Schütz,Leistungsschalter,Solarwechselrichter,Stromzähler,Solarbatterien
Kernpositionierung: The Chint CJX2-9511 is a 3-pole AC-Schütz with a rated current of 95A, ausgestattet mit 1 normalerweise offen (NEIN) + 1 normalerweise geschlossen (NC) Hilfskontakt. 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.
- Modellinterpretation
| Modellsegment | Bedeutung |
| 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 | Hilfskontaktkonfiguration: 1 Normalerweise geöffnet (NEIN) + 1 Normalerweise geschlossen (NC) |
- Technische Kernparameter
| Parameterelement | Specification Details |
| Contactor Type | AC coil contactor, 3-Polhauptkontakte + 1NEIN + 1NC-Hilfskontakte |
| Nennbetriebsspannung | Hauptstromkreis: Wechselstrom 50/60 Hz, bis 690V |
| Nennbetriebsstrom | 95A at AC-3, 400V; 132A at AC-1, 400V |
| Spulenspannungsoptionen | AC 24V/36V/110V/220V/380V, kompatibel mit 50/60Hz |
| Spulenstromverbrauch | Pull-in power approx. 1800VA, Haltekraft ca. 180VA |
| Bemessungsisolationsspannung | 800V (entspricht IEC 60947-4-1 Standard) |
| Bewertete Stoßspannungsfestigkeit | 8kV |
| Mechanisches Leben | Etwa 10 Millionen Operationen |
| Elektrisches Leben | Etwa 1 million operations at AC-3, 400V, 95A |
| Nennbetriebsfrequenz | Bis zu 1200 Operationen pro Stunde (Nutzungskategorie AC-3) |
| Steuerstromkreisspannung | Spulenspannungsbereich: 85%~110 % der Nennspannung |
| Montagemethode | DIN-Schienenmontage (35mm Normschiene) or screw fixing |
| Verkabelungsmethode | Double-hole terminal blocks, main circuit applicable wire cross-section: 16~35mm² |
| Betriebstemperatur | -5°C ~ +40°C (can reach +40°C when relative humidity ≤50%, derating required at higher humidity) |
| Schutzklasse | IP20 (protects against finger contact and solid foreign objects with diameter ≥12mm) |
| Gewicht | Approximately 1.2kg |
III. Funktionsmerkmale
- 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
- Mehrere Schutzmechanismen:
Built-in overvoltage suppressor in the coil to extend coil service life
Main contacts made of silver alloy material, lichtbogenbeständig und schweißhemmend, improving reliability
Dust cover design, geeignet für raue Industrieumgebungen
- Flexible Wiring System: Double-hole terminal block design, more secure wiring, reducing loosening risk
- Große Spannungsanpassungsfähigkeit: Wide coil voltage range (85%~110 %), adapting to power grid fluctuations
- Einfache Installation: Standard-DIN-Schienenmontage, space-saving and convenient for quick replacement
- Anwendungsbereich
The CJX2-9511 contactor is suitable for the following industrial scenarios:
- Motorsteuerung:
Direct start/stop control of three-phase asynchronous motors (ca. 45kW at 380V)
Control of continuous operation equipment such as fans, water pumps and compressors
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
Kombiniert mit thermischen Überlastrelais (z.B., NR2-Serie) to form electromagnetic starters for overload protection
- Industrielle Automatisierung:
Executive component of PLC control systems
Bypass contactor for soft starters and frequency converters
Electrical control of machine tools, printing machinery and packaging equipment
- Auswahlempfehlungen
5.1 Wichtige Auswahlpunkte
| Auswahlfaktor | Recommended Considerations |
| Lasttyp | Select AC-3 rated current for motor loads; select AC-1 rated current for resistive loads |
| Leistungsanpassung | Can control ≤45kW three-phase asynchronous motors at 380V (AC-3) |
| Spulenspannung | Select according to control circuit power supply (220V/380V häufig verwendet, 24V/36V/110V optional for special occasions) |
| Hilfskontakte | 1NO+1NC meets basic control needs; auxiliary contact modules can be added for more contacts |
| Betriebsfrequenz | For frequent operation (>600 Zeiten/Stunde), derating is recommended or special high-frequency contactors should be selected |
| Umgebungsbedingungen | For high-temperature, humid and dusty environments, derating or protection class upgrade should be considered |
5.2 Alternative Modelle und Kompatibilität
| Alternatives Modell | Marke | Differenzbeschreibung | Kompatibilität |
