Resistance to glow wire test: 750 °C Operating temperature: – 25 °C to + 40 °C Interchangeable membrane glands with direct entry Captive cover with clippable tie between box and cover except boxes 310 x 240 and 360 x 270 Cover opens/closes with a 1/4 turn of a regular screwdriver Can be associated with Nylbloc auto terminal suppport