Description: Level Switch, Series 500 is simple in design and rugged in construction. It is provided with explosion proof enclosures and is ease of installation. The general specification include: specific gravity - 0.5 to 1.4; max temperature rating - 400ºC; cooling fin - greater than 250ºC; extension rod - less than 10ºC; IBR - as required; switch type - snap action micro switch; enclosure - weather proof (IS 2147), explosion proof (IS 2146), ISI CM/L 6084466; electrical area classification - Group IIA & IIB Zone 1, Zone 2/Nema 4&7/IEC Gr. C, D, E, F, G NECG; switch contact - SPDT 2 Nos./SPDT 1 Nos.; contact rating and contact coating - 230 V AC 5 A/30 V DC 2 A silver alloy contact, 125 V AC 0.1 A/30 V DC 0.1 A gold alloy contact (others on request); cable entry size - ½' NPT (F) _ NPT (F) (other on request); and cable entry type - double entry/single entry.