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Littelfuse SE-330HV-07-01 NGR Monitor Universal SC Fiber RJ45 61850 NC
$4,971$5,965 (-17%)
Littelfuse SE-330HV-07-01 Neutral Grounding Resistor (NGR) Monitor — universal supply 65–265 V AC / 85–275 V DC with adjustable ground-fault pickup (2–100% CT). Genuine Littelfuse device, available from Batam with fast delivery across Indonesia and Southeast Asia.
The Littelfuse SE-330HV-07-01 is a neutral grounding resistor (NGR) monitor and protection relay designed for resistance-grounded AC systems. With universal supply capability (65–265 V AC / 85–275 V DC), adjustable ground-fault pickup from 2–100% of CT primary and programmable trip delay, it provides continuous NGR monitoring, shorted-NGR detection and ground-fault protection. Ideal for substations, industrial distribution, generator sets and any application requiring IEC 61850-capable protection relays for neutral supervision.
Key Features
- Continuous monitoring of neutral grounding resistor and fast detection of resistor faults
- Detects shorted NGR and ground faults with adjustable pickup from 2–100% of CT primary
- Adjustable trip/time delay (0.1–10 s) and selectable contact operating modes (latch or autoreset)
- Universal supply: wide AC/DC input range and conformal coating for harsh environments
- Comms options including IEC 61850, RJ45, fiber connectivity and USB for local configuration
- Analog 4–20 mA output, programmable output contacts and pulsing output option on SE-330 family
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330HV-07-01 |
| Component | Neutral Grounding Resistor Monitor |
| Supply Voltage | 65–265 V AC; 85–275 V DC |
| Ground-fault Pickup | Adjustable 2–100% of CT primary |
| Trip Time Delay | Adjustable 0.1–10 s |
| Analog Output | 4–20 mA |
| Communications | IEC 61850, RJ45, Fiber, USB |
| Features | Continuous NGR monitoring, shorted NGR detection, selectable reset modes, conformal coating |
Applications
Used to monitor and protect neutral grounding resistors in utility substations, industrial distribution systems, generator installations and process plants with resistance-grounded systems. Also fits as primary or backup ground-fault supervision in transformers and switchgear.
We supply genuine Littelfuse SE-330HV-07-01 units via authorized distribution channels from our Batam base. Fast delivery across Indonesia and Southeast Asia, competitive pricing and local support. Contact us to request a formal quotation or technical assistance.
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