The JCASE is a cartridge style fuse with female terminal design, providing both increased time delay and low voltage drop to protect high current circuits and handle inrush currents. The JCASE was designed and patented by Littelfuse. 20A 30A 40A 50A 60A JCASE® Cartridge Fuse 1000 TIME IN SECONDS 100 10 1 0.1 14.1 12.0 0.01 1 10 100 1000 CURRENT IN AMPERES 10000 TIME-CURRENT CHARACTERISTICS 27.0 24.4 % of Rating 18.7 12.1 100 135 200 350 600 10.0 1.0 5.5 See page 32 for JCASE Shunt — 1800 s 60 s 7s 1s Typ. Voltage Drop at Rated Current (mV) 106 101 91 87 88 87 110 Rerating Factor (% Rated Current) Housing Color Blue White Pink Green Red Yellow 100 hrs 60 s 4s 0.2 s 0.04 s JCASE Fuse Series Temperature Rerating Curve JCASE CARTRIDGE FUSE TABLE Part Number 495020 495025 495030 495040 495050 495060 Maximum Interrupting Rating: 1000A @ 32 VDC Voltage Rating: 32 VDC Insertion Force: 53N max. (12 lb.) Extraction Force: 9N min. (2 lb.) Ambient Temp: -40˚C to + 125˚C 6.7 Current Rating (A) 20 25 30 40 50 60 Opening Time Minimum 105 100 95 90 85 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 Ambient Temperature (°C) 15