LDN20 Series are single phase DIN Rail Switching Power Supplies, ideal mainly for general purposes such as home automation, simple automation in machines, survey systems, telecom, but also the renewable energy field. Its compact size, high efficiency, excellent reliability and excellent power/volume ratio, together with easy installation makes it ideal for various industrial applications. LDN20 Series are Class II isolation devices suitable for SELV and PELV circuitry and are designed to be mounted on DIN rail and installed inside a protective enclosure. Single phase AC input 90 - 264 VAC (110 - 345 VDC) High efficiency and compact size Plastic enclosure, circuit breaker shape Class II, simplified wiring (no PE connection) Overload 170% High operating temperature with no derating RoHS Compliant Industrial Automation Telecom Survey Systems Process Control 2 LDN20 Series LDN20-12 120 - 240 VAC (110 - 345 VDC) 1 12 VDC 1.65 A LDN20-24 120 - 240 VAC (110 - 345 VDC) 1 24 VDC 0.85 A Technical parameters are typical, measured in laboratory environment at 25C and 240 VAC / 50 Hz, at nominal values, after minimum 5 minutes of operation. Rated (UL certified) 120 - 240 VAC Input AC Voltage Range Operating 90 - 264 VAC Input DC Voltage Range Rated 110 - 345 VDC Input Frequency 47 - 63 Hz Vin = 120 VAC 0.4 A Input AC Current LDN20-12 / LDN20-24 Vin = 240 VAC 0.3 A Vin = 110 VDC 0.3 A Input DC Current LDN20-12 / LDN20-24 Vin = 345 VDC < 0.1 A Inrush Peak Current 50 A Touch (Leakage) Current 0.2 mA Internal Protection Fuse Not user replaceable Fuse 1AT It is strongly recommended to provide external surge MCB 6 A C curve Recommended External Protection arresters (SPD) according to local regulations Output Power 20 W LDN20-12 12 VDC (Fixed) Rated Voltage LDN20-24 24 VDC (Fixed) LDN20-12 1.65 A Continuous Current LDN20-24 0.85 A Vin = 120 VAC 2.60 A LDN20-12 Vin = 240 VAC 3.25 A Overload Limit Vin = 120 VAC 1.3 A LDN20-24 Vin = 240 VAC 1.7 A LDN20-12 8 A Short Circuit Peak Current LDN20-24 4 A Load Regulation 1% 1 Ripple & Noise 100 mVpp Hold up Time 5 ms Protections protection Output overvoltage Status Signals Green LED = DC OK Parallel Connection Possible for redundancy (with external ORing module) Efficiency > 80% Dissipated Power < 6 W 1 Ripple and Noise are measured with 20MHz bandwidth, probe terminated with a 0.1 F MKP parallel capacitor. NOTE: Power rating, losses, efficiency, ripple, thermal behaviour and start-up may change outside of the nominal rated input range. Contact factory for details. tech.support psbel.com