Lenze 700253 Mains Filter B – 3-Phase 480V 12A EMC Filter
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Product Information
The Lenze 700253 Mains Filter B is a 3-phase electromagnetic compatibility noise filter designed to suppress high-frequency conducted radio interference generated by variable frequency drives. Belonging to the Mains Filters for Lenze Frequency Inverters product family, this EMC mains filter operates across nominal line voltages up to 480 V AC at 50/60 Hz with a continuous current rating of 12 A. Housed in an IP20 finger-safe enclosure, the unit ensures strict compliance with EN 55011 Class B and EN 61800-3 Category C1 and C2 standards to prevent electrical noise from feeding back into the supply grid.
Integrating the filter into a control cabinet involves connecting the incoming 3-phase power mains and drive side cabling to physical screw terminals, alongside securing the dedicated earth stud for low-impedance ground bonding. As a passive hardware component, the unit requires no software, runtime firmware, or parameter configuration during commissioning, making mechanical mounting and correct line-and-load wiring the primary tasks when replacing a unit. The filter is designed for direct compatibility with Lenze 8200 vector and Lenze 9300 series frequency inverters, and technical support from ABC Industrial Parts can assist maintenance teams with sourcing exact replacements or verifying successor cross-references.
With a low thermal dissipation rating of approximately 15 W under continuous nominal load, the unit maintains efficiency within enclosed control panels. Diagnostic procedures rely on visual inspection and basic electrical verification, as passive filters contain no active status LEDs or fieldbus diagnostic interfaces. Maintenance checks should confirm tight terminal screw connections, proper operating voltage up to 480 V AC, and intact ground continuity; internal insulation failure or phase shorting requires complete unit replacement, where obtaining a tested exchange component from ABC Industrial Parts provides a prompt resolution to eliminate line disturbance.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 700253 |
| Model / Type | Mains Filter B |
| Component Type | EMC Mains Filter |
| Product Family | Mains Filters for Lenze Frequency Inverters |
| Rated Voltage | 480 V AC |
| Rated Current | 12 A |
| Number of Phases | 3 |
| Mains Frequency | 50/60 Hz |
| EMC Filter Class | Class B (EN 55011) / EN 61800-3 Category C1/C2 |
| Power Loss | 15 W |
| Protection Rating | IP20 |
Replacement and Spare Part Considerations
When replacing an existing Lenze 700253 Mains Filter B, verify that the system operating voltage does not exceed 480 V AC 3-phase and that continuous operating current remains within the 12 A limit. Ensure compatibility with the installed drive family, as this model is designed for integration alongside Lenze 8200 vector and Lenze 9300 series frequency inverters.
Proper installation requires connecting phase conductors securely to the finger-safe screw terminals and establishing a low-impedance connection via the dedicated earth stud. Ensuring effective protective grounding is essential for the filter to divert high-frequency noise currents and achieve EN 55011 Class B compliance.
For modernizing or replacing legacy installations where original units are unavailable, Lenze recommends the EZN3 series, specifically type EZN3A0120H030, as a successor filter. Verify cabinet dimensions, mounting points, and terminal layouts prior to retrofitting replacement models into existing panel spaces.
Frequently Asked Questions
What is the primary function of the Lenze 700253 Mains Filter B?
The Lenze 700253 is a 3-phase EMC mains filter designed to suppress high-frequency conducted radio frequency interference from frequency inverters, ensuring compliance with EN 55011 Class B and EN 61800-3 standards.
Which drive series are compatible with the Lenze 700253 filter?
This filter is designed for integration with 3-phase Lenze 8200 vector and Lenze 9300 series frequency inverters.
Does the Lenze 700253 filter require programming or software setup?
No software, firmware, or parameter configuration is required. The 700253 is a passive filter component that functions immediately upon proper physical and electrical installation.
What are the key electrical power ratings for this mains filter?
The filter operates on 3-phase systems up to 480 V AC at 50/60 Hz, supports a continuous rated load current of 12 A, and has a power loss rating of approximately 15 W.
What is the recommended successor model for the Lenze 700253 filter?
The recommended successor series is the Lenze EZN3 series, specifically model EZN3A0120H030.
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Disclaimer:
We are not an authorised distributor of Lenze.
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