Ex-proof steel light for high pressure lamps down to -20 °C for Zone 1/21, PX 0440S, HST - 400 W, Housing holes: 2 x M25, metal thread, Reflector: narrow beam, For ambient temperatures up to + 55 ° C, For light source (not included): 1 x 400 W HPS (high pressure sodium lamp), Nominal lamp luminous flux: 48000 lm (lamp dependent), Lamp base: E40 in accordance with IEC 60238, Two-sided through wiring: No, Cable entries/housing holes: 2 x thread M25 x 1.5, 1 x Ex-e screw cap M25, Housing material: Cast light metal, Protective hood/protective cover: Brosilicate glass, Rated voltage: 230 V AC, Frequency: 50 Hz, Rated current: 2.02 A, Marking according to 94/9/EC: Ex II 2G Ex de IIB T3 Gb , Ex II 2D Ex tb IIIC T170°C/T195°C Db IP66, EC type examination certificate: BVS 09 ATEX E 050 X, Permissible ambient temperature: -20 °C to 55 °C, Dimensions (L x W x H): 546 x 443 x 396 mm, Weight: 31 kg, Protection class: I, Protection type according to EN 60529: IP67