Three-phase voltage indicator 3x400V+ N with voltage indication release WN-723S

Three-phase installation voltage monitoring

WN-723S is a three-phase voltage indicator designed to monitor 3x400V+N networks. The device is particularly useful in installations where quick and easy reading of phase voltage values is important. The indicator features a trigger indication function – the LCD display only activates on demand, which translates to energy savings and extends the device's lifespan. This solution is especially appreciated by installers during system configuration and diagnostics, as well as by end-users who value the discreet look of the installation.

Functionality and operation

The WN-723S indicator offers two operating modes: bar graph and single LED. The mode selection is done by shorting the appropriate leads. In bar graph mode, the indicator displays the voltage value using a series of LEDs, while in single LED mode, it signals over or under voltage by changing the LED color (green – correct value, red – value out of range). After activation (touching the front of the device), the display shows the voltage value for 10 seconds, after which it automatically turns off. This method of operation minimizes power consumption and ensures a readable display only when needed.

Installation and technical parameters

The WN-723S indicator is mounted on a standard 35 mm rail and occupies 2 modules (70 mm width). Connection to the installation is made using screw terminals with a cross-section of 4.0 mm², which ensures a stable connection and safe use. The device operates in a wide temperature range (-25 ÷ 50 °C) and has a protection class of IP20, which means protection against touching with fingers and solid objects larger than 12.5 mm. The measurement error does not exceed 2%, which guarantees the accuracy of readings. The device's power consumption is limited to ≤ 1 W, which further emphasizes its energy-saving character.