Array Box - Junction Box with Monitoring for Photovoltaic Plant


GT 100 Inverter

A new Balance of System component from Schneider Electric

Put over 100 years of Schneider Electric’s experience as a global specialist in energy management to work on your solar project.

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Array Box is a junction box which allows several photovoltaic strings (from 8 to 32) to be connected in parallel. The total DC power is then distributed to the photovoltaic inverter. It includes photovoltaic string protection, overvoltage protection and a DC output switch disconnector. They are well adapted for Power plants as well as for photovoltaic large buildings

The Array Box also integrates a monitoring module and communicates through Modbus protocol with the monitoring devices (iRIO, XLRIO) located in the inverter substation. For each string of panels, Array Box realises DC current measurement (0 to 20A per string). The DC voltage (up to 1000Vdc) is also measured and abnormal behaviour or failure are detected.

Array Box can also propose safety opening control and remote control of the switch disconnector.

Standard Manufacturers Warranty: 18 months




Minimize Power Plant downtime
Array Box allows you to provide accurate global monitoring for the power plant thanks to DC voltage and photovoltaic string current measurement.
You are able to immediately locate a faulty string.

Ensure the security of the plant
• Array box provides all necessary elements which participate to ensure the security of the system and personnel
• Protection against short circuits and surges
• Isolation of DC link through an integrated switch disconnector
• Safety opening control


Opt for a preventive maintenance rather than a curative maintenance
• Thanks to the Array box monitoring system, the global photovoltaic monitoring solution is able to show you the internal status of each Array box.
• Not only does it provide information for automatic detection of faulty strings but it also gives auxilliary indications such as the internal temperature, lightning protection end-of-life status or the state of the switch disconnector.

Reduce your on-the-field operation time
• Thanks to the array box monitoring, when commissioning, you can check the strings connection and the status of each Array box from the inverter substation or the grid connection substation or even from a remote control room.
• Then, at any time, it is also possible to have remote control of the switch disconnector integrated in each Array box

Easy adaptation to your plant
Depending on the topology of your power plant, you can connect different meteorological sensors to any of the array boxes.  This information is necessary for the monitoring solution to calculate theoretical energy production such as:
• Ambient temperature
• Temperature of solar panels
• Irradiation
• Wind direction and velocity


Photovoltaic power plant or large building monitoring.