DC Surge Protection Device

The DC Surge Protection Device (SPD) is engineered to safeguard DC electrical systems—such as photovoltaic (PV) arrays, battery storage, and DC power circuits—from damaging voltage spikes and transient surges. By rapidly diverting excess surge energy to the ground, it protects sensitive components and ensures reliable system operation and longevity.

Built for high-performance protection, this SPD features high discharge capacity, fast response time, and thermal disconnect mechanisms for enhanced safety. Its modular design allows for easy installation, maintenance, and replacement in both residential and industrial DC applications.

Key Features

• Rated Voltage: 500VDC / 600VDC / 1000VDC / 1500VDC (model dependent)

• High Surge Current Capacity: Up to 40kA

• Response Time: <25 ns

• Protection Mode: Common and differential modes

• Status Indicator: Visual window for protection status monitoring

• Modular, DIN-rail mount design for easy installation

• Thermal and short-circuit protection for added safety

• Compliance: IEC/EN 61643-31