Lenze 387071 EZN3A2400H002 3-Phase Mains Filter
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Product Information
The Lenze 387071, model designation EZN3A2400H002, is a 3-phase mains filter and line choke manufactured by Lenze as part of the EZN product family. Designed for power conditioning and electromagnetic interference suppression, this passive power component filters high-frequency disturbance on incoming electrical supply lines before it reaches sensitive control electronics. Featuring an inductance rating of 3 x 24 mH with a +/-10% tolerance and a rated current capacity of 1.5 A, this unit attenuates both line-borne noise spikes and harmonic feedback generated by dynamic motor switching operations in industrial machinery.
Integrating a replacement unit into a control cabinet involves connecting the 3-phase supply lines across the filter terminals ahead of the frequency inverter or drive controller. Because the Lenze 387071 functions as a pure power-line conditioning choke, replacing an existing component requires no software setup, firmware installation, or parameter commissioning. To maintain expected suppression characteristics and satisfy EMC guidelines, technicians must ensure that the replacement matches the 1.5 A current limit and 24 mH inductance of the original EZN3A2400H002 specification. Standard installation support and replacement hardware sourcing through ABC Industrial Parts can assist in restoring proper power quality in legacy equipment.
Troubleshooting line filter problems involves verifying phase balance, checking wiring connections, and monitoring downstream drive behavior for transient trip conditions. Operating environments in packaging, textile, and machine tool applications can subject passive line components to continuous electrical and thermal stress. If mechanical damage or winding breakdown occurs within the filter choke, the unit must be replaced, as internal component repairs are not feasible in field conditions. Obtaining a tested replacement module from ABC Industrial Parts offers a fast and effective solution for eliminating mains noise and keeping automated production running smoothly.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 387071 |
| Model / Type | EZN3A2400H002 |
| Product Family | EZN |
| Component Type | 3-Phase Mains Filter / Line Choke |
| Phase Count | 3 |
| Rated Current | 1.5 A |
| Inductance | 3 x 24 mH (+/-10%) |
Replacement and Spare Part Considerations
When replacing a failed Lenze 387071 filter, matching the exact electrical ratings is critical for protecting connected drive controllers. The model EZN3A2400H002 is rated specifically for a maximum continuous current of 1.5 A and an inductance of 3 x 24 mH across its 3-phase lines. Installing an under-rated or mismatched line choke can lead to excessive heat generation, inadequate noise suppression, or premature failure of downstream inverter electronics.
Because this EZN series mains filter is a passive hardware module, physical replacement is straightforward and does not require software configuration or digital parameter transfers. Technicians should verify that 3-phase power is fully isolated before swapping the module and ensure that phase wiring connections are securely torqued to prevent terminal overheating.
Frequently Asked Questions
What is the main purpose of the Lenze 387071 (EZN3A2400H002) mains filter?
The Lenze 387071 is a 3-phase mains filter and line choke that suppresses electromagnetic interference (EMI) and mitigates power line harmonics. It protects connected drive controllers and frequency inverters from voltage spikes while preventing high-frequency switching noise from feeding back into the plant grid.
What are the primary electrical specifications for the EZN3A2400H002?
The Lenze EZN3A2400H002 features a rated current capacity of 1.5 A, a 3-phase configuration, and an inductance rating of 3 x 24 mH (+/-10%).
Does replacing a Lenze 387071 line filter require software configuration?
No, the Lenze 387071 is a passive electrical filter and line choke. Replacing a damaged unit requires physical hardware installation and terminal wiring only, with no software programming or parameter transfer needed.
Which systems commonly utilize the Lenze EZN3A2400H002 filter?
This filter is commonly installed alongside Lenze 3-phase drive controllers rated up to 1.5 A in automated packaging equipment, textile manufacturing machinery, conveyors, and machine tool setups.
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Disclaimer:
We are not an authorised distributor of Lenze.
Product photos are for illustration purposes only and may differ from the actual product delivered.
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