Explosion-proof socket 16A max 240V AC, PTB-No.03 ATEX 1050x, Ex-protection class EEx ed IIC T6/T5. Brass casing, cover and cap, undetachable inner hexagonal cover screws. Nominal voltage: 100V – 130V 4h 200V – 240V 6h. Socket insert in protection pressure resistant enclosure, security switching arrangement with locking device, inside and outside earth connections