Contactor,întrerupător de circuit,invertor solar,contor electric,baterii solare
Poziționarea de bază: The Chint CJX2-9511 is a 3-pole contactor AC with a rated current of 95A, echipat cu 1 deschis în mod normal (NU) + 1 în mod normal închis (NC) contact auxiliar. It is suitable for AC 50/60Hz circuits, mainly used for remote switching on/off of circuits, frequent starting and control of three-phase AC motors. It can be combined with a thermal overload relay to form an electromagnetic starter for overload protection.
- Interpretarea modelului
| Segmentul de model | Sens |
| CJX2 | Chint AC contactor series code (equivalent and compatible with Schneider LC1D series) |
| 95 | Rated operating current of 95A (under AC-3 utilization category at 400V) |
| 11 | Configurarea contactelor auxiliare: 1 Deschis normal (NU) + 1 În mod normal închis (NC) |
- Parametrii tehnici de bază
| Element de parametru | Specification Details |
| Contactor Type | AC coil contactor, 3-contactele principale ale polului + 1NU + 1Contacte auxiliare NC |
| Tensiune nominală de operare | Circuitul principal: AC 50/60Hz, up to 690V |
| Curent nominal de operare | 95A la AC-3, 400V; 132A at AC-1, 400V |
| Opțiuni de tensiune bobină | AC 24V/36V/110V/220V/380V, compatible with 50/60Hz |
| Consumul de energie al bobinei | Pull-in power approx. 1800VA, holding power approx. 180VA |
| Tensiune nominală de izolație | 800V (complies with IEC 60947-4-1 standard) |
| Tensiune nominală de rezistență la impuls | 8kV |
| Viața mecanică | Aproximativ 10 milioane de operațiuni |
| Viața electrică | Aproximativ 1 million operations at AC-3, 400V, 95O |
| Frecvența nominală de operare | Până la 1200 operațiuni pe oră (AC-3 utilization category) |
| Tensiunea circuitului de control | Coil voltage range: 85%~110% din tensiunea nominală |
| Metoda de montare | Montare pe șină DIN (35mm șină standard) sau fixare cu șuruburi |
| Metoda de cablare | Double-hole terminal blocks, main circuit applicable wire cross-section: 16~35mm² |
| Temperatura de operare | -5°C ~ +40°C (can reach +40°C when relative humidity ≤50%, derating required at higher humidity) |
| Clasa de protectie | IP20 (protects against finger contact and solid foreign objects with diameter ≥12mm) |
| Greutate | Approximately 1.2kg |
III. Caracteristici funcționale
- High Compatibility Design: Same dimensions as Schneider LC1D series, directly interchangeable, compatible with various functional accessories
- High-efficiency Energy-saving Coil: Adopts high-quality electromagnetic materials, pull-in/holding power ratio up to 10:1, with significant energy-saving effect
- Mecanisme de protecție multiple:
Built-in overvoltage suppressor in the coil to extend coil service life
Main contacts made of silver alloy material, arc-resistant and anti-welding, improving reliability
Dust cover design, potrivit pentru medii industriale dure
- Flexible Wiring System: Double-hole terminal block design, more secure wiring, reducing loosening risk
- Adaptabilitate largă la tensiune: Wide coil voltage range (85%~110%), adapting to power grid fluctuations
- Instalare ușoară: Montare standard pe șină DIN, space-saving and convenient for quick replacement
- Domeniul de aplicare
The CJX2-9511 contactor is suitable for the following industrial scenarios:
- Controlul motorului:
Direct start/stop control of three-phase asynchronous motors (aproximativ. 45kW at 380V)
Control of continuous operation equipment such as fans, pompe de apa si compresoare
Control of frequent starting equipment such as conveyors and mixers
- Electrical Control Systems:
Remote switching on/off of circuits in power distribution systems
Control of electric heating equipment and lighting systems
Combinat cu relee termice de suprasarcină (de ex., seria NR2) to form electromagnetic starters for overload protection
- Automatizare industrială:
Executive component of PLC control systems
Bypass contactor for soft starters and frequency converters
Electrical control of machine tools, printing machinery and packaging equipment
- Recomandări de selecție
5.1 Puncte cheie de selecție
| Selection Factor | Recommended Considerations |
| Tip de încărcare | Select AC-3 rated current for motor loads; select AC-1 rated current for resistive loads |
| Potrivirea puterii | Can control ≤45kW three-phase asynchronous motors at 380V (AC-3) |
| Tensiunea bobinei | Select according to control circuit power supply (220V/380V utilizat în mod obișnuit, 24V/36V/110V optional for special occasions) |
| Contacte auxiliare | 1NO+1NC meets basic control needs; auxiliary contact modules can be added for more contacts |
| Frecvența de operare | For frequent operation (>600 ori/oră), derating is recommended or special high-frequency contactors should be selected |
| Condiții de mediu | For high-temperature, humid and dusty environments, derating or protection class upgrade should be considered |
5.2 Modele alternative și compatibilitate
| Model alternativ | Marca | Descrierea diferenței | Compatibilitate |
| NXC-9511 | Chint (Seria Kunlun) | Upgraded version of CJX2 series with improved performance and compatible dimensions | Complet compatibil, can be directly replaced |
