Contactor AC CHINT CJX2-3210

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	Up to 690V AC (50/60Hz)
Rated operational current	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
Mechanical / viata electrica	10 de milioane de ori / 1 de milioane de ori (AC‑3)
Dimensiuni (L×W×H)	83×58×101 mm
Montare	Sina DIN standard de 35 mm

Caracteristici structurale & Materials
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, fire pumps, exhaust fans.
Agricultural machinery: Irrigation, feed processing equipment.
Power systems: 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	Aux. 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, mounting compatible
ABB	A145‑30‑11 (32A class)	Aux. can be configured as 1 NU
Delicios	CJX2‑3210	Fully interchangeable
Comutator Changshu	CK3‑3210	Same performance & parametrii

Selecţie & Note de aplicare
Tensiunea bobinei: Selected per control circuit (commonly 220V / 380V).
Potrivirea încărcării: 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 (de ex. NR2‑36) for overload protection.
Mediu: Operating temperature ‑5°C ~ +40°C; avoid dust & gaz corosiv.

Packing: 4 pcs/box, 32 pcs/carton

Comparison of CHINT Contactor Series

Overview:

CHINT contactors are divided into:

Clasic (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.

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, long life, standard 1NO+1NC, strong modularity
NC5	Smart & 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, low cost, civil & light industry
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	Standard Aux. 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	Full range: 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)	Operating Temp	Montare
CJX2	10 million	1 million	‑5°C~+40°C	35mm DIN / screw
NXC	12 million	1.2 million	‑25°C~+55°C	35mm DIN / screw
NC5	15 million	1.5 million	‑25°C~+55°C	35mm DIN / screw
NC8	10 million	0.8 million (curent mare)	‑25°C~+55°C	Mainly screw
CJ20	8 million	0.8 million	‑5°C~+40°C	Screw

Structura & Functional Differences

3.1 CJX2 (Clasic)

Structura: Direct‑operated single break, modulare; F4 aux., F5 timer, NCF1 side aux. available.

Contacte: Silver alloy, 3P main, flexible aux. (10/01/11).

Bobina: AC/DC, 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 & 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, 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	Typical Load	Not Recommended
CJX2	Legacy retrofit, budget projects	Small motors ≤15kW, iluminat, încălzire	High‑end automation, harsh environments
NXC	Automatizare industrială, new projects	Medium motors ≤315kW, fani, pompe	Ultra‑large motors, special DC loads
NC5	Smart factories, complex systems, outdoor	Mediu & motoare mari, production lines	Cost‑sensitive simple circuits
NC8	Large industry, putere, metallurgy	Large motors ≤500kW, transformatoare	Small loads, civil buildings
CJX8	Legacy maintenance, special control	Traditional machinery, special circuits	New smart projects
CJ20	Civil, light industry, temporary power	unități AC, pompe, small machines	Frequent switching, high‑end automation
DC series	New energy, energy storage, rail	DC motors, batteries, încărcătoare	AC loads

Ghid de selecție & Replacements

5.1 Selection Priority

New projects: 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	Recommended Replacement	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, easier maintenance
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.

Aux. 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)