Fuse Mounting Accessories Page 102 Fuse & Mounting Accessories

2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 03/03/17 Surface Mount Fuses 159 Fuse and Clip Series GR 1089 AC power fault 1st level inter-building (fuse not allowed to open) 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 .33 1 15 min. removed 1.25, 2.0 2 100 .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 Circuite Vrms Short (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). 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 Requirements Test Voltage (V) Current (A) Waveform Repeti- tions 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 GR 1089 Inter-building requirements GR 1089 1st level lighting surge inter-building (Equipment under test can not be damaged and must continue to operate properly) Surge Minimum Peak Voltage (V) Minimum Peak Current (A) Max. Rise/Min. Decay (s) Repetitions Each Polarity Fuse Choices 1 600 100 10/1000 25 1.25, 2.0 2 1000 100 10/360 25 1.25, 2.0 3 1000 100 10/1000 25 1.25, 2.0 4 2500 500 2/10 10 1.25, 2.0 5 1000 25 10/360 5 0.5, 1.25, 2.0 GR 1089 2nd level lightning surge telecom port (Equipment under test shall not become a fire, fragmentation, or electrical safety hazard) Surge Minimum Peak Voltage (V) Minimum Peak Current (A) Max. Rise/Min. Decay (s) Repe- titions Each Polarity Fuse Choices 1 5000 500 2/10 1 0.5, 1.25, 2.0 Alter- native 5000 500/8=625 8/10 1 0.5, 1.25, 2.0 If sufficient series resistance is used, then the 0.5 fuse may be used in test conditions 1-4. The 0.5 fuse will open during these test conditions. The 1.25 & 2.0 will not open thus providing operational compliance. UL 60950 (EN 60950, formerly UL 1950) Power Cross Test (L=Longitudinal, M=Metallic) UL 60950 (EN 60950, formerly UL 1950) Impulse Test and Steady-State Electric Strength Test

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