Contacteur de Chint CJX2-5011

Chint Contactor CJX2-5011 is a three-phase AC contactor specifically designed for industrial control. It is suitable for frequent starting and stopping of motors, systèmes de distribution d'énergie, and automated equipment. Ce qui suit est un résumé de ses informations de base:

1. Paramètres techniques et performances
2. Electrical Specifications

Courant nominal: 50UN (under AC-3 utilization category and 380V voltage), which can meet the control requirements of motors ranging from 7.5kW to 15kW.

Contacts auxiliaires: 1 Normalement ouvert (NON) + 1 Normalement fermé (Caroline du Nord), supporting interlocking or signal feedback circuits.

Tension de bobine: Available in multiple options including 24V, 36V, 110V, 220V, and 380V, compatible with different control power supplies.

Numéro de pôle: 3 poles (3P.), suitable for three-phase circuits.

Insulation Voltage: 660V (per IEC standard) or 690V (per GB standard), meeting the requirements of high-voltage environments.

2. Mechanical and Environmental Characteristics

Durée de vie mécanique: Sur 6 millions d'opérations; electrical life can reach 1.2 millions d'opérations (for AC-3), suitable for high-frequency operation scenarios.

Méthode de montage: Supports 35mm DIN rail or screw fixing, compatible with industrial standardized installation.

Température de fonctionnement: -5℃ à +40℃, adaptable to a wide temperature range.

Arc Extinguishing System: Adopts a double-break structure and arc-extinguishing grids, with an arc distance of less than 10mm to ensure safety.

3. Certification et conformité

– Certified to GB14048.4 (Chine) and IEC60947-4-1 (international) normes; some models have obtained CE certification.

– Complies with the requirements of pollution degree 3 and installation category Ⅲ for industrial environments.

1. Scénarios d'application
2. Contrôle du moteur

It can directly control the starting and stopping of 7.5kW to 15kW motors, and supports complex logic such as star-delta reduced-voltage starting and reversible control. Typical applications include fans, pompes à eau, compresseurs, and other equipment.

2. Automatisation industrielle

As an executive component of PLC systems, it is used for sequential control of production line equipment, starting and stopping of conveyors, etc., and is compatible with 24V~415V wide-voltage control signals.

3. Power Distribution and Energy Sector

It controls air conditioning and lighting systems in building electrical systems, and realizes circuit on-off in new energy scenarios (such as solar inverters).

4. Replacement and Upgrade

It can directly replace Schneider LC1-D50 series contactors, or be upgraded to Chint’s new-generation NXC series (par ex., NXC-50). The latter has a mechanical life increased to 55 million operations and better arc-extinguishing performance.

III. Canaux de prix et d’achat

1. Market Price

International Market: Approximately USD 14.46 per unit (under FCA terms). The specific price fluctuates according to the voltage model and purchase quantity.

1. Installation and Usage Guidelines
2. Spécifications de câblage

Main Circuit: Connect L1/L2/L3 to the three-phase power supply, and T1/T2/T3 to the load (par ex., motor). It is recommended to use 16mm² copper core wires.

Circuit de contrôle: Connect the coil terminals A1/A2 to the control voltage. The auxiliary NO contact is used for self-locking, and the NC contact is used for interlocking (see the sample wiring diagram for details).

Grounding: The metal housing must be reliably grounded to avoid electromagnetic interference.

2. Commissioning and Maintenance

– Avant l'installation, check whether the coil voltage matches, and manually operate the contactor to confirm that the contacts move flexibly.

– Monitor the temperature rise of the contacts during operation. If the temperature exceeds 70℃, it is necessary to check for overload or poor contact.

– Regularly clean the arc-extinguishing chamber and replace worn silver contacts (it is recommended to check once every 500,000 opérations).

1. Alternative Models and Upgrade Recommendations
2. NXC Series Contactors

Avantages: Conception modulaire, support for more contact combinations (par ex., 2NON+2NC), arc distance shortened to within 10mm, and adaptation to the digital needs of smart factories.

Compatibilité: NXC-50 can directly replace CJX2-5011 without changing the installation holes or circuit layout.

2. Alternatives from Other Brands

– Schneider LC1-D50: Fully compatible in parameters but relatively higher in price.

– Delixi CDX2-5011: Close in cost-effectiveness; some models provide UL certification.

1. User Reviews and Precautions
2. Commentaires des utilisateurs

– Most users recognize its durability, with no faults during continuous operation under resistive loads for 2 années.

– Some users mentioned that the 220V coil may malfunction during voltage fluctuations, and it is recommended to use it with a voltage stabilizer.

2. Selection Precautions

– Confirm the load type: Different contact capacities are required for AC-3 (moteurs) and AC-4 (high-inductance loads).

– Adaptabilité environnementale: It is recommended to install a dust cover in dusty environments; prioritize the NXC series in high-temperature environments.