Surge arrester varistor for photovoltaic installations T2 4P 3+1 TN-S/TT network In=20kA Up1, 35kV contact SPB415

Photovoltaic installation protection – reliable surge arrester Hager SPB415

The Hager SPB415 varistor surge arrester is a key element in protecting photovoltaic installations from the effects of lightning strikes and surges. Designed to operate in TN-S, TT and TN-C-S networks, it effectively protects electrical equipment and ensures uninterrupted power supply. This model is particularly recommended for use in residential and commercial buildings with connected photovoltaic systems.

This four-pole (4P) surge arrester with optical status indication allows for quick identification of any activation and the need for replacement. Its compact design – occupying 4 modules on a TH-35 mm DIN rail – makes it easy to install in electrical distribution boards. The rated discharge current of 20kA (8/20µs) and the maximum discharge current of 40kA guarantee effective protection against sudden voltage spikes.

Safety and functionality for the installer and user

The SPB415 surge arrester has been designed with ease of installation and reliable operation in mind. Mounting on a standard TH-35 mm DIN rail is simple and intuitive, and the remote signaling contact allows integration with monitoring and alarm systems. This allows the installer to be sure that the surge protection system is working correctly, and the end user is informed of any failures.

• Versatility: Compatible with various network configurations: TN-S, TT, TN-C-S.
• Optical indication: Enables quick identification of the device status – visual control without the need for disassembly.
• High resistance: Rated discharge current of 20kA (8/20µs) and maximum discharge current of 40kA provide effective protection against surges.
• Compact dimensions: Occupies only 4 modules on a TH-35 mm DIN rail, making it easy to install in limited space.
• Safety: Protection level up to 1.35 kV protects sensitive electronic devices in the photovoltaic installation.
• Universality: Suitable for conductors with a cross-section of up to 35 mm² (solid/stranded) and 25 mm² (flexible).
• Compliance with standards: Ensures compliance with applicable IEC 61643 safety standards.

Technical parameters and application

The SPB415 surge arrester is used in photovoltaic installations as an element of protection against the effects of lightning strikes and surges originating from the power grid or other sources. Its high efficiency and reliability make it an ideal solution for both new and modernized photovoltaic systems. It provides protection for devices such as inverters, charge controllers and other components of the PV system. Additionally, thanks to the possibility of remote status signaling, it enables proactive risk management and minimization of downtime in the operation of the installation. Short-circuit strength at 25 kA further increases the safety of the device in difficult operating conditions.