Siemens 20A DII Diazed Fuse, E27 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: Blue. Body Material: Ceramic. MPN: 5SB271