Contator,disjuntor,inversor solar,medidor elétrico,baterias solares
CJX2-3210 is a 3-pole 32A Contator CA from CHINT CJX2 series, com 3 NO main poles + 1 SEM contato auxiliar.
It is suitable for controlling 15kW motors at AC-3 380V. Coil voltages include 220V/380V and others.
Direct replacement models include Schneider LC1N3210, Siemens 3RT6035-1AN20, etc..
- Explicação do modelo & Posicionamento Básico
| Peça do modelo | Significado |
| CJX2 | CHINT AC contactor series (equivalent to Schneider LC1‑D series) |
| 32 | Rated operational current 32A (AC‑3 utilization category at 400V) |
| 10 | Contatos auxiliares: 1 NÃO + 0 NC |
Posicionamento do produto:
Industrial‑grade general‑purpose AC contactor, suitable for frequent starting and control of AC motors.
Can form a magnetic starter with thermal overload relays for motor protection.
- Principais parâmetros técnicos
| Item | Especificação |
| Tensão operacional nominal | Up to 690V AC (50/60Hz) |
| Corrente operacional nominal | 32UM (AC‑3 400V), thermal current Ith = 50A |
| Controlled power | 15kW (AC‑3 380V), 21UM (AC‑3 660V) |
| Contato auxiliar | 1 NÃO, rated 5A/220V AC |
| Tensão da bobina | Opcional: 220V/380V/110V/36V/24V AC |
| Insulation characteristics | UI = 660V, compliant with GB14048.4 / IEC60947‑4‑1 |
| Mecânico / vida elétrica | 10 milhão de vezes / 1 milhão de vezes (AC-3) |
| Dimensões (C×L×A) | 83×58×101 mm |
| Montagem | Trilho DIN padrão de 35 mm |
- Características estruturais & Materials
- Silver alloy contacts: Excellent conductivity and arc resistance, ensuring reliable switching.
- 32‑sheet silicon steel core: Reduces hysteresis loss, smoother pull‑in, stable operation.
- Flame‑retardant housing: Meets V0 flame rating, improves safety.
- Clear side marking: Modelo, tensão, Certificação CCC, etc..
- Aplicativos
- Automação industrial: Controle motor, fãs, bombas, compressores.
- Building electrical: AVAC, fire pumps, exhaust fans.
- Agricultural machinery: Irrigação, feed processing equipment.
- Sistemas de energia: Remote circuit control in distribution panels.
- Typical matching: Long‑running oil station motors, unidirectional equipment (no NC auxiliary required).
- Comparison Within CJX2 Series
| Modelo | Corrente nominal | Para. Contatos | AC‑3 380V Power | Dimensões (milímetros) |
| CJX2‑0910 | 9UM | 1 NÃO | 4kW | 73×47×82 |
| CJX2‑1810 | 18UM | 1 NÃO | 7.5kW | 73×47×82 |
| CJX2‑2510 | 25UM | 1 NÃO | 11kW | 83×58×96 |
| CJX2‑3210 | 32UM | 1 NÃO | 15kW | 83×58×101 |
| CJX2‑4011 | 40UM | 1 NÃO + 1 NC | 18.5kW | 128×79×116 |
| CJX2‑6511 | 65UM | 1 NÃO + 1 NC | 30kW | 128×79×116 |
- Cross‑Brand Replacements
| Marca | Modelo de substituição | Compatibilidade |
| Schneider | LC1N3210M7N / LC1R3210M5N | Mesmas dimensões & parameters |
| Siemens | 3RT6035‑1AN20 (domestic type) | Funcionalmente equivalente, montagem compatível |
| ABB | A145‑30‑11 (32A class) | Para. can be configured as 1 NÃO |
| Delicioso | CJX2‑3210 | Fully interchangeable |
| Interruptor Changshu | CK3‑3210 | Mesmo desempenho & parameters |
- Seleção & Notas de aplicação
- Tensão da bobina: Selected per control circuit (commonly 220V / 380V).
- Correspondência de carga: 32A ≈ 15kW at AC‑3 380V; avoid overload.
