DC Surge Arrestor SPD 3U1-40 2+1N/PE (3P) 20–40kA 1000V/DC

The DC Surge Arrestor SPD 3U1-40 2+1N/PE (3P) 20–40kA 1000V/DC is a high-performance surge protection device designed to safeguard photovoltaic (PV) and DC power systems from lightning-induced surges and transient overvoltage events. Engineered for 1000V DC applications, it provides reliable protection for solar panels, inverters, combiner boxes, battery systems, and other sensitive DC equipment.

Featuring a 3-pole (2+1N/PE) configuration, this surge protection device delivers efficient discharge performance with a nominal discharge current of 20kA and maximum discharge capacity of 40kA, helping maintain system stability and reduce the risk of equipment damage. Designed for long-term reliability, the unit supports fast response protection and easy integration into modern solar installations. Type 2 DC SPDs in this class are commonly designed for photovoltaic protection and operate with 20kA nominal / 40kA maximum discharge capability at 1000V DC.

Key Features

• High Surge Protection Capacity – Nominal discharge current of 20kA with maximum surge capacity up to 40kA for effective transient protection.
• 1000V DC System Compatibility – Designed for solar PV and high-voltage DC electrical networks.
• Fast Response Performance – Rapid surge response supports improved equipment protection during voltage spikes.
• 3-Pole 2+1N/PE Configuration – Supports stable and secure DC surge protection architecture.
• DIN Rail Installation – Compact design enables easy installation into electrical distribution panels.
• Built for Solar Applications – Suitable for protecting solar inverters, combiner boxes, battery systems, and DC distribution equipment.

Applications

• Solar photovoltaic (PV) systems
• DC combiner boxes
• Solar inverters
• Battery energy storage systems (BESS)
• Industrial DC distribution panels
• Renewable energy installations