Lenze 00387070 EZN3A1500H003 3-Phase Mains Choke

The Lenze 00387070 EZN3A1500H003 is a 3-phase mains choke from the Lenze EZN Series, engineered to filter supply voltage harmonics upstream of variable frequency drives. Operating on 3-phase AC power networks up to 480 V at 50/60 Hz, this line reactor delivers a rated inductance of 15 mH with a continuous current capacity of 3 A. By dampening peak inrush currents and buffering against grid voltage surges, the choke protects sensitive inverter input rectifiers and DC bus capacitors across industrial environments such as packaging machinery, material handling, textile manufacturing, and automotive assembly lines.

Field integration is straightforward thanks to heavy-duty screw terminals for 3-phase mains input, load output, and direct protective earth grounding connections. As a purely passive power conditioning component, commissioning a replacement EZN3A1500H003 requires no parameter configuration, software tools, firmware alignment, or memory backups. Swapping a unit involves standard electrical isolation, disconnecting terminal wiring, mounting the substitute hardware, and reattaching the power lines. ABC Industrial Parts can assist maintenance teams by supplying prompt replacement hardware to keep critical drive systems running smoothly.

Practical troubleshooting focuses on primary electrical and thermal checks across the installation. Technicians should verify that the incoming line voltage remains within the maximum 480 V AC rating, inspect screw terminals for proper torque and tight electrical contact, and ensure panel enclosure airflow accommodates the 18 W full-load power dissipation. If internal winding damage or an open-circuit fault occurs, the assembly cannot be serviced on the component level; installing a tested replacement unit from ABC Industrial Parts provides a direct route back to reliable drive operation.