T2 surge arrester insert 40 KA IT-440V 412301

Surge protection in electrical installations

This Class T2 surge arrester is a key element in protecting electrical installations from the effects of lightning strikes and other network disturbances. Designed for mounting on a TH-35 mm DIN rail, it provides effective protection for electrical and electronic devices. Its compact size – only 1 module – allows for easy integration with existing distribution boards.

Characteristics and application

The arrester is designed for protection in TN, TN-C and TN-C-S network arrangements, as well as in IT systems. Its task is to dissipate excess energy generated by surges, protecting connected devices from damage. Optical indication of operation facilitates quick identification of a situation where the arrester has reacted and potentially needs to be replaced. The rated discharge current at 20 kA (peak value 8/20) guarantees effective protection against impulsive overvoltages. A higher model with a current of 40kA is also available.

Key features and benefits

• Versatility: Compatible with various network arrangements (TN, TN-C, TN-C-S, IT), making it a universal solution for many installations.
• Compact dimensions: Occupies only 1 module on the DIN rail, saving valuable space in the distribution board.
• High efficiency: Rated discharge current of 20 kA provides effective protection against surges.
• Optical indication: Enables quick visual control of the arrester status and any need for replacement.
• Safety: Protection level of 2.1 kV minimizes the risk of damage to connected devices.
• Mounting: Easy mounting on a standard TH-35 mm DIN rail – saving time during installation.
• Rated AC voltage: 400 V, and the highest AC operating voltage is 440 V – adaptation to standard electrical installations.
• IP20 protection degree: Provides basic protection against touching with fingers and solid bodies.