E16DU18.9 is a 3-pole electronic overload relay designed to provide flexible overload protection for three-phase motors. It features a current setting range of 5.7-18.9 amps with selectable trip classes (10E, 20E, 30E) and includes RESET, TEST, and STOP functions. The relay offers 1 NC and 1 NO output contacts and supports both manual and automatic reset modes. Compatible with B/C and B/C7 series contactors, this relay provides reliable protection against motor overload and phase failure conditions. It is UL, CSA, and CE approved, making it suitable for industrial motor control applications requiring dependable overload protection.