Electrically insulated boots that protect workers from risks of pace voltage when there is a line-to-ground voltage fault during an intervention on alternative current 1000V nominal voltage power supply network Made of dielectric rubber Individually tested EN 50321 class 0, Individually tested at 10 000V EN ISO 20345 SBE HRO SRC Basic requirements (SB) Heel energy absorption (E) Contact heat resistance (HRO) EN 13287 Sole slip resistance (SRC) : - Ceramic floor and steel floor