Surge arrester type T1+T2, 3-pole, 1000 V DC, Iimp: 9kA (10/350), Imax: 50kA, In: 20kA (8/20) RSP-T1T2-DC 6.25/3P 2617145

DC Installation Protection – Reliability and Safety

This three-pole surge protector of the RSP-T1T2-DC series is designed to protect direct current (DC) installations from the effects of lightning strikes and overvoltages. It is a key element ensuring the safety of devices and installations, especially in photovoltaic systems, where voltage stability is critical. The construction based on MOV varistors guarantees a quick response and effective suppression of disturbances.

Functionality and Application

This surge protector combines the features of T1 and T2 protection, which means it provides protection against both direct lightning strikes (T1) and overvoltages resulting from induced disturbances (T2). This makes it a comprehensive solution for protecting DC installations. It is ideal for use in the main distribution board, where it is mounted to protect the entire installation. Protection methods (+)-PE, (-)-PE, (+)-(-) provide flexibility in system configuration.

Key Parameters and Benefits

• High efficiency: Peak surge current Iimp at 9kA (10/350 µs) and maximum discharge current Imax 50kA guarantee effective protection even with strong overvoltages.
• Operating voltage: Maximum continuous operating voltage Uc 1000V DC makes it an ideal solution for photovoltaic installations with high voltage.
• Rated discharge current: In 20kA (8/20 µs) provides resistance to frequent but less intense overvoltages.
• Fast response: Response time below 100 ns minimizes the risk of damage to connected devices.
• Mounting: Modular design allows for easy mounting on a 35 mm DIN rail.
• Safety: Equipped with thermal disconnectors and failure indicators, which facilitate diagnostics and maintenance.
• Versatility: Suitable for use in TT-, TN-S and TN-C-S systems.

The maximum continuous operating voltage is 1000 V DC, the rated discharge current (8/20 μs) is 20 kA, and the maximum discharge current (8/20 μs) reaches 50 kA. The peak surge current (10/350 μs) is 9 kA, and the protection level Up is 4.5 kV. For connection, you can use conductors with a cross-section of up to 35 mm² (solid core) or 50 mm² (stranded).

This surge protector complies with IEC 61643-31:2018, which confirms its high quality and reliability. By choosing this product, you are investing in long-term protection of your electrical installation.