SecSun field box for 12/16/24 strings with monitoring.

The supervised photovoltaic string field frame is an advanced solution designed for the management, protection, and monitoring of medium and large-scale photovoltaic systems. Available in 12, 16, and 24-string configurations, it allows for complete control of the DC lines through the integration of protection and supervision systems.

On the DC side, the panel is equipped with 2P 16A – 1000VDC disconnector fuse holders for each string, providing overcurrent protection. There is also a 2P+earth 1000VDC surge arrester for voltage spike protection, along with a main disconnector of 160A or 250A (depending on the configuration) for system isolation.

The system integrates a string control unit with Modbus RS485 communication, allowing continuous monitoring of string status (current, any anomalies) via dedicated 24VDC inputs. This enables efficient management and rapid fault detection.

The panel is powered by 230VAC / 24VDC for the control circuit and is housed in a polyester enclosure with IP65 Class II protection rating, suitable for outdoor installations.

With dimensions of 1000 × 500 × 300 mm, it represents a robust, professional solution that can be easily integrated into large-scale photovoltaic systems. It is also available in a variant for voltages up to 1500VDC.

The product complies with standard CEI EN 61439-1/2.