The ABB 1SFL471001R8011 is a three‑phase power contactor from ABB’s A145 series, designed for general industrial control and switching applications. The device is used to switch and control three‑phase electrical power circuits, commonly for motor starting/stopping, isolation, bypass switching, and distribution functions in control panels and automation systems. It features both main power contacts and built‑in auxiliary contacts, making it suitable for control logic interfacing and feedback within electrical control systems.