Staircase light automatic switch (function switch-on delay), retriggerable, with zero-crossing switching, for DIN rail, 17.5 mm wide, 1 normally open contact for 16 A / 250 V AC, contact material AgSnO2, time range 0.5 to 20 minutes, suitable for N-circuit. The connection point of the switch and the L-terminal of the load are at point 3. Lamp loads: incandescent and halogen lamps 3700 W, energy-saving lamps 600 W, LED (230 V AC) 600 W, low-voltage halogen lamps or LED with electronic ballast 600 W, low-voltage halogen lamps or LED with magnetic ballast 1500 W, fluorescent lamps with electronic ballast 1500 W, fluorescent lamps with magnetic ballast 1000 W. Connection voltage: 230 V AC. All connections are on the bottom side. For retrofitting existing systems and as a replacement. The switches must be suitable for switching the lamp load.