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Littelfuse SE-330HV-03-00 NGR Monitor, High Voltage, Ethernet
$4,971$5,965 (-17%)
Littelfuse SE-330HV-03-00 NGR Monitor HV — neutral grounding resistor (NGR) monitor for high-voltage resistance-grounded AC systems with wide-range AC/DC supply and Ethernet/USB connectivity. Genuine Littelfuse product with fast delivery from Batam across Indonesia & Southeast Asia.
The Littelfuse SE-330HV-03-00 is a high-voltage Neutral Grounding Resistor (NGR) monitor / protection relay designed for continuous supervision of resistance-grounded AC systems. This conformally coated unit provides 2 Form A and 2 Form C programmable contacts, wide-range AC/DC supply and Ethernet/USB communications for local and remote monitoring. Ideal for NGR supervision in substations, HV motor control and utility distribution, it detects shorted or failed resistors and ground faults with adjustable sensitivity and timing for system coordination.
Key Features
- Continuous NGR and ground-fault monitoring with fast fault detection
- Detects shorted or open neutral grounding resistors and resistor failure within seconds
- Adjustable pickup 2–100% (1% steps) and adjustable time delay 0.1–10 s for coordination
- Two Form A (NO) and two Form C (changeover) programmable output contacts; selectable fail-safe or non-fail-safe modes
- Analog 4–20 mA output plus pulsing output option (SE-330 models); universal CT compatibility
- USB and Ethernet communications for configuration and remote diagnostics; conformal coating for harsh environments
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330HV-03-00 |
| Component | Neutral Grounding Resistor Monitor |
| Supply Voltage | Wide-range AC/DC (approx. 65–275 V) |
| Contacts | 2 Form A; 2 Form C (programmable) |
| Protection Functions | Continuous NGR monitoring, shorted NGR detection, ground-fault detection |
| Adjustable Pickup | 2–100% (1% increments) |
| Time Delay | 0.1–10 s |
| Outputs | Analog 4–20 mA; pulsing output (SE-330 only); programmable relay outputs |
| Communications | USB, Ethernet |
| CT Compatibility | Universal CT compatibility |
| Coating | Conformal coated for harsh environments |
Applications
Used for neutral grounding supervision in substations, HV motor and generator protection, utility distribution networks, and industrial plants (mining, petrochemical) where controlled grounding and fast detection of NGR faults are required.
We supply genuine Littelfuse products through authorized channels from our Batam base with fast delivery across Indonesia and Southeast Asia. Contact us for stock confirmation and request a quotation — competitive lead times and reliable technical support available.
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