Siemens 63A DIII Diazed Fuse, E33 Thread Size, gG, 500V ac. Breaking Capacity at Maximum Voltage Rating: 50 kA @ 500 V ac, 8 kA @ 500 V dc. Minimum Operating Temperature: -5°C. Maximum Operating Temperature: +40°C. Gauge/Cap Colour: Copper. Body Material: Ceramic. MPN: 5SB431