DEHN 952310 Modular Surge Arrester for TT and TN-S Systems IP20

Protect your electrical equipment from damaging transient overvoltages caused by lightning strikes or switching operations. The DEHN 952310 is a modular surge arrester designed for TT and TN-S power supply systems, providing reliable protection for residential and commercial installations.

Who is it for

This surge arrester is intended for electricians, panel builders, and facility managers who need to safeguard sensitive electronics and electrical infrastructure in buildings with TT or TN-S earthing arrangements. It is suitable for installation in distribution boards and control cabinets.

Main features

• Type 2 surge arrester according to EN 61643-11
• Nominal voltage: 230 / 400 V AC
• Max. continuous operating voltage: 275 V AC
• Nominal discharge current: 20 kA (8/20 µs)
• Max. discharge current: 40 kA (8/20 µs)
• Voltage protection level: ≤ 1.2 kV
• 4 poles for three-phase systems
• Mounts on 35 mm DIN rail
• Visual status indication (green/red)
• Integrated thermal disconnector

Specifications

• System compatibility: TN-S, TT
• Number of poles: 4
• Mounting type: 35 mm DIN rail
• Ingress protection: IP20
• Operating temperature range: -40 °C to +80 °C
• Housing material: Thermoplastic
• Connection cross-section (solid): 1.5 - 35 mm²
• Connection cross-section (stranded): 1.5 - 25 mm²
• Follow current extinguishing capability: 100 A (L-N)
• Response time: < 100 ns

Tips

Install the DEHN 952310 as close as possible to the incoming power supply to maximize protection. Ensure proper earthing and follow local wiring regulations. The visual indicator allows quick status checks during routine maintenance.