Surge protector, 3-pole Type 1+2 (class B+C) type PS3-B+C TNC+FS 5089756

Protection of electrical installations and devices – reliable surge arrester

This three-pole surge arrester class 1+2 (B+C) is a key element ensuring safety in every electrical installation. It provides comprehensive protection against the effects of lightning strikes and voltage surges in the grid, minimizing the risk of damage to connected devices. This is particularly important in residential, commercial and industrial buildings where sensitive electronic equipment is exposed to sudden voltage spikes.

Design and application

The arrester is designed for mounting on a DIN TH-35 mm mounting rail, which simplifies and speeds up installation. Designed to work with the TN-C network system, it effectively protects against overvoltages in both the line and neutral. Its compact dimensions allow installation even in limited space of the switchboard. The wire cross-section up to 50 mm² ensures compatibility with most standard installations.

Safety and status indication

The arrester has optical indication of operation, which informs about the need for replacement after a surge occurs. It is also equipped with a potential-free signaling contact, allowing remote monitoring of its operating status – a useful solution for building management systems (BMS) or remote supervision of the installation. The ability to extinguish the follow current at the level of 25 kA guarantees safe disconnection of the circuit in the event of a failure. The protection level of 1.7 kV effectively limits the voltage to safe values. The impulse current of 50 kA (10/350 µs) confirms high resistance to sudden current surges, and the discharge capacity of 100 kA has been confirmed by BET laboratory tests.

• Versatility: Protection class Type 1+2 (B+C) provides protection against both direct and indirect lightning strikes.

• Ready for installation: Pre-assembled arrester with connecting bridges and marked connection terminals significantly simplifies the installation process.

• Status monitoring: Optical and signaling contact allow for quick identification of a faulty device and prevention of further failures.

• Safety: The ability to extinguish the follow current and the high level of protection guarantee safe operation of the electrical installation.

• Compliance with standards: The product meets strict safety standards, ensuring reliable protection for a long time of use.