Chint Contactor 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, power distribution systems, and automated equipment. The following is a summary of its core information:

1. Technical Parameters and Performance
2. Electrical Specifications

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

Contactos auxiliares: 1 Normalmente abierto (NO) + 1 Normalmente cerrado (CAROLINA DEL NORTE), supporting interlocking or signal feedback circuits.

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

Número de polo: 3 polos (3PAG), suitable for three-phase circuits.

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

2. Mechanical and Environmental Characteristics

Vida mecánica: Over 6 millones de operaciones; electrical life can reach 1.2 millones de operaciones (for AC-3), suitable for high-frequency operation scenarios.

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

Temperatura de funcionamiento: -5℃ a +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. Certificación y Cumplimiento

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

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

1. Escenarios de aplicación
2. Control de motores

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, bombas de agua, compresores, y otros equipos.

2. Automatización Industrial

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. Reemplazo y actualización

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

III. Precio y canales de compra

1. Precio de mercado

Mercado internacional: 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. Especificaciones de cableado

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

Circuito de control: 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

– Antes de la instalación, 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 operaciones).

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

Advantages: Diseño modular, support for more contact combinations (p.ej., 2NO+2NC), arc distance shortened to within 10mm, and adaptation to the digital needs of smart factories.

Compatibilidad: 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. User Feedback

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

– 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 (motores) and AC-4 (high-inductance loads).

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