Siemens 3TH8280-0AJ2 is an eight-pole contactor relay with eight normally open contacts and a 115 V AC coil, designed for DIN rail mounting in industrial control panels. This 3TH-series device operates on standard AC supply at 50/60 Hz, and the model is listed as discontinued by the manufacturer, which may affect availability and require substitution planning. With its eight NO contacts across eight poles, it enables multi-line switching in complex control and automation circuits where compact, centralized relays are advantageous.
