The three-phase voltage relay RNP-311M has found wide application both in industry and in household settings. The most common application of this relay is in automatic transfer switch (ATS) panels.

For example, RNP-311M is used by “ARBELON” in their ATS panels.

And this is how “Galichenergo” assembles their ATS panels

And here’s how “BUTON” assembles their ATS panels

The RNP-311M is also used in control and protection panels for conveyor belts, motors, and generally in production settings.

And this is how RNP-311M is used in household settings for protecting three-phase devices.