Contactor,întrerupător de circuit,invertor solar,contor electric,baterii solare
CJX2-3210 is a 3-pole 32A contactor AC from CHINT CJX2 series, cu 3 NO main poles + 1 FĂRĂ contact 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.
- Explicația modelului & Basic Positioning
| Partea modelului | Sens |
| CJX2 | CHINT AC contactor series (equivalent to Schneider LC1‑D series) |
| 32 | Rated operational current 32A (AC‑3 utilization category at 400V) |
| 10 | Contacte auxiliare: 1 NU + 0 NC |
Poziționarea produsului:
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.
- Parametrii tehnici cheie
| Articol | Caietul de sarcini |
| Tensiune nominală de funcționare | Până la 690 V AC (50/60Hz) |
| Curent nominal de funcționare | 32O (AC‑3 400V), thermal current Ith = 50A |
| Controlled power | 15kW (AC‑3 380V), 21O (AC‑3 660V) |
| Contact auxiliar | 1 NU, rated 5A/220V AC |
| Tensiunea bobinei | Opțional: 220V/380V/110V/36V/24V AC |
| Insulation characteristics | UI = 660V, compliant with GB14048.4 / IEC60947‑4‑1 |
| Mecanic / viata electrica | 10 de milioane de ori / 1 de milioane de ori (AC-3) |
| Dimensiuni (L×L×A) | 83×58×101 mm |
| Montare | Sina DIN standard de 35 mm |
- Caracteristici structurale & Materiale
- Contacte din aliaj de argint: 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: Model, Voltaj, Certificare CCC, etc.
- Aplicații
- Automatizare industrială: Controlul motorului, fani, pompe, compresoare.
- Electrice clădirii: HVAC, pompe de incendiu, exhaust fans.
- Agricultural machinery: Irrigation, feed processing equipment.
- Sisteme de alimentare: Remote circuit control in distribution panels.
- Typical matching: Long‑running oil station motors, unidirectional equipment (no NC auxiliary required).
- Comparison Within CJX2 Series
| Model | Curent nominal | La. Contacte | AC‑3 380V Power | Dimensiuni (mm) |
| CJX2‑0910 | 9O | 1 NU | 4kW | 73×47×82 |
| CJX2‑1810 | 18O | 1 NU | 7.5kW | 73×47×82 |
| CJX2‑2510 | 25O | 1 NU | 11kW | 83×58×96 |
| CJX2‑3210 | 32O | 1 NU | 15kW | 83×58×101 |
| CJX2‑4011 | 40O | 1 NU + 1 NC | 18.5kW | 128×79×116 |
| CJX2‑6511 | 65O | 1 NU + 1 NC | 30kW | 128×79×116 |
- Cross‑Brand Replacements
| Marca | Model de înlocuire | Compatibilitate |
| Schneider | LC1N3210M7N / LC1R3210M5N | Aceleași dimensiuni & parametrii |
| Siemens | 3RT6035‑1AN20 (domestic type) | Echivalent din punct de vedere funcțional, compatibil cu montaj |
| ABB | A145‑30‑11 (32A class) | La. can be configured as 1 NU |
| Delicios | CJX2‑3210 | Fully interchangeable |
| Comutator Changshu | CK3‑3210 | Aceeași performanță & parametrii |
- Selecţie & Note de aplicare
- Tensiunea bobinei: Selected per control circuit (commonly 220V / 380V).
- Potrivirea încărcării: 32A ≈ 15kW at AC‑3 380V; avoid overload.
- La. extinderea contactului: F4‑11 or similar modules can be added.
- Protection coordination: Used with NR2 series thermal relays (de ex. NR2‑36) for overload protection.
- Mediu: Operating temperature ‑5°C ~ +40°C; evita praful & gaz corosiv.
Ambalare: 4 buc/cutie, 32 buc/cutie
Comparison of CHINT Contactor Series
Prezentare generală:
CHINT contactors are divided into:
Clasic (CJX2/CJ20/CJX8), Actualizat (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.
Prioritate: NXC / NC5; use special series for special applications.
