This guide describes the RENLE RNU1 series surge protection devices, covering their strong protection functions, full‑scale surge handling, remote‑control capability, and easy maintenance. It outlines the product’s compact size, standard mounting dimensions, and visual alarm indicators for normal and fault conditions.
Technical data such as rated voltage, surge current capacity, discharge current, response time, and environmental limits are listed, along with wiring and connection details for single‑phase and three‑phase installations. The manual also explains the different protection grades (B, C, D) and suitable application scenarios for each model variant.
| Rated voltage | 220/380 V |
|---|---|
| Working temperature range | -40 °C to +85 °C |
| Relative humidity | <95 % (25 °C) |
The device uses a standard size, small volume design and can be mounted on an installation rail; wiring details are provided for single‑phase and three‑phase systems.
It operates from –40 °C to +85 °C with relative humidity below 95 % at 25 °C.
Yes, the RNU1 series includes a remote‑control function with alarm display and voice alarm capability.