DEHN DEHNbox DBX TC B 180 Lightning Current Arrester Type 1 3-Pole 230/400V 180kA IP65 922220

Electrical contractors and facility managers install the DEHNbox DBX TC B 180 at the service entrance of TN-C power systems to protect electrical installations from direct lightning strikes. This Type 1 surge protective device diverts high-energy lightning currents safely to earth, preventing damage to switchgear and downstream equipment.

Key specifications

• SPD type: Type 1 (Class I)
• System configuration: TN-C
• Nominal voltage: 230 / 400 V AC
• Max. continuous operating voltage: 255 V AC
• Nominal lightning impulse current per pole (10/350 µs): 50 kA
• Total nominal lightning impulse current (10/350 µs): 180 kA
• Specific energy per pole: 2.25 MJ/Ohm
• Follow current extinguishing capability: 100 kA rms
• Response time: ≤ 100 ns
• Degree of protection: IP65
• Operating temperature range: -40 °C to +80 °C
• Mounting type: Wall mounting
• Connection cross-section solid: 1.5 - 35 mm²
• Connection cross-section stranded: 1.5 - 50 mm²
• Housing material: Thermoplastic, UV-stabilised, halogen-free
• Colour: Grey (RAL 7035)
• Number of poles: 3

Why choose it

The DEHNbox DBX TC B 180 combines high discharge capacity with a compact, weatherproof enclosure. Its spark-gap technology ensures reliable follow current extinguishing without additional back-up fuses, simplifying installation and reducing maintenance.

Ideal use cases

• Main distribution boards in residential and commercial buildings
• Industrial facilities with TN-C earthing systems
• Outdoor installations requiring IP65 protection

Good to know

This arrester is designed for wall mounting and can be installed directly at the service entrance. It meets the requirements of IEC 61643-11 and EN 61643-11 for lightning current arresters.