Chint NXU-IIG Surge Arrester

Type:T2
Brand Name:Chint
Place of Origin:China
Model Number:NXU-IIG, NXU-IIG/F
Rated Voltage:275Vac 320Vac 385Vac 440Vac 85Vdc 350Vdc 500Vdc
Max Discharge current:40 A

SKU: 1601244476635 Category: Chint MCB

Where to Use NXU SPD Surge Protector?

The Chint NXU-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.

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	NXU
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 NXU 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 NXU-IIG Surge Arrester 20kA 40kA 65kA 100kA 275V 320V 385V 440V 85Vdc 350Vdc 500Vdc 1P 2P 3P 4P CHNT SPD Surge Protector

NXU- Ⅱ G Low-voltage Surge Arrester

(NXU- Ⅱ G/F is with alarm terminal)

General

1 Certificates:international certificates are under proceeding;
2 Number of pole: 1,2,3,4,1P+N,3P+N;
3 Electric ratings: AC (275V 320V 385V 440V), DC (85V 350V 500V)
4 Application:Protect electric system and on-loading electrical apparatus from thunder and instantaneous over-voltage;
5 Standard:IEC/EN 61643-11