DEHNvenCI DVCI1 255 FM Type 1+2 Surge Arrester, 1-Pole, 255 V AC, 12.5 kA (10/350 µs), DIN Rail

In industrial control cabinets and at building service entrances, the DEHNvenCI DVCI1 255 FM stands guard against transient overvoltages. This 1-pole combination arrester from DEHN + SOEHNE meets Type 1 and Type 2 requirements, making it suitable for lightning equipotential bonding and surge protection in low-voltage systems. It is engineered for 230 V AC networks and mounts on a standard 35 mm DIN rail, occupying just one module width (18 mm).

Key specifications

• SPD type: Type 1 / Type 2 (combined arrester)
• Number of poles: 1
• Nominal voltage (Un): 230 V AC (50/60 Hz)
• Max. continuous operating voltage (Uc): 255 V AC (50/60 Hz)
• Lightning impulse current (Iimp) 10/350 µs: 12.5 kA
• Nominal discharge current (In) 8/20 µs: 20 kA
• Voltage protection level (Up) at Iimp: ≤ 1.5 kV
• Voltage protection level (Up) at In: ≤ 1.0 kV
• Follow current extinguishing capability (Ifi): 100 A rms
• Short-circuit withstand capability (Isccr): 50 kA rms
• Response time (tA): ≤ 100 ns
• Operating temperature range: -40 °C to +80 °C
• Mounting: 35 mm DIN rail, 1 TE (18 mm) width
• Remote signaling contact: Yes (potential-free changeover)
• Fault indication: Visual (green/red)
• Standards: EN 61643-11 / IEC 61643-11
• Connection: Screw terminals, max. 35 mm² solid / 25 mm² stranded

Why choose it

DEHNvenCI DVCI1 255 FM combines high discharge capacity with a compact design, protecting sensitive equipment without wasting panel space. The integrated remote signaling contact enables remote monitoring, while the visual fault indicator allows quick status checks at a glance.

Ideal use cases

• Lightning equipotential bonding in industrial control cabinets
• Surge protection at building service entrances for low-voltage systems
• Protection of 230 V AC power supplies and distribution boards
• Applications requiring remote monitoring of surge protection status

Good to know

This arrester is designed for use in systems with a maximum continuous operating voltage of 255 V AC. It is suitable for both TN-S and TT systems when installed according to local regulations. The potential-free changeover contact allows integration into building management systems for remote fault signaling.