The S DRL-DIN rail power supply series is suitable for building automation and, in particular, for the narrow spaces in meter locations, distribution boxes or sub-distributions. It provides 10 - 100 W output power, meets the ErP efficiency guidelines and is controlled by a network-wide range input (85-264 V AC). All four performance classes are available with 24 VDC nominal output voltage available, there are also 12 V DC models with 10, 30 and 60 W output power. All models (except the 10 W devices) have trimmbare outputs. The S DRL series has a protection class II structure (protective insulation) and therefore requires no protective earth conductor. The test voltage between input and output is 3 kV AC. All models are convection cooled and for operating temperatures between -20°C and +71°C. In addition, the series is equipped with long-life electrolytic capacitorsThis text is machine translated.