Siemens AG Monitor - Relay Output 3UG45112AQ20

The 3UG4511-2AQ20 is a phase sequence monitoring relay designed for AC control supply voltages of 420 to 690 V at 50 or 60 Hz, with analog setting and LED display. It features one change-over contact with a rated current of 3 A at 250 V AC and 1 A at 24 V DC, providing automatic reset and phase sequence recognition. The device has a snap-on mounting style with dimensions of 84 mm in height, 22.5 mm in width, and 91 mm in depth, and uses spring-loaded terminals for connection of solid or stranded conductors between 0.25 and 1.5 mm². It operates in ambient temperatures ranging from -25 to +60 °C, meets IP20 protection, and is certified for surge voltage resistance up to 6 kV. Galvanic isolation is provided between input, output, and supply circuits.