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Littelfuse SE-330-26-00 NGR Monitor, 48VDC, Dual RJ45, IEC 61850, NO
$5,171$6,205 (-17%)
Littelfuse SE-330-26-00 NGR monitor (48 VDC) — neutral grounding resistor protection relay with IEC 61850 and dual RJ45. Genuine Littelfuse unit, supplied from Batam with fast delivery across Indonesia and Southeast Asia.
The Littelfuse SE-330-26-00 is a neutral grounding resistor (NGR) monitor and protection relay offering a 48 VDC supply option for resistance-grounded AC systems. It provides continuous NGR and ground-fault monitoring, shorted-resistor detection, and communications over IEC 61850/USB. Suitable for substations, power plants and industrial distribution, this protection relay helps ensure fast coordination and reliable neutral-ground protection.
Key Features
- Conformally coated protective relay with 2 Form A (NO) and 2 Form C (changeover) output contacts.
- Supports fail-safe and non-fail-safe modes; front-panel or remote N.O. reset; latching or autoreset operation.
- Built-in harmonic filtering, selectable RF trip levels and times for precise NGR detection.
- Analog 4–20 mA output and pulsing output (SE-330 model) for SCADA and trip signalling.
- IEC 61850 and USB communications with dual RJ45 connectors; universal CT compatibility.
- IEEE device functions: 50G, 50N, 51G, 51N, 59N and 86 for versatile protection schemes.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330-26-00 |
| Component | Neutral Grounding Resistor Monitor / Protection Relay |
| Supply Voltage | 28–72 VDC (48 VDC model option) |
| Output Contacts | 2 Form A (NO) and 2 Form C |
| Communications | IEC 61850, USB; dual RJ45 connectors |
| Analog Output | 4–20 mA |
| Functions / IEEE Device Numbers | 50G, 50N, 51G, 51N, 59N, 86 |
| Adjustable Pickup | 2–100 % |
| Adjustable Time Delay | 0.1–10 s |
| Coating | Conformal coating |
| System Compatibility | Resistance-grounded AC systems; universal CT compatibility |
| Reset Options | Front-panel switch or remote N.O. contact |
| Additional | Pulsing output present on SE-330 series |
Applications
Monitor NGR and detect ground faults in medium-voltage distribution substations, generator and transformer neutral grounding schemes, industrial power plants, mining and petrochemical facilities where reliable neutral-ground protection and IEC 61850 integration are required.
We supply genuine Littelfuse protective relays through authorized distribution channels. Based in Batam, Wulan Dari offers fast delivery across Indonesia and Southeast Asia and competitive commercial terms. Contact us to request a quotation or technical support for the SE-330-26-00.
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