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Littelfuse SE-330-27-01 NGR Monitor, 48VDC, SC Fiber/RJ45, IEC 61850, NC
$5,171$6,205 (-17%)
Littelfuse SE-330-27-01 Neutral Grounding Resistor (NGR) Monitor — 36–72 VDC (48 VDC option) with IEC 61850/USB communications. Genuine Littelfuse product from Batam supplier, fast delivery across Indonesia & Southeast Asia. Request a quote today.
The Littelfuse SE-330-27-01 is a Neutral Grounding Resistor (NGR) monitor / protection relay designed for resistance-grounded AC systems. This SE-330 series unit accepts 28–52 VAC or 36–72 VDC supplies (48 VDC option), provides continuous NGR and ground-fault detection, and supports IEC 61850 communications for substation integration and protection relay applications.
Key Features
- Continuous NGR monitoring with shorted-resistor detection to protect against unexpected neutral bypass faults.
- Ground-fault detection and IEEE-style functions (50G, 50N, 51G, 51N, 59N, 86) for coordinated protection.
- Adjustable pickup (2–100%) and configurable time delay (0.1–10 s) for flexible coordination.
- Multiple communications: IEC 61850, USB and SC fiber / RJ45 options for remote integration and SCADA.
- Programmable relay outputs, analog 4–20 mA output and pulsing output for alarm/telemetry use.
- Selectable contact operating modes, front-panel or remote reset, and conformal coating for harsh environments.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330-27-01 |
| Component | Neutral Grounding Resistor Monitor |
| Supply Voltage | 28–52 VAC / 36–72 VDC (48 VDC option) |
| Frequency | 50 / 60 Hz |
| Communications | IEC 61850, USB, SC fiber / RJ45 |
| Functions (IEEE) | 50G, 50N, 51G, 51N, 59N, 86 |
| Outputs | Programmable relay contacts, analog 4–20 mA, pulsing output |
| Adjustable Settings | Pickup 2–100%; Time delay 0.1–10 s |
| Reset Options | Front-panel or remote; auto/manual reset |
| CT Compatibility | Universal CT compatibility |
| Coating | Conformal coated |
Applications
Designed for neutral-grounded networks in utility substations, industrial power distribution, petrochemical and mining sites. Typical uses include NGR supervision, neutral-ground fault detection, backup protection for distribution transformers, and integration into IEC 61850 substation automation systems.
We supply genuine Littelfuse protection devices through authorized distribution channels. Based in Batam, we deliver quickly across Indonesia and Southeast Asia with competitive pricing and local support. Contact us to request a quotation or technical details for the SE-330-27-01.
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