The NU6-IIG Low-Voltage Surge Protective Device offers reliable protection for electrical systems and on-loading equipment against lightning and transient overvoltage. Built for 230/400V AC 50/60Hz systems, it complies with IEC/EN 61643-11 standards and is suitable for various grounding systems (TN-S, TN-C, TT, IT). Featuring modular design, removable protection modules, and visual fault indicators, the NU6-IIG ensures safe, efficient surge suppression in residential, commercial, and industrial networks.

• Standard Compliance: IEC/EN 61643-11
• Rated Operating Voltage (Ue): 230/400V AC, 50/60Hz
• Available Pole Configurations: 1P, 2P, 3P, 4P, 1P+N, 3P+N
• Protection Levels: Maximum Continuous Operating Voltage (Uc): 275V / 320V / 385V / 440V; Protection Level (Up): 1.5–2.4kV depending on model; Maximum Discharge Current (Imax): 40kA / 65kA / 100kA (8/20μs waveform); Nominal Discharge Current (In): 20kA / 30kA / 50kA
• Auxiliary Contact Options: 1NO+1NC, rated at AC250V, 0.5A (for remote signaling)
• Grounding System Compatibility: TN-S: L–PE, L–N, N–PE; TN-C: L–PEN; TT: L–N, N–PE; IT: L–PE
• Construction Features: Modular structure with removable protective module and base, visual fault indicator for damaged modules, no need to disconnect circuit when replacing module, voltage indicator window prevents mismatched replacement
• Installation Type: DIN rail mounting (TH35-7.5)
• Dimensions (mm): Width per pole: 18 mm; Height: 67.7 mm; Depth: 50 mm; Length varies from 18 mm (1P) to 144 mm (4P)
• Optional Remote Signaling Port: Available in “/F” versions
• Certifications: CE, RoHS