Modular voltage indicator - 3 phase WNC-3

Three-phase installation voltage monitoring

The WNC-3 voltage indicator is a precise and reliable measuring instrument designed to monitor voltage in three-phase networks. The device displays voltage values on a clear, 3-digit LED display, making it easy to quickly identify potential power supply problems. Thanks to its compact size (1 module – 18 mm), the indicator is easy to mount on a standard 35 mm DIN rail in a distribution box.

Functionality and application

The WNC-3 consists of three independent measurement channels, allowing for accurate measurement and indication of the voltage value in each phase. The measured voltage is also used to power the indicator, eliminating the need for an additional power source. If the voltage drops below 80V, the display may turn off – this is a safety feature to prevent incorrect readings. The device finds application in both industrial, commercial and domestic installations where stable power supply control is required. It is particularly useful for monitoring the operation of motors, machines and other devices sensitive to voltage fluctuations.

Technical characteristics and mounting

The WNC-3 indicator is characterized by high measurement accuracy (±1% ± 1 digit) and a wide measurement range (80÷500 V AC). The connection is made using screw terminals 1.5 mm², and the tightening torque is 0.4 Nm. Mounting is done by snapping onto a 35 mm DIN rail. Remember to protect each phase with fuse links (0.25 A) or an installation circuit breaker (1 A B characteristic). The device meets safety standards and is designed to operate at temperatures from -5°C to 40°C. Thanks to its design and functionality, the WNC-3 is a reliable tool for electricians, engineers and all those responsible for the correct operation of electrical installations.