The GST40A09-P1J is a 40A, 9V power supply from Mean Well. It is an adjustable switching regulator with a universal AC input and an output voltage range of 5 ~ 13.5V DC. It is certified with CE and UL, and is compliant with the EMC and LV standards. It features high efficiency, low noise and long life performance, and is ideal for industrial applications. Its features include short circuit, overload, and overvoltage protections, adjustable speed fan control, and a built-in active PFC function. It also features a low starting current, low input inrush current, and low electromagnetic interference.