DC 1000V SPD

The DC 1000V SPD (Surge Protection Device) is a critical protection component used in the DC side of solar photovoltaic (PV) systems, especially in medium to large-scale installations. It is designed to protect solar equipment from high-voltage transients and surge currents caused by lightning strikes, grid disturbances, and switching events in DC circuits.

It is a DIN rail-mounted device designed for installation in DC combiner boxes, solar distribution boards, and inverter input panels.The most critical use is protecting string inverters or central inverters from high voltage surges that can enter through PV strings.

The DC 1000V SPD is a high-performance protection device tailored for modern solar systems. It ensures safety, system integrity, and operational continuity by suppressing dangerous surges before they reach sensitive components like inverters or controllers.

The risk of transient overvoltages from lightning strikes, switching operations, or faulty grid interactions has also increased. Our DC 1000V SPD is designed to act as the first line of defense, safeguarding critical DC-side components such as solar modules, string cables, combiner boxes, and inverters.

Key Features of DC 1000V SPD

High Voltage Rating

Built to protect PV systems with operating voltages up to 1000V DC, common in commercial & utility-scale projects.

Surge Discharge Capacity

Absorbs high energy surges from lightning strikes or grid faults, preventing equipment failure.

Fast Response Time

Reacts instantly to transient voltages, ensuring sensitive components

Low Clamping Voltage

Limits surge voltage to safe levels (typically <1.5kV), protecting connected equipment.

Compact & Modular Design

Space-saving form factor ideal for solar enclosures with limited room.

Replaceable Cartridge

Some models include plug-in, replaceable modules for quick maintenance without rewiring.

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