Lenze 378873 ELN1-0500H009 Mains Choke
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Product Information
The Lenze 378873, model ELN1-0500H009, is a single-phase mains choke from the ELN Mains Chokes family designed for power line filtering and harmonic suppression in variable frequency drive applications. Operating as a line reactor, this component conditions the incoming power supply for sensitive drive electronics across single-phase AC networks rated up to 500 V AC. With a rated current capacity of 9 A and a nominal inductance of 5 mH, the device smooths line current spikes, reduces peak mains current, and protects frequency inverters against destructive line voltage transients and voltage surges in industrial automation applications.
Installing or replacing the Lenze 378873 line reactor in a drive system requires matching physical line connections and electrical specifications. As a passive inductive component, it requires no software configuration, firmware updates, DIP switch settings, or parameter transfers during commissioning. Integration into the machine involves wiring the single-phase power lines through the choke terminals upstream of the inverter. When preparing a spare unit, verifying that the replacement matches the exact 9 A rated current, 5 mH inductance, and 500 V AC maximum supply voltage rating ensures seamless installation, and ABC Industrial Parts can assist in sourcing ready-to-install units.
Because the ELN1-0500H009 is a robust passive electrical component, it does not feature integrated diagnostic LEDs, status indicators, or digital error reporting. First-line troubleshooting involves checking power supply availability, inspecting wiring terminal tightness, and confirming that line currents remain within the 9 A rated limit. If winding insulation breaks down or physical thermal damage occurs from severe supply anomalies, internal hardware repairs are not field-serviceable. Replacing a failed choke with a fully tested exchange unit from ABC Industrial Parts offers a swift resolution to prevent downtime and restore power conditioning to connected drives.
Technical Specifications
| Manufacturer | Lenze |
| Part number | 378873 |
| Model/type | ELN1-0500H009 |
| Component type | Mains Choke |
| Product family | ELN Mains Chokes |
| Rated current | 9 A |
| Inductance | 5 mH |
| Number of phases | 1 |
| Maximum supply voltage | 500 V AC |
Replacement and Spare Part Considerations
When replacing an existing Lenze 378873 (ELN1-0500H009) mains choke, electrical ratings must be verified against the connected variable frequency drive and supply network. The replacement unit must match the 9 A rated current and 5 mH nominal inductance to maintain optimal saturation resistance and harmonic filtering capabilities.
Because this line reactor is entirely passive, commissioning a spare requires no software programming, parameter downloading, or complex system setup. Replacement is a direct hardware swap requiring proper wiring of the single-phase power supply connections to the appropriate input and output terminals.
Frequently Asked Questions
What is the function of the Lenze 378873 mains choke?
The Lenze 378873 (ELN1-0500H009) is a single-phase line reactor that filters incoming power line supplies, reduces network harmonic distortion, and protects frequency inverters from voltage transients and current spikes.
Does the Lenze ELN1-0500H009 require software or parameter configuration?
No, the ELN1-0500H009 is a passive hardware component operating without firmware, parameter settings, or software configuration.
What supply voltage range and current rating does this mains choke support?
This choke is rated for single-phase AC networks operating up to 500 V AC, with a rated current of 9 A and a nominal inductance of 5 mH.
What applications commonly use the Lenze 378873 line reactor?
It is commonly used with single-phase Lenze frequency inverters in material handling, packaging, HVAC, pumping, and general industrial automation systems.
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Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
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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