The 77A-400M-00 is a high-current, low-voltage, high-efficiency switch mode power supply made by Fastron. It has a wide input voltage range (85-264V AC), a maximum output current rating of 400mA, and an efficiency of up to 95%. The device is fully protected with overload, overvoltage, and short circuit protection, as well as thermal protection. It features excellent line and load regulation, and has both a regulated output voltage and a low ripple output. The power supply is designed for use in medical, consumer electronics, industrial, telecommunications, and other applications involving high efficiency and reliable power supply solutions.