MEAN WELL HSN-300 Series is a 300W Single Output Switching Power Supply. The series features a ultra low profile (31mm height) and slim design (81mm width), making the power supply ideal for sign panel applications. Two input models are available, 90~132VAC and 180~264VAC. Output voltage provides either 4.2V or 5V, allowing the HSN-300 series to be used with both  old and new generations of sign panel driver ICs. The devices operate at -20ºC to +70ºC with free air convection cooling. Applications include indoor and outdoor LED electronic signage, LED moving signs, and LED TV walls.

MEAN WELL HSN-300 5A/5B/4.2A/4.2B Display Power Supply Features
 
31mm ultra low profile, slim design
Input range: A-Type, 90~132VAC; B-Type, 180~264VAC
Rated output power up to 300W (250W for 90~132VAC input models)
High working efficiency up to 86%
Fanless design, cooling by conduction via bottom plate (minimal size 450 x 450 x 3 mm)
-20ºC ~+70ºC working temperature (HSN-300 must be firmly mounted on an aluminum plate or the cabinet of sign panel module)
Low leakage current <1mA
Protections: short circuit / overload / over voltage / over temperature
Conformal coating on PCB
LED indicator for power on
Approval: UL60950-1
Dimension (LxWxH): 210x 81x 31 mm