Switch socket | Explosion-protected | Type : 8579/31-407 | AC rated operational voltage : 500 V | Frequency range : 50 - 60 Hz | Detailed number of poles : 4 P (3 P + PE) | Colour code : Black | Coding (clock hour position) : 7 | Enclosure material : Polyester | Application range (zones) : 1 , 2 , 21 , 22 | Scope of validity : European Union (ATEX) | IECEx | Min. ambient temperature : -30 °C | Max. ambient temperature : +55 °C | Rated operational current : 63 A | Gas explosion protection : II 2 G Ex db eb IIC T5 Gb | Dust explosion protection : II 2 D Ex tb IIIC T75 °C Db | Max. ambient temperature 2 : +40 °C | Gas explosion protection2 : II 2 G Ex db eb IIC T6 Gb | Dust explosion protection 2 : II 2 D Ex tb IIIC T60 °C Db | Degree of protection (IP) : IP66 | Entries : 1 x M25 x 1,5 | Screw connections : 1 x M50 x 1.5 | Entry type 1 : 8161/7-M50-3516 | Cable entry material : Polyamide, black | Cable diameter : 16 … 35 mm | Stopping plug : 1 x M25 x 1.5 | Stopping plug material : Polyamide, black | Plate with threaded holes : - | For further information, see : r-stahl.com WebCode 8579A