Surge arrester T2, T3 (C, D) - with fuse insert ETITEC MF T23 300/20 3+1 RC 002440711

Electrical installation protection with ETITEC MF T23 surge limiters

The ETITEC MF T23 300/20 3+1 RC surge limiter is a reliable element protecting the electrical installation against the effects of atmospheric and switching surges. A Class T2 and T3 device with a built-in fuse, it effectively protects electrical and electronic devices from damage. This is particularly important in residential, commercial and industrial buildings where sensitive receivers require solid protection.

Design and application

The limiter is designed for mounting on a DIN TH-35 mm mounting rail, occupying 4 modules. Optical signaling of the device's operation informs about the need to replace the fuse after a surge occurs. Integrated overprotection provides an additional level of safety, and the remote signaling contact allows integration with the installation monitoring system. Adapted to work in TN-S and TT network systems, making it a universal solution for different types of installations.

Advantages and benefits

• High protection efficiency: Rated discharge current up to 20 kA (8/20 μs) and protection level of 1.5 kV (L-N and N-PE) provide effective protection against surges.
• Versatility: Possibility of use in TN-S and TT network systems increases the range of applications of the device.
• Status indicator: Optical signaling of operation facilitates quick identification of a damaged limiter and the need to replace the fuse.
• Remote signaling: Remote signaling contact allows integration with the installation status monitoring system, increasing safety and enabling a quick response in the event of a failure.
• Safety: Integrated overprotection protects against overload and short circuit, providing an additional level of safety.
• Installation flexibility: Possibility of connecting wires with a cross-section of up to 35 mm² (single-/multi-strand) and 25 mm² (flexible) ensures compatibility with various types of wires.
• Durability: Short-circuit strength at the level of 50 kA guarantees reliable operation of the device in difficult operating conditions.
• Compact dimensions: Occupies only 4 modules on the DIN rail, making it easy to install even in tight switchboards.

The ETITEC MF T23 limiter is an investment in the safety of your electrical installation and connected devices – for both professional installers and end users.