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Littelfuse SE-330-07-01 NGR Monitor, SC Fiber & RJ45, IEC 61850, NC
$4,923$5,907 (-17%)
Littelfuse SE-330-07-01 neutral grounding resistor (NGR) monitor with universal AC/DC supply and adjustable pickup (2–100%). Genuine Littelfuse protection relay, supplied via authorized channels from Batam with fast delivery across Indonesia and Southeast Asia.
The Littelfuse SE-330-07-01 is a Neutral Grounding Resistor (NGR) monitor relay designed for resistance‑grounded AC system protection. This SE‑330 series protection relay supports selectable contact operating modes and wide supply options for AC and DC systems, providing continuous NGR monitoring, shorted‑resistor detection and ground‑fault indication. It is ideal for substation protection, distribution networks and industrial motor control where reliable NGR and protection relay functionality (IEC/utility applications) is required.
Key Features
- Continuous NGR monitoring with fast detection of resistor faults and shorted NGR conditions.
- Selectable contact configurations (1 Form A, 1 Form B, 2 Form C) with fail‑safe or non fail‑safe operation.
- Adjustable sensitivity (pickup 2–100 %) and programmable time delay (0.1–10 s) for coordination.
- Universal CT compatibility plus programmable output contacts, including analog 4–20 mA and pulsing output.
- Flexible communications: fiber and RJ45 interfaces and support for IEC 61850 protocols.
- Auto or manual reset options and selectable contact operating modes to match protection schemes.
Technical Specifications
| Manufacturer | Littelfuse |
|---|---|
| Commercial Reference | SE-330-07-01 |
| Product | Neutral Grounding Resistor Monitor (NGR monitor) |
| Supply Voltage | 65–265 V (AC); 85–275 VDC |
| Contact Configurations | 1 Form A; 1 Form B; 2 Form C |
| Operating Modes | Fail‑safe / Non fail‑safe; selectable contact operating mode |
| Pickup (Sensitivity) | Adjustable 2–100 % |
| Time Delay | Adjustable 0.1–10 s |
| Outputs | Programmable contacts; analog 4–20 mA; pulsing output (SE‑330) |
| Communications | Fiber, RJ45, IEC 61850 |
| CT Compatibility | Universal CT compatibility |
| Reset | Auto / Manual |
| Application | Resistance‑grounded AC system protection, NGR monitoring |
Applications
Used for neutral grounding resistor monitoring in substations, distribution feeders and industrial power systems; protection and alarm for NGRs in generator and transformer neutrals; integration into SCADA/IEC 61850 protection schemes.
We supply genuine Littelfuse SE‑330-07-01 units through authorized channels from our Batam base. Fast delivery across Indonesia and Southeast Asia, competitive pricing, and local support available—contact us to request a quotation or technical assistance today.
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