1 A to 820 A current development needs of science and technology overload relay with a more advanced transformer and trip unit, so that a more simple and economical motor protection. Moeller provides all of the Z-type overload relay can be in the event of phase failure, overload and fault phase current imbalance protection. ZEV electronic overload relay series with more of the leading features: starting for the worst conditions for up to 40 seconds of starting the motor protection; * tripping curve between grades 5-40 are divided into 8 files adjustable to suit different motor protection; * extensive motor protection features, such as overload protection, phase protection, thermistor protection, ground fault protection, phase imbalance protection and internal fault self-diagnosis; * through the installation of external zero sequence current transformer, you can provide in the event of ground fault protection; * with direct connection to the motor thermistor to provide a more comprehensive motor protection; * the same size range of 40-820A, to facilitate user selection and change the system capacity ; * with LCD display and keypad, can be directly set the parameters and operation, and can display running current, fault signal and the phase symbol; * with ring transformer, easy installation, saving space. Compared with the traditional transformer, the volume reduced by 58 times; * equipped with auxiliary contacts, indicating various failures. (Download: ZEV: New overload relay)