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Littelfuse SE-330AU-26-00 NGR Monitor 48VDC Dual RJ45 IEC 61850 NO
$5,171$6,205 (-17%)
Littelfuse SE-330AU-26-00 Neutral Grounding Resistor (NGR) Monitor, nominal 48 VDC supply, provides earth-fault and NER integrity monitoring. Genuine Littelfuse product from authorized distribution in Batam with fast delivery across Indonesia and Southeast Asia.
The Littelfuse SE-330AU-26-00 is an NGR monitor (Neutral Grounding Resistor Monitor) designed for continuous verification of neutral-to-earth paths on transformers and generators. With a nominal 48 VDC supply and wide DC supply options, it delivers earth-fault monitoring, neutral current/voltage/resistance detection and adjustable ground-fault trip settings. Ideal for protection relay panels, generator sets, and medium-/low-voltage transformer applications where IEC/IEEE-compliant neutral-earthing supervision and IEC 61850 communications are required.
Key Features
- Continuous monitoring of neutral current, neutral-to-earth voltage and neutral-to-earth resistance.
- 2 Form A (NO) and 2 Form C (changeover) auxiliary contacts for alarm and trip outputs.
- Fail-safe operation with local reset switch and remote reset/contact input.
- Adjustable ground-fault trip levels and time settings to suit varied systems.
- Integrated analog current output and standard harmonic filtering for resistance-grounded AC systems.
- Communication-ready with dual RJ45 ports and IEC 61850 support for protection networks.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330AU-26-00 |
| Product Type | Neutral Grounding Resistor Monitor (NGR Monitor) |
| Supply Voltage | 28–52 VDC and 36–72 VDC model ranges (nominal 48 VDC indicated) |
| Contacts | 2 × Form A (NO), 2 × Form C (changeover) |
| Monitored Parameters | Neutral current, neutral-to-earth voltage, neutral-to-earth resistance |
| Outputs | Analog current output; alarm/trip contacts |
| Communications | Dual RJ45 ports; IEC 61850 compatible |
| Protection Mode | Fail-safe operation; adjustable GF trip levels/times |
Applications
Used for neutral-earthing supervision on transformers and generator sets, protection panels in distribution substations, monitoring of resistance-grounded AC systems, and integration into IEC 61850 communication networks for plant protection.
We supply genuine Littelfuse SE-330AU-26-00 units through authorized channels from our Batam base, with fast delivery across Indonesia and Southeast Asia. For competitive pricing and quick lead times, contact us to request a formal quotation today.
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