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Littelfuse SE-330-26-01 NGR Monitor, 48VDC, Dual RJ45, IEC 61850, NC
$5,171$6,205 (-17%)
Littelfuse SE-330-26-01 Neutral Grounding Resistor (NGR) Monitor — wide DC supply (28–72 VDC, typical 48 VDC) with IEC 61850 and dual RJ45. Genuine Littelfuse protection relay, available from Batam with fast delivery across Indonesia and Southeast Asia.
The Littelfuse SE-330-26-01 is a neutral grounding resistor (NGR) monitor / protection relay designed for resistance-grounded AC systems. With a wide DC supply range (covers 28–72 VDC, 48 VDC typical) and IEC 61850 communications, it provides ground-fault and NGR health monitoring for substations, distribution feeders and industrial motor systems. Ideal where precise neutral monitoring, fast alarm/trip signaling and IEC-compliant communications are required.
Key Features
- Continuous NGR monitoring with fast detection of resistor faults and shorted NGR.
- Ground-fault detection with adjustable pickup from 2–100% (settable in 1% steps).
- Adjustable trip/time delay (0.1–10 s) and selectable operating modes (latching or autoreset).
- IEC 61850 and USB communications plus dual RJ45 ports for modern SCADA integration.
- Analog 4–20 mA output and pulsing output option; programmable output contacts for alarm/trip.
- Universal CT compatibility, front-panel or remote N.O. contact reset and built‑in harmonic filtering.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330-26-01 |
| Component | Neutral Grounding Resistor Monitor (NGR monitor) |
| Supply Voltage | 28–72 VDC (covers 48 VDC typical) |
| Communication | USB, IEC 61850; Dual RJ45 ports |
| Outputs | Programmable contacts; Analog 4–20 mA; Pulsing output (SE-330) |
| Pickup Range | Adjustable 2–100% (1% increments) |
| Time Delay | Adjustable 0.1–10 s |
| CT Compatibility | Universal CT compatibility |
| Detection | Continuous NGR monitoring, shorted NGR and ground-fault detection |
| Reset | Front-panel switch or remote N.O. contact |
Applications
Used for neutral-ground monitoring on medium-voltage distribution feeders, substation NGR protection, generator neutral supervision and industrial power distribution systems. Suited for utilities, manufacturing plants and critical infrastructure where IEC 61850 communications and fast NGR fault detection are required.
We supply genuine Littelfuse protection relays through authorized distribution channels. Based in Batam, Indonesia, we ship quickly across Indonesia and Southeast Asia with competitive lead times. Contact us to request a quotation or confirm availability for the SE-330-26-01.
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