DIN-Rail DC Current Sensors optimize PV energy production.

Press Release Summary:

Designed to help identify defective or damaged PV modules, Model 789-620 measures DC currents from 0-80 Adc, while Model 789-621 measures 0-140 Adc. Equipped with dual RJ-45 interfaces, sensors transmit data via RS-485 serial communication lines up to 4,000 ft with accuracy of 0.5%. Feedthrough configuration eliminates need to terminate conductors. Operating in temperatures from -20 to +70°C, both models are addressable via on-unit DIP switch and include operational status LED.

Original Press Release:

WAGO DIN-Rail DC Current Sensors

GERMANTOWN, WI - WAGO Corporation's new Feedthrough Current Sensors continuously measure DC currents to optimize photovoltaic (PV) energy production. Via serial connection, the 789-620 (0-80A DC) and 789-621 (0-140A DC) sensors transmit data with an accuracy of 0.5% (full scale value). This can be used to quickly identify defective or damaged PV modules, bolstering performance and reliability.

Equipped with dual RJ-45 interfaces, the sensors transmit data via RS-485 serial communication lines up to 4000 feet. Thirty-two Current Sensors can reside on one line for connection to the WAGO-I/O-SYSTEM or PC as a MODBUS Slave. The 789 Series feedthrough configuration eliminates the need to terminate conductors, simplifying commissioning. Both models are addressable via on-unit DIP switch and feature an operational status LED. Engineered for harsh environments, the sensors operate in temperatures of -20°C to +70°C.


The 789 Series Sensors join WAGO's solar portfolio, which includes solar tracking for PV and concentrated solar applications via WAGO-I/O-SYSTEM. 828 Series lever-operated, feedthrough terminal blocks serve solar inverters.

WAGO solar applications include 758 Series IPCs managing solar energy for Tûranor PlanetSolar. The catamaran is attempting to be the first solar-powered global circumnavigation via vessel: http://www.planetsolar.org/

WAGO is the leader in spring pressure connection technology that eliminates loose wires resulting from vibration and temperature cycling, while providing highly reliable, corrosion-resistant and maintenance-free connections. Products: DIN-rail, PCB and chassis mount terminal blocks; signal conditioners; the WAGO-I/O-SYSTEM and more.

For additional information, visit www.wago.us. Contact WAGO at 1-800-DIN-RAIL or info.us@wago.com.

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