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Littelfuse SE-330-08-01 NGR Monitor, Dual SC Fiber, IEC 61850, NC
$4,923$5,907 (-17%)
Littelfuse SE-330-08-01 Neutral Grounding Resistor (NGR) Monitor — universal supply 65–265 VAC / 85–275 VDC, IEC 61850 with dual SC fiber. Genuine Littelfuse device with fast delivery from Batam to Indonesia & Southeast Asia.
The Littelfuse SE-330-08-01 is a Neutral Grounding Resistor (NGR) Monitor / protection relay designed for resistance-grounded AC systems. With a universal supply of 65–265 VAC and 85–275 VDC and IEC 61850 communication over dual SC fiber, this SE-330 model provides continuous NGR monitoring, ground-fault detection and shorted-NGR supervision for substations, industrial power distribution and utility switchgear.
Key Features
- Continuous NGR monitoring to detect resistor degradation or failure.
- Shorted NGR and ground-fault detection to identify bypassed or excessive fault currents.
- Adjustable pickup sensitivity (2–100 %) in 1% steps for precise coordination.
- Adjustable trip/time delay (0.1–10 s) for selectivity and system coordination.
- Universal CT compatibility with programmable output contacts and selectable contact operating modes.
- Analog 4–20 mA output and pulsing output (SE-330 only); IEC 61850 communication via dual SC fiber.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330-08-01 |
| Component | Neutral Grounding Resistor Monitor |
| Supply Voltage | 65–265 V AC / 85–275 V DC (universal) |
| Adjustable Pickup | 2–100 % (1 % increments) |
| Time Delay | 0.1–10 s (adjustable) |
| Analog Output | 4–20 mA |
| Digital/Comm | IEC 61850 over dual SC fiber |
| CT Compatibility | Universal CT input |
| Outputs | Programmable output contacts; pulsing output (SE-330) |
Applications
Protection of neutral grounding resistors in medium-voltage distribution, ground-fault detection in utility substations, NGR supervision for industrial power plants and backup/main protection in switchgear and transformer neutral monitoring.
We supply genuine Littelfuse protection relays through authorized channels from our Batam base, with fast delivery across Indonesia and Southeast Asia. Contact us for availability and request a quotation — competitive lead times and local support for your project.
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