| NXC-9511 | Chint (Kunlun-Serie) | Upgraded version of CJX2 series with improved performance and compatible dimensions | Vollständig kompatibel, can be directly replaced |
| LC1D9511 | Schneider | Original design with consistent performance | Installation and electrically compatible, interchangeable |
| TGC1-9511 | Rechts | Same specification product with more competitive price | Installation compatible, consistent functions |
| CJX2-9501/9510 | Chint | Different auxiliary contact configurations (01: 1NC; 10: 1NEIN) | Consistent main circuit parameters, different auxiliary contacts |
5.3 Recommended Supporting Products
- Thermisches Überlastrelais: NR2-93 (setting current 63~93A), directly pluggable with CJX2-9511 to form an electromagnetic starter
- Überlastschutz: Motor protectors (z.B., JD-5) can be optionally configured for more comprehensive protection
- Auxiliary Contact Expansion: Auxiliary contact modules such as F4-11 and F4-22 to increase the number of contacts
- Überspannungsunterdrückung: RC snubber or varistor to protect coils and contacts
- Leitfaden zur Fehlerbehebung
6.1 Häufige Fehler und Lösungen
| Fehlerphänomen | Mögliche Ursachen | Schritte zur Fehlerbehebung |
| Schütz zieht nicht an | 1. Coil not powered; 2. Niedrige Spulenspannung; 3. Durchgebrannte Spule; 4. Mechanische Blockierung | 1. Check control circuit power supply and wiring; 2. Measure coil voltage (should be ≥85% of rated value); 3. Measure coil resistance with multimeter (normal value approx. several hundred ohms); 4. Check if iron core is jammed and remove foreign objects |
| Lautes Geräusch nach dem Einfahren | 1. Oil/dust on iron core end face; 2. Broken shading coil; 3. Niedrige Spulenspannung | 1. Clean iron core end face; 2. Check shading coil (replace iron core if broken); 3. Adjust coil voltage to rated range |
| Kontaktüberhitzung/-ablation | 1. Überlastbetrieb; 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. Kontaktoxidation; 2. Spring fatigue; 3. Lose Verkabelung | 1. Kontakte reinigen; 2. Replace auxiliary contact module; 3. Tighten wiring terminals |
| Durchbrennen der Spule | 1. Excessively high voltage; 2. Häufiges Starten; 3. Hohe Umgebungstemperatur | 1. Check power supply voltage and install overvoltage protection; 2. Reduce starting frequency or select high-frequency contactor; 3. Verbessern Sie die Belüftung und senken Sie die Umgebungstemperatur |
6.2 Contactor Status Judgment
| Inspection Item | Normal Status | Abnormality Judgment |
| Spulenwiderstand | Ca. 300~800Ω (depending on coil voltage) | Resistance of 0 (Kurzschluss) oder Unendlichkeit (offener Stromkreis) 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
- Vorbereitung vor der Installation:
Confirm that the model matches the load (aktuell, Stromspannung, Hilfskontakte)
Check for no external damage and complete accessories (arc chute, Montagehalterung)
Select appropriate installation location (gut belüftet, von Wärmequellen und Vibrationsquellen fernhalten)
- Installationsspezifikationen:
Install after power cut, Live-Betrieb ist strengstens untersagt
Standard-DIN-Schienenmontage (35mm), fix firmly
Verkabelung des Hauptstromkreises: wire cross-section 16~35mm², double-hole wiring to ensure firm connection
Verkabelung des Steuerkreises: wire cross-section 0.75~1.5mm², avoid laying in the same slot as main circuit
Installation direction: vertical installation (iron core upward), tilt ≤5°
- Wichtige Wartungspunkte:
Regelmäßige Inspektion (recommended once a month):
Contact status (presence of ablation and oxidation)
Spulentemperatur (should not exceed ambient temperature +40°C)
Verdrahtungsklemmen (presence of loosening and overheating)
Arc chute (presence of damage and carbonization)
Reinigung: Remove dust with dry brush, solvent use is prohibited
Schmierung: Oil application is prohibited on iron core end face, keep clean and dry
Austauschzyklus:
Mechanisches Leben: ca. 10 Millionen Operationen, replacement is recommended after reaching the limit
Elektrisches Leben: ca. 1 Millionen Operationen (AC-3), replacement cycle should be shortened for frequent starting
VIII. Zusammenfassung
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. Während der Auswahl, 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.
