The EF750-800 Is An Self-Supplied Electronic Overload Relay, Which Means No Extra External Supply Is Needed. It Offers Reliable and Fast Protection For Motors In The Event Of Overload or Phase Failure. Easy to Use Like A Thermal Overload Relay and Compatible With Standard Motor Applications, The Electronic Overload Relay Is Convincing, Above All, Due to Its Wide Setting Range, High Accuracy, High Operational Temperature Range and The Possibility to Select A Trip Class (10E, 20E, 30E). Further Features Are