| LC1D9511 | Schneider | Original design with consistent performance | Installation and electrically compatible, interchangeable |
| TGC1-9511 | Tengen | Same specification product with more competitive price | Installation compatible, consistent functions |
| CJX2-9501/9510 | Chint | Different auxiliary contact configurations (01: 1NC; 10: 1NU) | Consistent main circuit parameters, different auxiliary contacts |
5.3 Recommended Supporting Products
- Releu termic de suprasarcina: NR2-93 (setting current 63~93A), directly pluggable with CJX2-9511 to form an electromagnetic starter
- Protecție la suprasarcină: Motor protectors (de ex., JD-5) can be optionally configured for more comprehensive protection
- Extindere contact auxiliar: Auxiliary contact modules such as F4-11 and F4-22 to increase the number of contacts
- Surge Suppression: RC snubber or varistor to protect coils and contacts
- Ghid de depanare
6.1 Defecte comune și soluții
| Fenomen de eroare | Cauze posibile | Pași de depanare |
| Contactorul nu reușește să tragă | 1. Coil not powered; 2. Tensiune scăzută a bobinei; 3. Colac ars; 4. Blocaj mecanic | 1. Check control circuit power supply and wiring; 2. Măsurați tensiunea bobinei (should be ≥85% of rated value); 3. Măsurați rezistența bobinei cu multimetrul (normal value approx. several hundred ohms); 4. Check if iron core is jammed and remove foreign objects |
| Zgomot puternic după tragere | 1. Oil/dust on iron core end face; 2. Broken shading coil; 3. Tensiune scăzută a bobinei | 1. Curățați partea de capăt a miezului de fier; 2. Check shading coil (replace iron core if broken); 3. Adjust coil voltage to rated range |
| Supraîncălzirea/ablația contactului | 1. Operare la suprasarcină; 2. Poor contact connection; 3. Arc suppression failure | 1. Check load current and replace with contactor of larger capacity; 2. Clean contacts and replace if severely ablated; 3. Check arc chute and ensure it is intact |
| Poor auxiliary contact connection | 1. Oxidare de contact; 2. Spring fatigue; 3. Cabluri slăbite | 1. Curățați contactele; 2. Înlocuiți modulul de contact auxiliar; 3. Strângeți bornele cablajului |
| Arsarea bobinei | 1. Excessively high voltage; 2. Pornire frecventă; 3. Temperatura ambientală ridicată | 1. Check power supply voltage and install overvoltage protection; 2. Reduce starting frequency or select high-frequency contactor; 3. Îmbunătățiți ventilația și reduceți temperatura ambiantă |
6.2 Contactor Status Judgment
| Articol de inspecție | Stare normală | Abnormality Judgment |
| Rezistența bobinei | Aproximativ. 300~800Ω (depending on coil voltage) | Resistance of 0 (scurt-circuit) sau infinit (circuit deschis) is abnormal |
| Main Contact Voltage Drop | ≤50mV when closed | Excessively high voltage drop indicates poor contact connection |
| Iron Core Pull-in | No obvious noise and slight vibration | Loud noise and obvious vibration are abnormal |
| Arc Chute | Intact without carbonization marks | Severe damage or carbonization requires replacement |
VII. Installation and Maintenance Precautions
- Pregătirea înainte de instalare:
Confirm that the model matches the load (actual, Voltaj, contacte auxiliare)
Check for no external damage and complete accessories (arc chute, suport de montare)
Select appropriate installation location (bine ventilat, away from heat sources and vibration sources)
- Specificații de instalare:
Install after power cut, operarea în direct este strict interzisă
Montare standard pe șină DIN (35mm), fix firmly
Cablajul circuitului principal: wire cross-section 16~35mm², double-hole wiring to ensure firm connection
Cablajul circuitului de control: wire cross-section 0.75~1.5mm², avoid laying in the same slot as main circuit
Direcția de instalare: vertical installation (iron core upward), tilt ≤5°
- Puncte cheie de întreținere:
Inspecție regulată (recommended once a month):
Starea contactului (presence of ablation and oxidation)
Temperatura bobinei (should not exceed ambient temperature +40°C)
Borne de cablare (presence of loosening and overheating)
Arc chute (presence of damage and carbonization)
Curatenie: Remove dust with dry brush, solvent use is prohibited
Lubrifiere: Oil application is prohibited on iron core end face, keep clean and dry
Replacement Cycle:
Durata de viata mecanica: aproximativ. 10 milioane de operațiuni, replacement is recommended after reaching the limit
Durata de viata electrica: aproximativ. 1 milioane de operațiuni (AC-3), replacement cycle should be shortened for frequent starting
VIII. Rezumat
The Chint CJX2-9511 contactor is an industrial-grade contactor with high cost performance and high compatibility. With its 95A rated current and 1NO+1NC auxiliary contact configuration, it is widely used in the control of three-phase motors below 45kW and electrical systems. În timpul selecției, comprehensive consideration should be given to factors such as load type, power and coil voltage. Installation and maintenance must strictly follow specifications to ensure safe and reliable operation. Compared with the Kunlun series NXC-9511, the CJX2-9511 has a more competitive price; compared with the Schneider LC1D9511, it has higher cost performance, making it an ideal choice in the field of industrial automation.