- Para. contact expansion: F4‑11 or similar modules can be added.
- Protection coordination: Used with NR2 series thermal relays (por exemplo. NR2‑36) for overload protection.
- Ambiente: Operating temperature ‑5°C ~ +40°C; avoid dust & corrosive gas.
Embalagem: 4 pcs/box, 32 peças/caixa
Comparison of CHINT Contactor Series
Overview:
CHINT contactors are divided into:
Classic (CJX2/CJ20/CJX8), Upgraded (NXC/NC5), High‑Power (NC8), DC Special (CJZ8/NCZ5).
NXC fully replaces CJX2 with better performance; NC5 focuses on intelligence & modularity; NC8 covers ultra‑high current; CJZ8 is for DC control.
Prioridade: NXC / NC5; use special series for special applications.
- Series Positioning & Substituição
| Série | Posicionamento | Replaced By / Replaces | Principais recursos |
| CJX2 | Classic general | Fully replaced by NXC | Custo-benefício, simple structure, flexible aux. contatos |
| NXC | New generation | Substitui CJX2, upgraded | Alta eficiência, longa vida, standard 1NO+1NC, strong modularity |
| NC5 | Inteligente & premium | High‑end market | Wide temp ‑25°C~+55°C, comunicação, complex automation |
| NC8 | High‑power heavy‑duty | Independent, up to 1000A | Up to 1000A AC‑3 415V, for large motors & heavy industry |
| CJX8 | Traditional heavy‑duty | Partially replaced by NC8 | Direct‑operated double break, suitable for legacy retrofits |
| CJ20 | Traditional general | Replaced by NXC/NC5 | Mature structure, baixo custo, civil & indústria leve |
| NXC‑XMG | Special load | Independent | For fans & bombas, high energy saving |
| CJZ8/NCZ5 | DC dedicated | Independent | Enhanced arc extinguishing, nova energia & energy storage |
- Principais parâmetros técnicos
2.1 Basic Electrical Data
| Série | Faixa Atual | Tensão nominal | AC‑3 380V Power | Auxiliar padrão. Contatos |
| CJX2 | 9A~95A | Até 690V | 0.75kW~45kW | Below 32A: 1NÃO/1NC; ≥40A:1NÃO+1NC |
| NXC | 6A~630A | Até 690V | 0.37kW~315kW | Full range: 1NÃO+1NC |
| NC5 | 6A~630A | Até 690V | 0.37kW~315kW | 1NÃO+1NC, expandable to 6NO+6NC |
| NC8 | 6A~1000A | Até 690V | 0.37kW~500kW | 2NÃO+2NC, expandable to 6NO+6NC |
| CJX8 | 9A~250A | Up to 660V | 4kW~110kW | 3NO+1NO/1NC or 4NO |
| CJ20 | 10A~630A | Up to 660V | 5.5kW~315kW | 1NÃO+1NC |
2.2 Life & Ambiente
| Série | Vida Mecânica | Vida Elétrica (AC-3) | Temperatura operacional | Montagem |
| CJX2 | 10 million | 1 million | ‑5°C~+40°C | 35mm DIN / parafuso |
| NXC | 12 million | 1.2 million | ‑25°C~+55°C | 35mm DIN / parafuso |
| NC5 | 15 million | 1.5 million | ‑25°C~+55°C | 35mm DIN / parafuso |
| NC8 | 10 million | 0.8 million (alta corrente) | ‑25°C~+55°C | Mainly screw |
| CJ20 | 8 million | 0.8 million | ‑5°C~+40°C | Parafuso |
- Estrutura & Functional Differences
3.1 CJX2 (Classic)
Estrutura: Direct‑operated single break, modular; F4 aux., F5 timer, NCF1 side aux. available.
Contatos: Silver alloy, 3P main, flexible aux. (10/01/11).
Bobina: CA/CC, 24V~380V.
3.2 NXC (Upgraded)
Optimized magnetic system, coil power ≈ 30% lower than CJX2.
Improved silver alloy contacts, better arc extinguishing.
Standard 1NO+1NC; supports aux., timer, mechanical interlock.
