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Littelfuse SE-330-07-00 NGR Monitor, SC Fiber & RJ45, IEC 61850
$4,923$5,907 (-17%)
Littelfuse SE-330-07-00 neutral grounding resistor (NGR) monitor with universal 65–265 VAC / 85–275 VDC supply, 2–100% adjustable pickup and IEC 61850/USB communications. Genuine Littelfuse unit — fast delivery from Batam across Indonesia and Southeast Asia.
The Littelfuse SE-330-07-00 is a conformally coated neutral grounding resistor (NGR) monitor / protection relay designed for resistance-grounded AC systems. This SE-330-series device (SE-330-07-00) supports universal supply voltages (65–265 VAC, 85–275 VDC), adjustable ground-fault pickup from 2–100% of CT primary and a 12 s trip time. Ideal as a neutral grounding relay or protection relay for medium-voltage distribution, generators, industrial plants and utility switchgear with IEC 61850 communication options.
Key Features
- Conformal coating for harsh industrial environments and pollution resistance.
- 2 Form A (N.O.) and 2 Form C (changeover) programmable output contacts.
- Universal supply: 65–265 VAC and 85–275 VDC; front-panel or remote N.O. contact reset.
- Adjustable pickup 2–100% (1% steps) and adjustable time delay (0.1–10 s) for coordination.
- Communications: USB and IEC 61850; analog 4–20 mA output and pulsing output (SE-330 only).
- Detects shorted NGR, resistor failure and ground faults that bypass the resistor; harmonic filtering and latching or autoreset options.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330-07-00 |
| Component | Neutral Grounding Resistor Monitor (NGR monitor / protection relay) |
| Contacts | 2 Form A (N.O.) + 2 Form C |
| Supply Voltage | 65–265 VAC; 85–275 VDC (universal) |
| Ground-fault pickup | Adjustable 2–100% of CT primary (1% increments) |
| Time delay / Trip time | Adjustable 0.1–10 s; trip time indicated 12 s |
| RF trip levels | 20–2000 V (systems ≤5 kV); 100–10000 V (systems >5 kV) |
| Analog output | 4–20 mA |
| Communications | USB, IEC 61850 |
| Features | Conformal coating, harmonic filtering, latching or autoreset, pulsing output (SE-330) |
Applications
Use SE-330-07-00 for continuous NGR monitoring in medium-voltage distribution, generator neutral protection, industrial plant and utility switchgear, and as backup sensing for transformer neutral resistor systems.
We supply genuine Littelfuse protection relays via authorized channels. Based in Batam, we ship quickly across Indonesia and Southeast Asia with competitive lead times. Contact us to request a formal quotation or for technical sales assistance on SE-330-07-00.
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