3P 800V DC Surge Protective Device (SPD)

Our 3P 800V DC SPD is engineered to intercept and discharge transient overvoltages in high-voltage DC systems, such as those found in solar PV arrays and energy storage units. Built with advanced chip technology, it delivers strong surge current handling and precise voltage clamping, limiting residual voltage (Up) to ≤1.25kV to protect downstream DC equipment.

Available in a 3-pole configuration, this SPD is compatible with 800V DC systems and features a DIN-rail mount design for quick installation in combiner boxes and distribution cabinets. Its low power consumption design minimizes energy loss during normal operation, while the built-in status indicator provides real-time monitoring of the SPD’s operational health. As a key component of DC system lightning protection, it acts as a critical defense layer, effectively mitigating surge energy and ensuring the reliability and safety of renewable energy and energy storage systems.

Key Features

· High-Voltage DC Compatibility: Optimized for 800V DC systems, with a maximum continuous operating voltage (Uc) of 800V DC.

· Strong Surge Capacity: Nominal discharge current (In) of 30kA and maximum surge current (Imax) of 60kA, capable of withstanding repeated lightning and surge events.

· Precise Voltage Clamping: Limits residual voltage (Up) to ≤1.25kV, effectively protecting sensitive DC power equipment from overvoltage damage.

· Low Power Consumption: Energy-efficient design with minimal standby power loss, ideal for renewable energy systems.

· Intelligent Protection: Fast response to transient surges, with stable performance and no impact on normal system operation.

· DIN-Rail Mounting: Compact, modular housing for easy installation in PV combiner boxes and DC distribution cabinets.

· Status Indication: Built-in visual indicator to monitor operational status and facilitate timely maintenance.

· Photovoltaic (PV) Systems: Installed in PV combiner boxes and inverter systems to protect solar panels and DC power distribution equipment.

· Energy Storage Systems (ESS): Safeguards battery energy storage systems and DC busbars from surge damage.

· DC Power Distribution: Protects high-voltage DC distribution systems in industrial and commercial settings.

· EV Charging Infrastructure: Shields DC fast-charging stations and related power electronics.

· Industrial DC Applications: Applied in industrial DC power systems, such as electrolysis and electroplating equipment.

· Renewable Energy Projects: Complements wind and solar power systems to ensure stable operation of DC-side components.