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Littelfuse SE-330HV-27-01 NGR Monitor, 48VDC, IEC 61850, NC
$5,222$6,266 (-17%)
Littelfuse SE-330HV-27-01 Neutral Grounding Resistor (NGR) Monitor — high-voltage NGR monitor with 48 VDC supply capability (also supports 28–52 VAC / 36–72 VDC), adjustable ground-fault pickup and IEC 61850. Genuine Littelfuse product with fast delivery from Batam across Indonesia & Southeast Asia.
The Littelfuse SE-330HV-27-01 is a high-voltage Neutral Grounding Resistor (NGR) Monitor designed for protection relay applications. This SE-330 series device supports 28–52 VAC and 36–72 VDC supplies (48 VDC typical), provides continuous NGR and ground-fault monitoring, adjustable pickup and timing, and IEC 61850 communications — ideal where reliable neutral grounding protection is required in substations, generator sets and industrial power systems.
Key Features
- Continuous monitoring of NGR condition with shorted-NGR detection
- Adjustable ground-fault pickup from 2–100% of CT primary rating
- Configurable trip timing (adjustable delay 0.1–10 s) for coordination
- Programmable output contacts: 1 Form A, 1 Form B or 2 Form C
- Analog 4–20 mA output and pulsing output option (SE-330 family)
- Modern communications: USB, IEC 61850, SC fiber and RJ45 interfaces
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330HV-27-01 |
| Component | Neutral Grounding Resistor Monitor (NGR Monitor) |
| Supply Voltage | 28–52 VAC; 36–72 VDC (48 VDC typical) |
| Output Contacts | 1 Form A, 1 Form B or 2 Form C (programmable) |
| Analog Output | 4–20 mA |
| Adjustable Pickup | 2–100% of CT primary rating (1% increments) |
| Adjustable Time Delay | 0.1–10 s |
| RF Trip Levels | 100–10,000 V (systems ≤35 kV); 200–20,000 V (systems up to 72 kV) |
| Communications | USB, IEC 61850, SC fiber, RJ45 |
| IEEE Device Numbers | 50G–86 |
| Reset Options | Front-panel switch or remote N.O. contact |
Applications
Neutral-grounding monitoring for utility substations, transformer and switchgear protection in industrial plants, generator and UPS neutral monitoring, and distribution systems requiring fast ground-fault detection and coordination.
We supply genuine Littelfuse protection products through authorized channels from our base in Batam, with fast delivery across Indonesia and Southeast Asia. Contact us for stock confirmation and request a quotation — competitive lead times and support for project orders.
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