- Poziționarea în serie & Înlocuire
| Serie | Poziționare | Replaced By / Replaces | Caracteristici cheie |
| CJX2 | Classic general | Fully replaced by NXC | Eficient din punct de vedere al costurilor, simple structure, flexible aux. contacte |
| NXC | Noua generatie | Replaces CJX2, upgraded | High efficiency, viata lunga, standard 1NO+1NC, strong modularity |
| NC5 | Inteligent & premium | High‑end market | Wide temp ‑25°C~+55°C, comunicare, complex automation |
| NC8 | High‑power heavy‑duty | Independent, up to 1000A | Up to 1000A AC‑3 415V, for large motors & industria grea |
| 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, cost scăzut, civil & industria ușoară |
| NXC‑XMG | Special load | Independent | For fans & pompe, high energy saving |
| CJZ8/NCZ5 | DC dedicated | Independent | Enhanced arc extinguishing, new energy & energy storage |
- Parametrii tehnici cheie
2.1 Basic Electrical Data
| Serie | Interval de curent | Tensiune nominală | AC‑3 380V Power | Aux standard. Contacte |
| CJX2 | 9A~95A | Up to 690V | 0.75kW~45kW | Below 32A: 1NO/1NC; ≥40A:1NU+1NC |
| NXC | 6A~630A | Up to 690V | 0.37kW~315kW | Gamă completă: 1NU+1NC |
| NC5 | 6A~630A | Up to 690V | 0.37kW~315kW | 1NU+1NC, expandable to 6NO+6NC |
| NC8 | 6A~1000A | Up to 690V | 0.37kW~500kW | 2NU+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 | 1NU+1NC |
2.2 Life & Mediu
| Serie | Viața mecanică | Viața electrică (AC-3) | Temp. de operare | Montare |
| CJX2 | 10 milion | 1 milion | ‑5°C~+40°C | 35mm DIN / şurub |
| NXC | 12 milion | 1.2 milion | ‑25°C~+55°C | 35mm DIN / şurub |
| NC5 | 15 milion | 1.5 milion | ‑25°C~+55°C | 35mm DIN / şurub |
| NC8 | 10 milion | 0.8 milion (curent mare) | ‑25°C~+55°C | Mainly screw |
| CJ20 | 8 milion | 0.8 milion | ‑5°C~+40°C | Şurub |
- Structura & Diferențele funcționale
3.1 CJX2 (Clasic)
Structura: Direct‑operated single break, modulare; F4 aux., F5 timer, NCF1 side aux. available.
Contacte: Aliaj de argint, 3P main, flexible aux. (10/01/11).
Bobina: AC/DC, 24V~380V.
3.2 NXC (Actualizat)
Optimized magnetic system, coil power ≈ 30% lower than CJX2.
Improved silver alloy contacts, better arc extinguishing.
Standard 1NO+1NC; supports aux., cronometrul, mechanical interlock.
3.3 NC5 (Smart Premium)
Modul de comunicare opțional (Modbus, etc.) for IIoT.
Temperatura largă, suitable for outdoor & medii dure.
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, rezistență ridicată la vibrații.
3.5 CJX8 (Traditional Heavy‑Duty)
Direct‑operated double break; front‑connected or rear‑connected versions.
Până la 4 stâlpi (3 main + 1 aux or 4 main) for special applications.
3.6 DC Contactors
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.
- Scenarii de aplicare
| Serie | Best For | Sarcina tipică | Nerecomandat |
| CJX2 | Legacy retrofit, budget projects | Small motors ≤15kW, iluminat, încălzire | High‑end automation, medii dure |
| NXC | Automatizare industrială, new projects | Medium motors ≤315kW, fani, pompe | Ultra‑large motors, special DC loads |
| NC5 | Smart factories, complex systems, în aer liber | Mediu & motoare mari, linii de producție | Cost‑sensitive simple circuits |
| NC8 | Large industry, putere, metalurgie | Large motors ≤500kW, transformatoare | Small loads, civil buildings |
| CJX8 | Legacy maintenance, special control | Traditional machinery, special circuits | New smart projects |
| CJ20 | Civil, industria ușoară, temporary power | unități AC, pompe, small machines | Frequent switching, high‑end automation |
| DC series | Energie nouă, energy storage, șină | DC motors, batteries, încărcătoare | AC loads |
- Ghid de selecție & Înlocuitori
5.1 Prioritate de selecție
- Proiecte noi: 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 | Înlocuire recomandată | Avantaj |
| CJX2‑09~95 | NXC‑06~100 | Standard 1NO+1NC, life +20%, power ‑30% |
| CJ20‑10~630 | NXC‑12~630 / NC8‑12~1000 | Better performance, modulare, întreținere mai ușoară |
| CJX8‑09~250 | NC8‑06~250 | Better arc extinguishing, temperatură largă |
5.3 Model Selection Tips
Actual: 32A ≈ 15kW; 63A ≈ 30kW; 100A ≈ 45kW at AC‑3 380V.
La. contacte: NXC has 1NO+1NC standard; CJX2 uses 10/01/11.
Bobina: 220V/380V/110V/36V/24V AC/DC.
Montare: 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 FĂRĂ contacte principale + 1 FĂRĂ contact 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)
