The Dold BA9038.12 AC50/60HZ 230V is a robust thermistor motor protection relay from the BA 9038 series, specifically designed for industrial applications to provide thermal overload protection for electric motors. It monitors the motor temperature via up to six connected thermistors, thereby protecting against damage caused by overheating. In addition to motor monitoring, the device is also suitable for temperature monitoring of bearings, gearboxes, oils, and coolants, making it a versatile component in process and machine control. The auxiliary voltage of AC 230 V at a nominal frequency of 50/60 Hz enables reliable integration into existing electrical systems. The relay features 2 changeover contacts as output contacts and is housed in a control cabinet enclosure with a width of 45 mm, ensuring compact installation in standard control panels. The maximum measurement range exceeds 3 kΩ, enabling precise temperature detection over a wide range.