Chint NU6-III Surge Arrester

Type:T3
Brand Name:Chint
Place of Origin:China
Model Number:NU6-III
Rated Voltage:385V
Max Discharge current:10 A

SKU: 1600514733897 Category: Chint MCB

Where to Use NU6 SPD Surge Protector?

The Chint NU6-III 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.

Why SPD Protection is Essential

Lightning Protection - Diverts lightning-induced surges safely to earth
Equipment Protection - Prevents damage to sensitive electronics, computers, and industrial controls
Fire Prevention - Reduces risk of electrical fires caused by overvoltage
Business Continuity - Minimizes downtime from surge-related equipment failures

Technical Specifications

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

SPD Type Selection Guide

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

FAQs

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.

Description
Additional information

Description

Chint original NU6-III Type 3 SPD Surge Arrester 10kV 5kA 275V 320V 385V T3 Class III Type D CHNT Type 3 Surge protection device

Chint NU6-Ⅲ Low-voltage Surge Arrester

1. General
1.1 Certificates: international certificates are under proceeding;
1.2 Electric ratings: Single phase power distribution and control system of AC50Hz, 230V;
1.3 Short circuit current: up to 5kA (8/20μs);
1.4 Application: Protect electric system and on-loading electrical apparatus from lightening and instantaneous over-voltage;
1.5 Standard:IEC61643-1, EN61643-11