AQAD171DL is a compact solid state relay (SSR) designed for DC control applications with a 10A maximum load current at 600V DC output. The relay features a control voltage range of 4 to 32V DC with a maximum input current of 20mA, and includes internal diode protection on the output side along with LED indication for operation status verification. Key performance characteristics include a maximum ON resistance of 200mO, operate time of 5ms maximum, and release time of 1ms maximum, with insulation resistance of 100MO between input and output at 500V DC. The device is housed in a compact screw terminal package measuring 40×58×25.5mm with a 47.5mm mounting pitch, and is certified to C-UL (UL508, UL60950-1) and VDE (EN60950-1) standards. Typical applications include photovoltaic power generation systems, storage battery systems, and control of DC heaters and motors in industrial equipment.