DEHN DSH ZP 2 TNC 255 Type 1+2 Surge Arrester for TN-C Systems 909530

Protect electrical installations from lightning strikes and surges with the DEHN DSH ZP 2 TNC 255. This combined Type 1+2 surge arrester is engineered for TN-C network systems, offering robust protection for low-voltage power supplies.

Who is it for

Electricians and panel builders who need reliable surge protection for TN-C systems in residential, commercial, or industrial settings. Ideal for main distribution boards where high discharge capacity is required.

Main features

• Combined Type 1+2 surge protection according to EN 61643-11
• Designed for TN-C network systems (single pole, 2 modules wide)
• High lightning impulse current: 25 kA per pole (10/350 µs), total 50 kA
• Max continuous operating voltage 255 V AC
• Low voltage protection level ≤ 1.5 kV
• DIN rail mountable, IP20 protection

Specifications

• SPD type: Type 1+2
• Network system: TN-C
• Nominal voltage: 230/400 V AC
• Max continuous operating voltage: 255 V AC
• Lightning impulse current (10/350 µs): 25 kA per pole
• Total lightning impulse current: 50 kA
• Nominal discharge current (8/20 µs): 25 kA
• Voltage protection level: ≤ 1.5 kV
• Short-circuit withstand capability: 50 kA rms
• Response time: ≤ 100 ns
• Operating temperature range: -40 °C to +80 °C
• Mounting: 35 mm DIN rail
• Degree of protection: IP20
• Number of poles: 2
• Enclosure material: Thermoplastic, UL 94 V-0

Tips

Ensure proper coordination with upstream overcurrent protection. For optimal performance, install close to the service entrance.