MEAN WELL Switching Power Supply, RS-50-12, 12V dc, 4.2A, 50W, 1 Output, 125 → 373 V dc, 88 → 264 V ac

The Mean Well RS-50 series 50.4W single output AC to DC embedded switch mode power supply has an output current rating of 4.2A at 12VDC. It has a universal input supply voltage rating from 88VAC to 264VAC and 125VDC to 373VDC.
Note:
De-rating 2% per °C above 50°C on all types except

high-efficiency up to 84.5%
Long life and high reliability
High power density
High operating temperature up to 70°C
Long life electrolytic capacitors 105°C
Easy installation
Screw terminals
Adjustable output voltage for single output types, 10.8V to 13.2V at 12V and 22V to 27.6V at 24V
Adjustable output voltage for dual output types on output 1, -5% to 10%
Dual outputs have a minimum load requirement
The total load must not exceed the rated output power
Cooling by free air convection
Withstands a 5G vibration test
Overload and overvoltage protection
Full load burn-in test

EN 60950-1
UL 60950-1
TUV approved
CB approved
UL approved
EN 61000-3-2 (harmonic current)
EN 55022 class B (EMC)
EN55032 (CISPR32) class B
EN61000-3-2,-3
GB9254 class B
GB17625.1
EN55024
EN61000-6-1
Criteria A