100000 90000 80000 70000 60000 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 90 80 70 60 50 40 30 20 10 1000 900 800 700 600 500 1000 900 800 700 600 500 400 400 300 300 - 2R 200 200 - 3R - 4R 100 90 80 70 60 50 - 12R 40 - 6R 40 30 30 - 18R - 24R 20 TIME IN SECONDS - 9R 100 90 80 70 60 50 - 5R 20 10 9 8 7 6 5 10 9 8 7 6 5 4 4 3 3 2 2 1 0.9 0.8 0.7 0.6 0.5 1 0.9 0.8 0.7 0.6 0.5 0.4 0.4 0.3 0.3 0.2 0.2 0.1 0.09 0.08 0.07 0.06 0.05 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.04 0.03 0.03 0.02 0.02 0.01 0.01 100000 90000 80000 70000 60000 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 TIME CONSTANT/POWER FACTOR: 4000 TEST VOLTAGE: 8.25kV 3000 2000 1000 900 800 700 600 500 400 300 200 100 90 80 70 60 50 40 30 20 10 CURRENT IN AMPERES FUSE CATALOG NUMBER: MELTING CURVES 8.25V R-RATED 2R - 24R BASIS FOR DATA: LITTELFUSE, INC. CHICAGO, IL. USA TIME CURRENT CHARACTERISTIC CURVES - DATA GENERATED IN EXCEL - DRAWN BY: LLL DATE: 05/17/2013 REVISION: B DRAWING NO.: SHEET 2 OF 2 FCC03-8.25R-002