Fuse Mounting Accessories Page 89 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 Electrical Specifications by Item Ampere Rating (A) Amp Code Max Voltage Rating (V) Interrupting Rating Nominal Cold Resistance (Ohms) Nominal Melting I 2 t (A 2 sec) Agency Approvals 0.500 .500 600 50A @ 250 VAC 60 A @600 VAC 100 A @80 VDC 0.560 0.840 1 x 1.25 600 .1040 16.5 1 x 2.00 002. 600 .0450 17.5 1 x 1 I 2 t is calculated at 10 msecs. or less. I 2 t at 10 times rated current has a typical value of: 24 A 2 sec (2.0A), 22 A 2 sec (1.25A), 1.3 A 2 sec (0.5A). Typical inductance <40nH up to 500 MHz. Resistance changes 0.5% for every C. Resistance is measured at 10% rated current. 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 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. Average Time Current Curves 1000 100 10 1 0.1 0.001 0.01 0.1 1 10 100 CURRENT IN AMPERES TIME IN SECONDS 1.25A 2A .500A Temperature Re-rating Curve Note: 1. Re-rating depicted in this curve is in addition to the standard re-rating of 25% for continuous operation.

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