3.3 NC5 (Smart Premium)
Optional communication module (Modbus, etc.) for IIoT.
Wide temperature, suitable for outdoor & ambientes agressivos.
Enhanced insulation & short‑circuit withstand.
3.4 NC8 (High‑Power)
Enhanced arc chamber for high‑current breaking up to 1000A.
Optimized heat dissipation for heavy‑duty continuous operation.
Heavy‑duty mechanical structure, high vibration resistance.
3.5 CJX8 (Traditional Heavy‑Duty)
Direct‑operated double break; front‑connected or rear‑connected versions.
Até 4 postes (3 principal + 1 aux or 4 principal) for special applications.
3.6 Contatores CC
CJZ8: Low‑voltage DC (12V~220V), up to 40A, small DC loads.
NCZ5: High‑voltage DC (up to 1500V), up to 500A, new energy vehicles & energy storage.
Dedicated DC arc extinguishing structure.
- Cenários de aplicação
| Série | Best For | Typical Load | Not Recommended |
| CJX2 | Legacy retrofit, projetos orçamentários | Small motors ≤15kW, iluminação, aquecimento | High‑end automation, ambientes agressivos |
| NXC | Automação industrial, new projects | Medium motors ≤315kW, fãs, bombas | Ultra‑large motors, special DC loads |
| NC5 | Fábricas inteligentes, complex systems, outdoor | Médio & motores grandes, linhas de produção | Cost‑sensitive simple circuits |
| NC8 | Large industry, poder, metalurgia | Large motors ≤500kW, transformadores | Cargas pequenas, civil buildings |
| CJX8 | Legacy maintenance, special control | Traditional machinery, special circuits | New smart projects |
| CJ20 | Civil, indústria leve, temporary power | AC units, bombas, small machines | Frequent switching, high‑end automation |
| DC series | Nova energia, energy storage, trilho | DC motors, batteries, carregadores | AC loads |
- Guia de seleção & Substituições
5.1 Selection Priority
- Novos projetos: NXC (replaces CJX2)
- Smart/complex systems: NC5
- Ultra‑high power >315kW: NC8
- DC loads: CJZ8 / NCZ5
- Legacy retrofit: CJX2/CJ20/CJX8 or upgrade to NXC/NC5
5.2 Cross‑Series Replacement
| Original | Substituição recomendada | Vantagem |
| CJX2‑09~95 | NXC‑06~100 | Standard 1NO+1NC, life +20%, power ‑30% |
| CJ20‑10~630 | NXC‑12~630 / NC8‑12~1000 | Better performance, modular, manutenção mais fácil |
| CJX8‑09~250 | NC8‑06~250 | Better arc extinguishing, wide temperature |
5.3 Model Selection Tips
Atual: 32A ≈ 15kW; 63A ≈ 30kW; 100A ≈ 45kW at AC‑3 380V.
Para. contatos: NXC has 1NO+1NC standard; CJX2 uses 10/01/11.
Bobina: 220V/380V/110V/36V/24V AC/DC.
Montagem: 35mm DIN preferred; screw for high power.
- Special Notes: CHINT CJX2‑3210
As a representative model of CJX2 series, CJX2‑3210 is a 3‑pole 32A AC contactor with 3 SEM contatos principais + 1 SEM contato auxiliar, suitable for 15kW motor control at AC‑3 380V.
Common replacements:
CHINT NXC‑3210 (upgraded)
Schneider LC1N3210M7N
Siemens 3RT6035‑1AN20
ABB A145‑30‑11 (32A class)
![NXC-65 from the Kunlun Series by CHINT Electric is a 3-pole AC contactor, rated at 65A in the NXC series. The full model is typically expressed as NXC-65 [Coil Voltage] [Frequency]](https://www.bestcontactor.com/wp-content/uploads/2026/04/ScreenShot_2026-01-30_132315_324-419x560.png "NXC-65 da série Kunlun da CHINT Electric é um contator CA de 3 pólos, avaliado em 65A na série NXC. O modelo completo é normalmente expresso como NXC-65 [Tensão da bobina] [Freqüência]")
