Dehn DEHNguard M TT 2P 275 Surge Arrester Type 2 20kA 2-Pole

The Dehn DEHNguard M TT 2P 275 is a high-performance modular Type 2 surge arrester engineered to provide robust protection for low-voltage electrical installations. Specifically designed for use in TT systems, this 2-pole device effectively mitigates the risks associated with transient overvoltages caused by atmospheric discharges or switching operations. By diverting excess energy safely to the ground, it helps prevent damage to sensitive electronic equipment and ensures the continued reliability of power distribution networks in both residential and industrial environments.

Advantages

This surge arrester features a modular design that allows for easy maintenance and component replacement without the need to disconnect the entire system. Its high discharge capacity ensures reliable performance even under demanding conditions, while the integrated status indicator provides clear visual feedback on the operational health of the protection modules. The device is built to withstand significant electrical stress, offering a durable and long-lasting solution for safeguarding critical infrastructure against voltage surges.

Suitable for

• Residential electrical distribution boards
• Industrial power supply systems
• Protection of sensitive electronic appliances
• TT system configurations

This device may not be suitable for installations requiring Type 1 lightning current arresters, such as buildings equipped with external lightning protection systems where direct lightning strikes are a primary concern. It is also not intended for use in systems with voltage ratings exceeding its specified maximum operating voltage.

Key specifications

• Type: 2 (Surge Arrester)
• Poles: 2
• Nominal discharge current: 20kA
• Maximum continuous operating voltage: 275V
• System type: TT
• Design: Modular

Installation should be performed by a qualified electrician in accordance with local electrical safety regulations. The device is typically mounted on a standard DIN rail within the main distribution board. Ensure that the connection cables are kept as short as possible to maintain optimal protection levels. The status indicator should be checked periodically to ensure the protection modules are functioning correctly.

What to consider before purchase

• Verify that the system type is compatible with TT configurations
• Ensure the voltage rating matches your local power grid requirements
• Check available space on the DIN rail within your distribution board
• Confirm if additional Type 1 protection is required for your specific site

For optimal performance, ensure that the grounding connection is robust and properly maintained. Replace any modules showing a red status indicator immediately to maintain continuous protection for your electrical system.