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CJX2-3210 is a 3-pole 32A contactor de CA from CHINT CJX2 series, con 3 NO main poles + 1 SIN contacto 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..
- Explicación del modelo & Basic Positioning
| Parte del 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 | Contactos auxiliares: 1 NO + 0 CAROLINA DEL NORTE |
Posicionamiento del producto:
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.
- Parámetros técnicos clave
| Artículo | Especificación |
| Tensión operativa nominal | Hasta 690 VCA (50/60Hz) |
| Corriente operativa nominal | 32A (AC‑3 400V), thermal current Ith = 50A |
| Controlled power | 15kilovatios (AC‑3 380V), 21A (AC‑3 660V) |
| Contacto auxiliar | 1 NO, rated 5A/220V AC |
| voltaje de la bobina | Opcional: 220V/380V/110V/36V/24V AC |
| Insulation characteristics | UI = 660V, compliant with GB14048.4 / IEC60947‑4‑1 |
| Mecánico / vida electrica | 10 millones de veces / 1 millones de veces (AC‑3) |
| Dimensiones (L×W×H) | 83×58×101 mm |
| Montaje | Carril DIN estándar de 35 mm |
- Características estructurales & Materiales
- 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, Voltaje, Certificación CCC, etc..
- Aplicaciones
- Automatización industrial: control de motores, fans, zapatillas, compresores.
- Electricidad del edificio: climatización, bombas contra incendios, exhaust fans.
- Agricultural machinery: Irrigation, feed processing equipment.
- Sistemas de energía: Remote circuit control in distribution panels.
- Typical matching: Long‑running oil station motors, unidirectional equipment (no NC auxiliary required).
- Comparison Within CJX2 Series
| Modelo | Corriente nominal | Aux. Contactos | AC‑3 380V Power | Dimensiones (mm) |
| CJX2‑0910 | 9A | 1 NO | 4kilovatios | 73×47×82 |
| CJX2‑1810 | 18A | 1 NO | 7.5kilovatios | 73×47×82 |
| CJX2‑2510 | 25A | 1 NO | 11kilovatios | 83×58×96 |
| CJX2‑3210 | 32A | 1 NO | 15kilovatios | 83×58×101 |
| CJX2‑4011 | 40A | 1 NO + 1 CAROLINA DEL NORTE | 18.5kilovatios | 128×79×116 |
| CJX2‑6511 | 65A | 1 NO + 1 CAROLINA DEL NORTE | 30kilovatios | 128×79×116 |
- Cross‑Brand Replacements
| Marca | Modelo de reemplazo | Compatibilidad |
| Schneider | LC1N3210M7N / LC1R3210M5N | Mismas dimensiones & parámetros |
| siemens | 3RT6035‑1AN20 (domestic type) | Funcionalmente equivalente, mounting compatible |
| TEJIDO | A145‑30‑11 (32A class) | Aux. can be configured as 1 NO |
| Delicioso | CJX2‑3210 | Fully interchangeable |
| Interruptor Changshu | CK3‑3210 | Same performance & parámetros |
- Selección & Notas de aplicación
- voltaje de la bobina: Selected per control circuit (commonly 220V / 380V).
- Cargar coincidencia: 32A ≈ 15kW at AC‑3 380V; avoid overload.
- Aux. contact expansion: F4‑11 or similar modules can be added.
- Protection coordination: Used with NR2 series thermal relays (p.ej. NR2‑36) for overload protection.
- Ambiente: Operating temperature ‑5°C ~ +40°C; avoid dust & corrosive gas.
Packing: 4 pcs/box, 32 pcs/carton
Comparison of CHINT Contactor Series
Overview:
CHINT contactors are divided into:
Classic (CJX2/CJ20/CJX8), Actualizado (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.
Prioridad: NXC / NC5; use special series for special applications.
