CHINT CJX2-3210 AC-Schütz

CJX2-3210 is a 3-pole 32A AC-Schütz from CHINT CJX2 series, mit 3 NO main poles + 1 KEIN Hilfskontakt.

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, usw.

Modellerklärung & Basic Positioning

Modellteil	Bedeutung
CJX2	CHINT AC contactor series (equivalent to Schneider LC1‑D series)
32	Rated operational current 32A (AC‑3 utilization category at 400V)
10	Hilfskontakte: 1 NEIN + 0 NC

Produktpositionierung:

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.

Wichtige technische Parameter

Artikel	Spezifikation
Nennbetriebsspannung	Bis zu 690 V Wechselstrom (50/60Hz)
Bemessungsbetriebsstrom	32A (AC‑3 400V), thermal current Ith = 50A
Controlled power	15kW (AC‑3 380V), 21A (AC‑3 660V)
Hilfskontakt	1 NEIN, rated 5A/220V AC
Coil voltage	Optional: 220V/380V/110V/36V/24V AC
Insulation characteristics	UI = 660V, compliant with GB14048.4 / IEC60947‑4‑1
Mechanisch / elektrische Lebensdauer	10 Millionen Mal / 1 Millionen Mal (AC‑3)
Abmessungen (L×W×H)	83×58×101 mm
Montage	Standardmäßige 35-mm-DIN-Schiene

Strukturelle Merkmale & Materialien
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, verbessert die Sicherheit.
Clear side marking: Modell, Stromspannung, CCC-Zertifizierung, usw.
Anwendungen
Industrielle Automatisierung: Motorsteuerung, Fans, Pumps, Kompressoren.
Gebäudeelektrik: HVAC, Feuerlöschpumpen, exhaust fans.
Agricultural machinery: Irrigation, feed processing equipment.
Energiesysteme: Remote circuit control in distribution panels.
Typical matching: Long‑running oil station motors, unidirectional equipment (no NC auxiliary required).
Comparison Within CJX2 Series

Modell	Nennstrom	Aux. Kontakte	AC‑3 380V Power	Abmessungen (mm)
CJX2‑0910	9A	1 NEIN	4kW	73×47×82
CJX2‑1810	18A	1 NEIN	7.5kW	73×47×82
CJX2‑2510	25A	1 NEIN	11kW	83×58×96
CJX2‑3210	32A	1 NEIN	15kW	83×58×101
CJX2‑4011	40A	1 NEIN + 1 NC	18.5kW	128×79×116
CJX2‑6511	65A	1 NEIN + 1 NC	30kW	128×79×116

Cross‑Brand Replacements

Marke	Ersatzmodell	Kompatibilität
Schneider	LC1N3210M7N / LC1R3210M5N	Gleiche Abmessungen & Parameter
Siemens	3RT6035‑1AN20 (domestic type)	Funktionell gleichwertig, mounting compatible
ABB	A145‑30‑11 (32A class)	Aux. can be configured as 1 NEIN
Lecker	CJX2‑3210	Fully interchangeable
Changshu-Schalter	CK3‑3210	Same performance & Parameter

Auswahl & Anwendungshinweise
Coil voltage: Selected per control circuit (commonly 220V / 380V).
Ladeabgleich: 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 (z.B. NR2‑36) for overload protection.
Umfeld: Operating temperature ‑5°C ~ +40°C; avoid dust & ätzendes Gas.

Packing: 4 pcs/box, 32 pcs/carton

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.

Priorität: NXC / NC5; use special series for special applications.

Series Positioning & Ersatz

Serie	Positionierung	Replaced By / Replaces	Hauptmerkmale
CJX2	Classic general	Fully replaced by NXC	Cost‑effective, simple structure, flexible aux. Kontakte
NXC	New generation	Replaces CJX2, upgraded	Hohe Effizienz, long life, standard 1NO+1NC, strong modularity
NC5	Smart & Prämie	High‑end market	Wide temp ‑25°C~+55°C, Kommunikation, 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, niedrige Kosten, civil & light industry
NXC‑XMG	Special load	Independent	For fans & Pumps, high energy saving
CJZ8/NCZ5	DC dedicated	Independent	Enhanced arc extinguishing, new energy & Energiespeicher

Wichtige technische Parameter

2.1 Basic Electrical Data

Serie	Aktueller Bereich	Nennspannung	AC‑3 380V Power	Standard Aux. Kontakte
CJX2	9A~95A	Up to 690V	0.75kW~45kW	Below 32A: 1NO/1NC; ≥40A:1NO+1NC
NXC	6A~630A	Up to 690V	0.37kW~315kW	Volles Sortiment: 1NO+1NC
NC5	6A~630A	Up to 690V	0.37kW~315kW	1NO+1NC, expandable to 6NO+6NC
NC8	6A~1000A	Up to 690V	0.37kW~500kW	2NO+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	1NO+1NC

2.2 Life & Umfeld

Serie	Mechanisches Leben	Elektrisches Leben (AC‑3)	Operating Temp	Montage
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 (hoher Strom)	‑25°C~+55°C	Mainly screw
CJ20	8 million	0.8 million	‑5°C~+40°C	Screw

Struktur & Functional Differences

3.1 CJX2 (Classic)

Struktur: Direct‑operated single break, modular; F4 aux., F5 timer, NCF1 side aux. verfügbar.

Kontakte: Silberlegierung, 3P main, flexible aux. (10/01/11).

Spule: 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, usw.) for IIoT.

Wide temperature, suitable for outdoor & raue Umgebungen.

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.

Bis zu 4 Stangen (3 hauptsächlich + 1 aux or 4 hauptsächlich) 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 & Energiespeicher.

Dedicated DC arc extinguishing structure.

Anwendungsszenarien

Serie	Best For	Typische Belastung	Nicht empfohlen
CJX2	Legacy retrofit, Budgetprojekte	Small motors ≤15kW, Beleuchtung, Heizung	High‑end automation, raue Umgebungen
NXC	Industrielle Automatisierung, new projects	Medium motors ≤315kW, Fans, Pumps	Ultra‑large motors, special DC loads
NC5	Smart factories, complex systems, im Freien	Medium & large motors, Produktionslinien	Cost‑sensitive simple circuits
NC8	Large industry, Leistung, Metallurgie	Large motors ≤500kW, Transformatoren	Small loads, zivile Gebäude
CJX8	Legacy maintenance, special control	Traditional machinery, special circuits	New smart projects
CJ20	Bürgerlich, light industry, temporary power	AC units, Pumps, small machines	Häufiges Wechseln, high‑end automation
DC series	New energy, Energiespeicher, Schiene	DC motors, batteries, Ladegeräte	AC loads

Auswahlhilfe & Ersatz

5.1 Selection Priority

Neue Projekte: 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	Empfohlener Ersatz	Vorteil
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

Aktuell: 32A ≈ 15kW; 63A ≈ 30kW; 100A ≈ 45kW at AC‑3 380V.

Aux. Kontakte: NXC has 1NO+1NC standard; CJX2 uses 10/01/11.

Spule: 220V/380V/110V/36V/24V AC/DC.

Montage: 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 NO main contacts + 1 KEIN Hilfskontakt, 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)