Surge protector Dehn DG M TN 275 for 230 V systems, terminal AC outlet, 50–60 Hz, red, thermoplastic, 36×73 mm, 229 g

Dehn DG M TN 275 is a modular surge arrester designed for single-phase TN systems (2+0 configuration) to protect 230 V AC installations. The device is a prewired complete unit composed of a base part and plug-in protection modules, housed in a red thermoplastic enclosure with compact dimensions suitable for installation in distribution and photovoltaic accessory panels. It is intended for coordination with other devices of the same product family and provides high discharge capacity and reliable monitoring.

Advantages

The unit offers energy coordination with other arresters from the Red/Line family and high discharge capability thanks to heavy-duty zinc oxide varistors and integrated spark gaps. It includes a "Thermo Dynamic Control" monitoring device for enhanced reliability and a module locking system with a release button that allows tool-free replacement of protection modules. The product has been vibration and shock tested according to EN 60068-2 and is certified to CE, VDE and UL standards.

Suitable for

• Protection of 230 V single-phase distribution circuits in TN systems (2+0)
• Surge protection for photovoltaic accessories and low-voltage equipment
• Use in compact distribution boards and accessory panels where space is limited

Key specifications

• Nominal system voltage: 230 V AC
• Frequency: 50–60 Hz
• Configuration: single-phase TN (2+0)
• Response time: 0.000025 ms
• Varistor technology: zinc oxide varistors and spark gaps
• Housing material and colour: thermoplastic, red
• Dimensions: 36 × 73 mm
• Weight: 229 g
• Mounting: prewired base with plug-in protection modules
• Standards: tested to EN 60068-2 (vibration and shock)

How to use

Install the prewired base in the distribution or accessory panel and connect the terminal (screw) outlet to the 230 V single-phase TN supply following local electrical regulations. Plug the protection modules into the base; the module locking system secures them in place while the release button allows tool-free removal for replacement. Ensure coordination with upstream and downstream protective devices when integrating multiple arresters from the same product family.

Usage recommendations

Use this surge protector as part of a coordinated protection scheme for 230 V TN systems. Verify correct electrical connections and ensure that replacements are made only with compatible modules from the same product family. Periodically inspect the unit for proper function and replace modules if the monitoring indicator signals a fault.