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Littelfuse SE-330HV-07-00 NGR Monitor Universal SC Fiber & RJ45 61850
$4,971$5,965 (-17%)
Littelfuse SE-330HV-07-00 neutral grounding resistor (NGR) monitor, universal supply (AC 65–265 V; DC 85–275 V), conformal-coated with IEC 61850 / SC‑fiber & RJ45 communications. Genuine Littelfuse — fast delivery from Batam across Indonesia & Southeast Asia.
The Littelfuse SE-330HV-07-00 is a conformally coated Neutral Grounding Resistor (NGR) monitor designed for resistance-grounded AC systems. This protection relay provides continuous NGR monitoring, shorted-NGR detection and ground-fault detection with adjustable pickup (2–100%) and time delay (0.1–10 s). With universal CT compatibility and IEC 61850 / SC fiber and RJ45 communications, it is ideal for substation protection, utility networks and industrial motor/control systems requiring reliable ground-fault protection and NGR supervision.
Key Features
- Continuous NGR monitoring with shorted-resistor detection to reduce transient overvoltage risk.
- Adjustable pickup 2–100% and adjustable trip delay 0.1–10 s for coordination.
- Universal supply range (AC 65–265 V; DC 85–275 V) and conformal coating for harsh environments.
- Multiple programmable outputs: relay contacts, analog 4–20 mA and SE-330 pulsing output.
- Selectable fail-safe / non-fail-safe modes and front-panel or remote N.O. contact reset.
- Communications options including SC fiber, RJ45 and IEC 61850 for modern SCADA/substation integration.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330HV-07-00 |
| Component | Neutral Grounding Resistor Monitor |
| Coating | Conformal coated |
| Supply Voltage | AC 65–265 V; DC 85–275 V |
| Adjustable Pickup | 2–100% |
| Adjustable Time Delay | 0.1–10 s |
| Outputs | Programmable relay contacts; analog 4–20 mA; pulsing output (SE-330) |
| Reset | Front-panel switch / remote N.O. contact |
| CT Compatibility | Universal CT compatibility |
| Communications | SC fiber, RJ45, IEC 61850 |
| Modes | Fail-safe / non-fail-safe selectable; standard harmonic filtering |
Applications
Monitor and protect neutral grounding resistors in utility substations, industrial distribution systems, generator neutrals and mining/petrochemical plants. Use for ground-fault detection, NGR health supervision and integration with IEC 61850 substation automation.
We supply genuine Littelfuse protection relays through authorized distribution. Based in Batam, Wulan Dari delivers across Indonesia and Southeast Asia with fast logistics and competitive pricing. Contact us to request a quotation or confirm stock and delivery lead time.
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