Lenze 00387067 EZN3A0300H013 Mains Choke

The Lenze 00387067 (model EZN3A0300H013) is a heavy-duty 3-phase mains choke in the EZN3 family designed for power conditioning in variable speed drive installations. Operating on 400 V to 480 V AC industrial power supplies, this component provides a continuous rated current handling capacity of 30 A with a nominal inductance of 1.3 mH. It functions as a passive line filter, suppressing supply grid harmonics, smoothing current ripple, and dampening voltage transients before they enter sensitive frequency inverter electronics.

Integrating the EZN3A0300H013 line reactor into a system involves inline connection between the mains supply and the drive power input terminals. Because it is a passive electromagnetic device, commissioning a replacement unit does not require software downloads, firmware alignment, or parameter programming. Proper installation requires verifying that line voltage, phase connections, and terminal torque match standard electrical practices. Sourcing a tested replacement through ABC Industrial Parts allows maintenance teams to quickly swap out damaged reactors and restore proper drive power protection without system reconfiguration.

This mains choke features an IP00 open-frame structure intended for installation inside protective control cabinets, ensuring adequate thermal airflow across the magnetic core and windings under continuous load. In industrial applications utilizing Lenze 8200 vector or 9300 vector frequency inverters, inserting this line choke prevents nuisance tripping caused by grid disturbances and limits peak inrush currents during power-up. When experiencing mains supply issues or mechanical damage to an existing choke, replacing the unit directly helps preserve drive service life and maintains facility power quality standards.