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Littelfuse SE-330HV-01-01 NGR Monitor, High Voltage, DeviceNet, NC
$4,971$5,965 (-17%)
Littelfuse SE-330HV-01-01 Neutral Grounding Resistor (NGR) monitor — wide supply (AC 65–265V / DC 85–275V) for high-voltage systems with DeviceNet/USB. Genuine Littelfuse product from Batam with fast delivery across Indonesia and Southeast Asia.
Littelfuse SE-330HV-01-01 is a conformally coated Neutral Grounding Resistor (NGR) monitor engineered for high-voltage AC systems. With wide supply voltage support (AC 65–265 V, DC 85–275 V) and programmable pickup/delay, it continuously monitors NGR condition, detects shorted resistors and ground faults, and supports RF trip thresholds for systems up to 35 kV (with extended thresholds for 72 kV systems). DeviceNet and USB options simplify integration into protection, SCADA and automation networks for substations, power plants and industrial HV installations.
Key Features
- Continuous NGR monitoring with shorted-resistor and ground-fault detection.
- Adjustable pickup (2–100 %) and time delay (0.1–10 s) for coordination.
- Wide supply range: AC 65–265 V and DC 85–275 V for flexible powering.
- Analog 4–20 mA output plus pulsing output option on SE-330 models.
- DeviceNet and USB communications for easy integration into control systems.
- Conformal coating and selectable fail-safe / non-fail-safe modes with front-panel or remote reset.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330HV-01-01 |
| Component | Neutral Grounding Resistor Monitor (NGR Monitor) |
| Supply Voltage | AC 65–265 V; DC 85–275 V |
| Adjustable Pickup | 2–100 % |
| Adjustable Time Delay | 0.1–10 s |
| Analog Output | 4–20 mA |
| RF Trip Levels | 100–10,000 V (systems up to 35 kV); 200–20,000 V (72 kV systems) |
| Communications | DeviceNet, USB |
| Coating / Protection | Conformal coated |
| Operating Modes / Reset | Fail-safe or non-fail-safe; reset via front-panel switch or remote N.O. contact |
Applications
Designed for neutral grounding resistor monitoring in distribution substations, generator/transformer neutrals, industrial HV installations (mining, petrochemical), and renewable energy substations where reliable ground-fault detection and NGR supervision are required.
We supply genuine Littelfuse protection relays via authorized channels from our Batam base, with fast delivery across Indonesia and Southeast Asia. Contact us for competitive lead times and request a quotation today to secure stock and integration support.
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