- Posicionamiento en serie & Reemplazo
| Serie | Posicionamiento | Replaced By / Replaces | Características clave |
| CJX2 | Classic general | Fully replaced by NXC | Rentable, simple structure, flexible aux. contactos |
| NXC | Nueva generación | Reemplaza CJX2, upgraded | Alta eficiencia, larga vida, standard 1NO+1NC, strong modularity |
| NC5 | Elegante & premium | High‑end market | Wide temp ‑25°C~+55°C, comunicación, 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, bajo costo, civil & light industry |
| NXC‑XMG | Special load | Independent | For fans & zapatillas, high energy saving |
| CJZ8/NCZ5 | DC dedicated | Independent | Enhanced arc extinguishing, nueva energía & almacenamiento de energía |
- Parámetros técnicos clave
2.1 Basic Electrical Data
| Serie | Rango actual | Tensión nominal | AC‑3 380V Power | Auxiliar estándar. Contactos |
| CJX2 | 9~95A | Hasta 690V | 0.75kW~45kW | Below 32A: 1NO/1NC; ≥40A:1NO+1NC |
| NXC | 6~630A | Hasta 690V | 0.37kW~315kW | Full range: 1NO+1NC |
| NC5 | 6~630A | Hasta 690V | 0.37kW~315kW | 1NO+1NC, expandable to 6NO+6NC |
| NC8 | 6A~1000A | Hasta 690V | 0.37kilovatios~500kW | 2NO+2NC, expandable to 6NO+6NC |
| CJX8 | 9A~250A | Up to 660V | 4kW~110kW | 3NO+1NO/1NC or 4NO |
| CJ20 | 10~630A | Up to 660V | 5.5kW~315kW | 1NO+1NC |
2.2 Vida & Ambiente
| Serie | Vida mecánica | Vida eléctrica (AC‑3) | Operating Temp | Montaje |
| CJX2 | 10 millón | 1 millón | ‑5°C~+40°C | 35mm DIN / screw |
| NXC | 12 millón | 1.2 millón | ‑25°C~+55°C | 35mm DIN / screw |
| NC5 | 15 millón | 1.5 millón | ‑25°C~+55°C | 35mm DIN / screw |
| NC8 | 10 millón | 0.8 millón (high current) | ‑25°C~+55°C | Mainly screw |
| CJ20 | 8 millón | 0.8 millón | ‑5°C~+40°C | Tornillo |
- Estructura & Diferencias funcionales
3.1 CJX2 (Classic)
Estructura: Direct‑operated single break, modular; F4 aux., F5 timer, NCF1 side aux. disponible.
Contactos: aleación de plata, 3P main, flexible aux. (10/01/11).
Bobina: AC/DC, 24V~380V.
3.2 NXC (Actualizado)
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 & harsh environments.
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, alta resistencia a las vibraciones.
3.5 CJX8 (Traditional Heavy‑Duty)
Direct‑operated double break; front‑connected or rear‑connected versions.
Arriba a 4 polos (3 main + 1 aux or 4 main) for special applications.
3.6 Contactores 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 & almacenamiento de energía.
Dedicated DC arc extinguishing structure.
- Escenarios de aplicación
| Serie | Best For | Typical Load | No recomendado |
| CJX2 | Legacy retrofit, budget projects | Small motors ≤15kW, iluminación, calefacción | High‑end automation, harsh environments |
| NXC | Automatización industrial, new projects | Medium motors ≤315kW, fans, zapatillas | Ultra‑large motors, special DC loads |
| NC5 | Smart factories, complex systems, exterior | Medio & motores grandes, production lines | Cost‑sensitive simple circuits |
| NC8 | Large industry, fuerza, metalurgia | Large motors ≤500kW, transformadores | Small loads, civil buildings |
| CJX8 | Legacy maintenance, special control | Traditional machinery, special circuits | New smart projects |
| CJ20 | Civil, light industry, temporary power | AC units, zapatillas, small machines | Cambio frecuente, high‑end automation |
| DC series | New energy, almacenamiento de energía, rail | DC motors, batteries, cargadores | AC loads |
- Guía de selección & Reemplazos
5.1 Selection Priority
- New projects: NXC (replaces CJX2)
- Smart/complex systems: NC5
- Ultra‑high power >315kilovatios: NC8
- DC loads: CJZ8 / NCZ5
- Legacy retrofit: CJX2/CJ20/CJX8 or upgrade to NXC/NC5
5.2 Cross‑Series Replacement
| Original | Reemplazo recomendado | Ventaja |
| 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, easier maintenance |
| CJX8‑09~250 | NC8‑06~250 | Better arc extinguishing, wide temperature |
5.3 Model Selection Tips
Actual: 32A ≈ 15kW; 63A ≈ 30kW; 100A ≈ 45kW at AC‑3 380V.
Aux. contactos: NXC has 1NO+1NC standard; CJX2 uses 10/01/11.
Bobina: 220V/380V/110V/36V/24V AC/DC.
Montaje: 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 SIN contactos principales + 1 SIN contacto 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 de la serie Kunlun de CHINT Electric es un contactor de CA de 3 polos, nominal de 65 A en la serie NXC. El modelo completo normalmente se expresa como NXC-65 [Voltaje de la bobina] [Frecuencia]")
