DEHN DEHNshield ZP 2 SG TNS 255 Type 1+2 Combined Lightning Current and Surge Arrester 909640

Protect your TN-S power distribution system from the destructive energy of direct lightning strikes and switching surges. The DEHN DEHNshield ZP 2 SG TNS 255 combines Type 1 and Type 2 surge protection in a single compact unit, safeguarding low-voltage consumer installations against high-energy transients.

Who is it for

Electrical planners, panel builders, and facility managers who need reliable, space-saving surge protection for main distribution boards in buildings with TN-S earthing systems. Ideal for applications where lightning current and surge voltage protection must be integrated in one device.

Main features

• Combined Type 1+2 lightning current and surge arrester for TN-S networks
• High discharge capacity: 25 kA total lightning impulse current (10/350 µs)
• Low voltage protection level ≤ 1.5 kV for effective equipment protection
• Thermal disconnector with visual fault indication (green/red)
• Compact 2-module DIN rail mounting

Specifications

• SPD type: Combined lightning current and surge arrester Type 1 + Type 2
• Network configuration: TN-S
• Nominal voltage: 230 / 400 V AC
• Max. continuous operating voltage: 255 V AC
• Total lightning impulse current (10/350 µs): 25 kA
• Lightning impulse current per pole (10/350 µs): 12.5 kA
• Nominal discharge current per pole (8/20 µs): 25 kA
• Max. discharge current per pole (8/20 µs): 50 kA
• Voltage protection level at I_imp: ≤ 1.5 kV
• Voltage protection level at I_n: ≤ 1.2 kV
• Response time: < 100 ns
• Operating temperature range: -40 °C to +80 °C
• Mounting type: 35 mm DIN rail
• Number of modules: 2 TE
• Degree of protection: IP20
• Short-circuit withstand capability: 50 kA_rms
• Integrated disconnector: Yes, thermal
• Fault indication: Visual (green/red)
• Standards compliance: IEC 61643-11 / EN 61643-11

Tips

Install the DEHNshield ZP 2 SG TNS 255 at the service entrance or main distribution board to protect downstream equipment. Ensure proper earthing and follow local wiring regulations for TN-S systems.