The Schneider Electric Acti9 iTLs is a modular impulse relay. This 1P device has 1 normally open contact. Rated current is 16A, 24VAC to 250VAC operating voltage and it operates with 230VAC to 240VAC or 110VDC control voltage. Electrical endurance goes up to 200000 cycles for AC-21 or 100000 cycles for AC-22. The switching frequency is 100 switching operations/day or 5 switching operations/minute.It is mainly used for lighting control applications This impulse relays allow remote indication of their operating state The operating frequency is 50Hz or 60Hz It is DIN rail mountable Pollution degree is 3 Overvoltage category is IV