CHINT NU5-II Low-Voltage Surge Protective Device

CHINT NU5-II Low-Voltage Surge Protective Device,
provides advanced Class II surge protection for AC 230/400 V systems,
furthermore shielding equipment from transient overvoltage and lightning-induced surges.
With discharge capacities up to 160 kA and plug-in modular design,
moreover it ensures reliable performance and easy maintenance. Featuring aging and thermal protection,
in addition to visual fault indicators, and optional remote signaling, the NU5-II SPD is ideal for residential, commercial,
and finally industrial low-voltage distribution networks.

• Standard: IEC/EN 61643-11
• Certifications: CE, CB, RoHS
• SPD Type: Type II (Class II test)
• Application: Low-voltage AC power distribution and control systems (50/60 Hz)
• Rated Operating Voltage (Ue): Single-phase 230 V / Three-phase 400 V
• Maximum Continuous Operating Voltage (Uc): 275 V / 385 V / 440 V
• Maximum Discharge Current (Imax, 8/20 μs): 20 kA – 160 kA
• Nominal Discharge Current (In): 10 kA – 80 kA
• Protection Level (Up): 1.2 – 2.8 kV
• Poles Available: 1P, 1P+N, 2P, 3P, 3P+N, 4P
• Protection Modes: L–PE, N–PE, L–N
• Grounding Systems: TT, TN-C, TN-S, IT (per IEC 60364-5-534)
• Remote Alarm Contact: Optional (F-type models)
• Remote Contact Rating: AC 250 V / 1 A; DC 125 V / 0.2 A
• Connection Wires: 4–16 mm² (Input: 10–25 mm², Ground: 16–25 mm²)
• Tightening Torque: 2.0 N·m
• Mounting: 35 mm DIN rail (TH35-7.5)
• Pluggable Modules: Yes (easy replacement and maintenance)
• Dimensions (W × D × H):
  • 1P: 18 mm
  • 1P+N/2P: 36 mm
  • 3P: 54 mm
  • 3P+N: 72 mm
  • 4P: 72 mm
• Operating Temperature Range: −40 °C to +70 °C
• Protection Features: Thermal and aging protection, visual fault indication
• Installation Environment: Indoor (IP20 protection rating)