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:

Technical Parameters and Performance
전기 사양

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

보조 연락처: 1 Normally Open (아니요) + 1 Normally Closed (NC), supporting interlocking or signal feedback circuits.

코일 전압: Available in multiple options including 24V, 36다섯, 110다섯, 220다섯, and 380V, compatible with different control power supplies.

극수: 3 극 (3피), suitable for three-phase circuits.

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

Mechanical and Environmental Characteristics

기계적 수명: Over 6 백만 개의 작업; electrical life can reach 1.2 백만 개의 작업 (for AC-3), suitable for high-frequency operation scenarios.

장착 방법: Supports 35mm DIN rail or screw fixing, compatible with industrial standardized installation.

작동 온도: -5℃ to +40℃, adaptable to a wide temperature range.

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

인증 및 규정 준수

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

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

응용 시나리오
모터 제어

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, 물 펌프, 압축기, 그리고 다른 장비.

산업 자동화

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

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).

Replacement and Upgrade

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

III. 가격 및 구매 채널

시장 가격

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

Installation and Usage Guidelines
배선사양

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

제어 회로: 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.

Commissioning and Maintenance

– 설치 전, 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 운영).

Alternative Models and Upgrade Recommendations
NXC Series Contactors

Advantages: 모듈형 디자인, support for more contact combinations (예를 들어, 2아니요+2NC), arc distance shortened to within 10mm, and adaptation to the digital needs of smart factories.

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