Surge arrester T1+T2 12.5/60 1P 412270

Protection of electrical installations against overvoltage

The Legrand 12.5/60 1P T1+T2 surge protector is a reliable element protecting the electrical installation against the effects of lightning strikes and voltage surges in the network. The device is designed for mounting in main distribution boards, providing comprehensive protection in 230/400 V~, 50/60 Hz networks. It meets the requirements of IEC/EN 61643-11 and combines the features of Type 1 and Type 2 surge protectors, offering a wide range of protection.

Construction and application

The construction based on varistor technology guarantees a quick and effective response to sudden voltage changes. This surge protector is ideal for use in TT, TN-C, TN-S and TN-C-S network systems. Its compact size – only 1 module – makes it easy to install even in tight distribution boards. The replaceable cartridge with a status indicator (green – functional, orange – to be replaced) allows for easy monitoring of the device's condition and a quick response in the event of a failure.

Key features and benefits

• Versatile protection: The combination of Type 1 and Type 2 protection provides protection against both direct lightning strikes and overvoltages from the network.
• High efficiency: The rated discharge current of 25 kA (8/20 µs) and the maximum discharge current of 60 kA (8/20 µs) guarantee effective protection even with large overvoltages.
• Optical signaling: The built-in optical indicator informs about the operation of the surge protector, making it easier to diagnose problems.
• Easy installation: Mounting on a TH-35 mm DIN rail is quick and easy, which translates into time savings during installation.
• Universality: Compatibility with various network systems (TT, TN-C, TN-S, TN-C-S) makes these surge protectors usable in a wide range of applications.
• Safety: The protection level of 1.9 kV minimizes the risk of damage to connected devices.
• Adapted for large diameter conductors: The maximum cross-section of the flexible conductor up to 25 mm² and the rigid conductor up to 35 mm² ensures compatibility with most installations.
• Recommended overcurrent protection: For optimal protection, it is recommended to use with a S 300 TX³/DX³ C 63A circuit breaker.