Contator CA CHNT CJX2-4011

CJX2-4011 is a 3-contator CA de pólo from CHNT’s classic CJX2 series, with a 40A rated current and equipped with 1 NÃO + 1 Contatos auxiliares NC.

It is suitable for AC-3 duty (por exemplo, three-phase motors) and widely used in industrial motor control, power distribution switching, e sistemas de automação. It is a cost-effective choice from a leading domestic brand.

1. Modelo & Part Number Explanation

2. Especificações Técnicas Principais

3. Características & Vantagens
4. High-reliability contact system

Silver alloy contacts offer good conductivity, anti-welding, and arc resistance

32-sheet silicon steel core for stable, low-noise operation (≤55dB)

Red copper coil + flame-retardant housing for high temperature resistance

2. Dual mounting flexibility

Standard 35mm DIN rail for quick installation

Also supports screw mounting for panel installation

3. Economia de energia

Low power consumption for long-term operation

Stable coil pull-in, reduced control circuit energy use

4. Strong compatibility

Directly matches CHNT NR2 series thermal overload relays

Dimensions compatible with Schneider LC1-D40 series for direct replacement

4. Instalação & Wiring Guide

4.1 Requisitos de instalação

Trilho DIN: Clip onto 35mm standard rail and ensure full locking

Montagem de parafuso: Use M4 screws on a flat surface with ≥10mm clearance for heat dissipation

Prefer vertical installation; avoid horizontal mounting

4.2 Especificação de fiação

4.3 Key Wiring Notes

Do NOT mix main pole and coil terminals

Securely crimp wires to avoid overheating

When used with a thermal relay, connect it after T1/T2/T3

5. Aplicações Típicas

Controle de motor trifásico: 7.5kW~18.5kW pumps, fãs, transportadores

Distribuição de energia industrial: cabinet switching, capacitor bank control

Linhas de produção automatizadas: PLC-controlled start/stop and interlock

Building systems: AVAC, elevadores, bombas de incêndio

Máquinas-ferramentas: lathes, milling machines, máquinas de perfuração

6. Modelos de substituição & Compatibilidade

6.1 CHNT Upgraded Replacements

6.2 Equivalentes entre marcas

7. Purchasing & Dicas de uso
8. Authenticity

Buy via official channels to avoid counterfeits

Verify model, tensão da bobina, and poles

2. Acessórios

Must use with NR2 thermal relay for motor overload protection

Surge suppressor (SR2 series) recommended for frequent switching

3. Selection Rules

AC-3 for motors; AC-1 for resistive loads

Coil voltage must match control power

Higher protection grade for dusty/humid environments

4. Manutenção

Check terminal tightness every 6–12 months

Clean contacts and replace if worn

Energize briefly before long-term storage

> Observação: CJX2-4011 is a general-purpose contactor with high cost-performance, stable supply, and easy replacement. Widely used in machinery, químico, building materials, indústria leve.

Complete CHNT AC Contactor Series-Models & Códigos de pedido

Core Overview

CHNT AC contactors cover 5 main series:

CJX2 (classic), NXC (Kunlun upgrade), NC1 (industrial IEC), NC2 (alta corrente), NC8 (high voltage heavy duty).

Models are coded by current + contatos auxiliares + tensão da bobina.

Order codes start with 710010xxxx and cover 6A ~ 1250A.

1. Série CJX2 (Classic, sendo eliminado gradualmente)

Aplicativo: Small-medium motors, 35mm trilho DIN, compatible with Schneider LC1-D.

> Observação: 01= 1NC, 10=1NÃO, 11=1NA+1NC. Coil voltages: AC24/36/110/220/380V. Durar 3 digits = voltage code.

2. Série NXC (Kunlun Upgrade, Convencional)

Aplicativo: CJX2 replacement, smaller, lower power, vida mais longa.

> Observação: Z = DC coil (por exemplo, NXC-12Z DC24V); M = mechanical latching.

3. NC1 Series (Industrial IEC Standard)

Aplicativo: International standard, alta confiabilidade, operação frequente.

> Observação: NC1-N = reversing contactor. Z = DC coil.

4. Série NC2 (High Current Industrial)

Aplicativo: Heavy motors & main circuits up to 800A.

> Observação: 3P/4P available. Viagem de manobra, undervoltage release optional.

5. NC8 Series (High Voltage Heavy Duty)

Aplicativo: Up to 1140V, 2650A for metallurgy, mineração, marine.

> Observação: M = mechanical latching. 4P for 3P+N systems. DC coil available.

6. General Selection & Order Code Rules

6.1 Model Coding

6.2 Order Code Format

Padrão: 710010xxxxxxx

Exemplo:

CJX2-4011 AC220V → 710010200403220

NXC-12 DC24V → 710010100000500Z

6.3 Principais pontos de seleção

1. Carregar: AC-3 for motors; AC-1 for resistive loads
2. Coil voltage must match control power
3. Contatos auxiliares: 10, 01, 11, 22
4. Poloneses: 3P para trifásico; 4P for 3P+N
5. Comparação de séries & Recomendação