Position switches | explosion-protected | Type : 8074/2-1-WH-40 | AC op. volt. (equal potential): 500 V | AC op. volt. (uneq. potential): 250 V | DC rated operational voltage : 125 V | Rated operational current : 4,4 A | Version : 2nd generation | Contacts : 1 NC + 1 NO | Degree of protection (IP) : IP66 | Application range (zones) : 1 , 2 , 21 , 22 | Gas explosion protection : II 2 G Ex de IIC T6....T5 Gb | Dust explosion protection : II 2 D Ex tb IIIC T80 °C ....T95 °C Db | Contact material : Silver-nickel | Enclosure material : Corros.-resist. Al, pwdr-coat. | Number of NCs : 1 | Number of NOs : 1 | Actuator : Roller lever | Switching function : Slow-action contact | Maximum operating frequency : 1800 operating cycles/h | Electrical service life : Max. 10^6 operating cycles | Cable glands and entries : 1 x M20 Ø 4 – 13 mm | Clamping range : 4 ... 13 mm | For further information, see : r-stahl.com WebCode 8074D