuse Metallic A 800 10560 100 1 ea. polarity 1.25 Longitudinal A 1500 10160 200 1 ea. polarity 1.25 Metallic B 1000 9720 25 1 ea. polarity 1.25 Longitudinal B 1500 9720 37.5 1 ea. polarity 1.25 TIA -968-A (formerly FCC Part 68) Surge Waveforms (fuse can not open during type B events) UL 60950 requirements UL60950 (EN 60950) (formerly UL 1950) Power Cross (L = longitudinal, M = metallic) Test Number Voltage (V) Current (A) Time Fuse Choices L1 600 40 1.5 secs. 0.5, 1.25, 2.0 L2 600 7 5 secs. 0.5, 1.25, 2.0 L3 600 2.2 30 min. 0.5, 1.25, 2.0 L4 200 2.2 30 min. 0.5, 1.25, 2.0 L5 120 25 30 min. 0.5, 1.25, 2.0 M1 600 40 1.5 secs. 0.5, 1.25, 2.0 M2 600 7 5 secs. 0.5, 1.25, 2.0 M3 600 2.2 30 min. 0.5, 1.25, 2.0 M4 600 2.2 30 min. 0.5, 1.25, 2.0 S election of test number depends on current limiting F fire enclosure/spacing of end product 26 AWG line cord removes L1/M1 test requirement L5 conducted only if product does not pass section 6.1.2 L2,M2,L3,M3,L4,M4 conducted if not in a fire enclosure Fuse must open before the wiring simulator fuse (MDL 2.0). UL60950 (EN 60950) (formerly UL 1950) Impulse Test and Steady-State Electric Strength Test Test Voltage (V) Current (A) Waveform Repetitions Fuse Choices Impulse For handheld units 2500 62.5 10700ms +/- 10 w/60 secs. rest 0.5, 1.25, 2.0 Non handheld 1500 37.5 10700ms +/- 10 w/60 secs. rest 0.5, 1.25, 2.0 Steady-State For handheld units 1500 60Hz 0.5, 1.25, 2.0 Non handheld 1000 60Hz 0.5, 1.25, 2.0 For the type A events the 0.5 fuse will open, providing non-operational compliance. The 1.25 & 2.0 will not open, providing for operational compliance with TIA-968-A type A surge events. L F 1.25A T 3.12 (.123") 3.12 (.123") 10.10 (.397") 3.25 (.128") 3.43 (.135") 12.6 (.496") 6.10 (.240") Recommended Pad Layout 1.70 typ (.067") Dimensions GR 1089 AC power fault 1st level inter-building (fuse not allowed to open)

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