No products in the cart.
Roll over image to zoom in
Littelfuse SE-330HV-26-01 NGR Monitor, 48VDC, Dual RJ45, IEC 61850, NC
$5,222$6,266 (-17%)
Littelfuse SE-330HV-26-01 Neutral Grounding Resistor (NGR) Monitor — high-voltage protection relay with wide DC supply (nom. 48 VDC). Conformally coated, supports dual RJ45/IEC 61850 communications. Genuine Littelfuse product with fast delivery across Indonesia & Southeast Asia.
The Littelfuse SE-330HV-26-01 is a Neutral Grounding Resistor (NGR) monitor designed for resistance-grounded AC systems. This protection relay accepts a wide DC supply range (nominal 48 VDC) and continuously monitors the NGR for shorted resistors and ground faults. Ideal for substation and distribution network protection, the SE-330HV delivers precise pickup and timing adjustments for coordinated fault detection in industrial and utility motor control and transformer neutral applications.
Key Features
- Continuous NGR monitoring with detection of shorted resistor conditions and neutral ground faults.
- Wide DC supply support (typical 48 VDC) and dual RJ45 ports with IEC 61850 communications for modern protection systems.
- Adjustable pickup (2–100% in 1% steps) and adjustable trip delay (0.1–10 s) for coordination and sensitivity tuning.
- Analog 4–20 mA output plus programmable relay contacts and pulsing output option (SE-330 models) for integration with SCADA/RTU.
- Universal CT compatibility and selectable operating modes (fail-safe/non-fail-safe) with front-panel or remote reset options.
- Conformal coating for reliable operation in harsh substation and industrial environments.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330HV-26-01 |
| Component | Neutral Grounding Resistor Monitor |
| Supply Voltage | Wide DC range (nominal 48 VDC; 28–72 VDC supported) |
| Communication | Dual RJ45, IEC 61850 |
| Coating | Conformal coated |
| Functions | Continuous NGR monitoring; shorted NGR detection; ground-fault detection |
| Adjustable Pickup | 2–100% (1% increments) |
| Time Delay | 0.1–10 s |
| Analog Output | 4–20 mA |
| Outputs | Programmable relay contacts; pulsing output option |
| CT Compatibility | Universal |
| Reset Options | Front-panel or remote |
Applications
Use the SE-330HV for neutral-ground monitoring in substations and distribution feeders, transformer and generator neutral protection, industrial plant power distribution, and any resistance-grounded system requiring fast, coordinated ground-fault detection.
We supply genuine Littelfuse protection relays 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 local support available.
Reviews
There are no reviews yet.