1. The 3UG4581-1AW30 is a three-phase monitor relay manufactured by Siemens.
2. It is designed to protect motor circuits from overloads and phase losses, and features a 0-1000Hz frequency range.
3. It comes with one NO and one NC contact, a dynamic or static phase sequence, phase loss and overload protection, manual or automatic reset, trip delay, phase sequence and duetz protection, and a wide range of auxiliary contacts for easy connection.