The Chint NU6-IIG Surge Arrester is a Surge Protective Device (SPD) designed to protect electrical systems from transient overvoltages caused by lightning strikes or switching surges. With discharge capacity up to 40kA, this SPD provides reliable protection for distribution boards, industrial equipment, communication systems, and sensitive electronics.
| Model | NU6 |
| Type | Type 2 (Class II/C) |
| Max Discharge Current (Imax) | 40kA |
| Voltage Protection Level (Up) | ≤1.5kV - ≤2.5kV (depending on model) |
| Standard | IEC 61643-11 / GB 18802.1 |
| Type | Location | Protection Level |
|---|---|---|
| Type 1 (Class I/B) | Main distribution board, at service entrance | Protection against direct lightning strikes |
| Type 2 (Class II/C) | Sub-distribution boards | Protection against indirect strikes and switching surges |
| Type 3 (Class III/D) | Near sensitive equipment | Fine protection for electronics |
Q: Where should I install the SPD?
A: Install Type 1 SPD at the main incoming distribution board (near the main breaker). Type 2 SPD should be installed at sub-distribution boards or downstream panels. For sensitive equipment, add Type 3 protection near the device.
Q: Does SPD need replacement after a surge?
A: The NU6 has visual indication (green/red window) showing if protection is active. After major surges, the module may need replacement. Some models have replaceable cartridges for cost-effective maintenance.
Chint original NU6-II Surge Protector 1P 2P 3P 4P 40kA 60kA 100kA Type 2 T2 C Class II 275V 320V 385V 460V Chnt Surge Arrester
Chint NU6-Ⅱ Low-voltage Surge Arrester
Number of poles: 1, 2,3, 4;
Electric ratings: 230/400V, AC50Hz;
Application: Protect electric system and on-loading electrical apparatus from thunder and instantaneous over-voltage;
Standard: IEC 61643-1, EN 61643-11
| Weight | 0.5 kg |
|---|---|
| Dimensions | 22 × 22 × 22 cm |
| Number of Pole |
2, 4 |
| Nominal Discharge current |
40kA, 65kA, 100kA |
