Dehn DG S 275 Surge Arrester, 230 V, 1-Pole

The Dehn DG S 275 is a high-performance 1-pole surge arrester engineered to provide robust protection for 230 V AC electrical systems. This device is designed to safeguard sensitive equipment from transient overvoltages by diverting excess energy safely to the ground. Constructed from durable red thermoplastic, the unit features a modular design that integrates a base part with a plug-in protection module, allowing for efficient maintenance and replacement. With its advanced zinc oxide varistor technology and Thermo Dynamic Control monitoring, it ensures consistent reliability in various electrical environments.

Advantages

This surge arrester offers exceptional discharge capacity, making it suitable for demanding industrial and residential applications. The inclusion of a clear green and red indicator flag allows for immediate visual status monitoring, ensuring that users are always aware of the device's operational state. Its compact, narrow modular design adheres to standard DIN dimensions, facilitating easy installation in crowded distribution boards. Furthermore, the multifunctional terminals support both conductors and busbars, providing flexibility during setup. The device is rigorously tested for vibration and shock resistance, ensuring long-term durability even in challenging conditions.

Suitable for

• Residential electrical distribution boards
• Industrial control panels
• Protection of sensitive electronic equipment
• AC power supply systems operating at 50-60 Hz

When it may not be suitable

This device is a single-pole arrester and is not intended for use as a standalone solution in multi-phase systems without appropriate coordination with other protective devices. It is specifically designed for 230 V AC networks and should not be installed in DC circuits or systems exceeding its rated voltage specifications.

Key specifications

• Nominal voltage: 230 V AC
• Frequency range: 50-60 Hz
• Response time: 25 ns
• Discharge capacity: 20000 A
• Material: Thermoplastic
• Dimensions: 18 mm width, 73 mm depth
• Weight: 130 g
• Certifications: CE, KEMA, VDE, UL, CSA

How to use

The Dehn DG S 275 is designed for mounting on standard DIN rails. Begin by securing the base part onto the rail and connecting the phase and ground conductors to the multifunctional terminals. Once the base is wired, insert the plug-in protection module until it clicks into place. The module locking system ensures a secure connection. To monitor the device, observe the indicator flag in the inspection window; a green color indicates normal operation, while a red color signals that the module has reached its end of life and requires replacement. The module can be easily removed by pressing the release button.

What to consider before purchase

• Ensure the voltage rating matches your electrical installation requirements.
• Verify that the installation space accommodates the 18 mm modular width.
• Confirm that the device is compatible with your existing surge protection coordination strategy.
• Check local electrical regulations regarding the installation of surge protective devices.

Usage recommendations

For optimal safety and performance, ensure that the surge arrester is installed by a qualified electrician in accordance with local electrical codes. Regularly inspect the status indicator to ensure the protection module remains active and effective.