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, 配電システム, および自動化装置. 以下はその主要な情報の概要です:

1. Technical Parameters and Performance
2. 電気仕様

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

補助接点: 1 通常開 (いいえ) + 1 通常閉 (ノースカロライナ州), supporting interlocking or signal feedback circuits.

コイル電圧: Available in multiple options including 24V, 36V, 110V, 220V, and 380V, compatible with different control power supplies.

極数: 3 極 (3P), 三相回路に適しています.

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

2. 機械的および環境的特性

機械的寿命: Over 6 100万操作; electrical life can reach 1.2 100万操作 (for AC-3), 高頻度の動作シナリオに適しています.

取付方法: 35mm DINレールまたはネジ固定に対応, compatible with industrial standardized installation.

動作温度: -5℃～+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. 認証とコンプライアンス

– Certified to GB14048.4 (中国) and IEC60947-4-1 (国際的) 標準; some models have obtained CE certification.

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

1. アプリケーションシナリオ
2. モーター制御

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, ウォーターポンプ, コンプレッサー, and other equipment.

2. 産業オートメーション

As an executive component of PLC systems, it is used for sequential control of production line equipment, starting and stopping of conveyors, 等, 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. 交換とアップグレード

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

Ⅲ. 価格と購入チャネル

1. 市場価格

国際市場: 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. 配線仕様

主回路: Connect L1/L2/L3 to the three-phase power supply, and T1/T2/T3 to the load (例えば, モーター). It is recommended to use 16mm² copper core wires.

制御回路: 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).

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

2. Commissioning and Maintenance

– 設置前, 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 オペレーション).

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

利点: モジュラー設計, support for more contact combinations (例えば, 2NO+2NC), arc distance shortened to within 10mm, and adaptation to the digital needs of smart factories.

互換性: 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. ユーザーのフィードバック

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

– 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 (モーター) and AC-4 (high-inductance loads).

– 環境適応力: It is recommended to install a dust cover in dusty environments; prioritize the NXC series in high-temperature environments.