Switching power supply unit. Rated capacity 12W. Standby loss 0.2 watt only. Modular devices for DIN 60715 TH35 rail mounting. 1 module = 18mm wide, 58mm deep. At a load of more than 50% of the rated capacity and always if there are adjacent switching power supply units from 12W rated capacity and if there are dimmers a ventilation clearance of 1/2 module must be maintained with the spacers DS12 on both sides. Input voltage 230V (-20% up to +10%). Efficiency 86%. Stabilised output voltage ±1%, low residual ripple. Short-circuit proof. Overload protection and over-temperature switch-off by means of swichting off with automatic switching-on after fault clearance (autorecovery function).