P17 Tempra combined units to be composed - IK 08 according to IEC 62262 - Self - extinguishing : 650 °C - Max. IP 66Combined units height 280 mm to 501 mm Base for 280 x 125 mm faceplates - max. IP 66 - Base up to 3 sockets 16 A - Rail 5 modules 17.5 mm - External dimensions (Height x Width) : 421 x 125 mm