Chint CJX1-475/22 AC Contactor

Model Explanation

Meaning of each part in CJX1-475/22:

1. Основные технические параметры

III. Функциональные особенности

1. Сценарии применения: Mainly used for remote making and breaking of circuits, controlling the start, stop and reversal of AC motors. It is suitable for high-power motor control in industrial automation, power transmission, heavy machinery and other fields.
2. Structural Advantages:

Modular design for easy maintenance; F3 and F4 auxiliary contact blocks can be assembled for function expansion.

Fully enclosed arc extinguishing system improves operational safety and reduces the impact of electric arcs on surrounding components.

High-strength insulating housing with good flame retardancy, complying with safety standards.

3. Performance Advantages:

High rated current, capable of controlling three-phase asynchronous motors with a power of about 250kW (380В, АС-3).

Optimally designed electromagnetic system with low power consumption, low noise and reliable operation.

Can form an electromagnetic starter with thermal overload relays to realize motor overload protection.

1. Installation and Commissioning Guide
2. Installation Preparation

Confirm that the product model and specifications are consistent with the design requirements; check for no appearance damage and complete accessories.

The installation environment shall be free of flammable and explosive gases, no moisture condensation; temperature range -5℃~+40℃, relative humidity ≤90%.

Power must be cut off before installation to ensure safety.

2. Этапы установки
3. Select a suitable installation position and reserve sufficient space for heat dissipation and operation.
4. Fix the contactor with M8-M10 bolts, and the tightening torque shall comply with the requirements of the product manual.
5. Main circuit wiring: Connect the three main contacts to the three-phase power supply and load; fasten the wiring terminals tightly to avoid heating due to loosening.
6. Control circuit wiring: Connect the coil terminals to the control power supply, and the auxiliary contacts to the control circuit (such as self-locking and interlocking circuits).
7. Check the correctness of wiring to ensure no short circuit or reverse connection in the main and control circuits.
8. Commissioning Key Points
9. Measure the coil resistance before power-on to confirm no open circuit or short circuit fault of the coil.
10. Observe whether the contactor operates smoothly and has no abnormal noise during the first power-on.
11. Check whether the on-off state of the main and auxiliary contacts is correct and the contact is good.
12. Test the operation of the contactor under rated load and check whether the temperature rise is within the allowable range.
13. Распространенные неисправности и их устранение

1. Альтернативные модели и совместимость
2. Intra-series Alternatives:

CJX1-475/02: 0 Нормально открытый + 2 Normally Closed auxiliary contacts

CJX1-475/40: 4 Нормально открытый + 0 Normally Closed auxiliary contacts

CJX1-475/44: 4 Нормально открытый + 4 Normally Closed auxiliary contacts

2. Кросс-брендовые альтернативы:

Сименс: 3TF56 series (например, 3TF5622-0XQ0), fully compatible in mounting dimensions and electrical performance

Вкусный: CJX1-475/22, intra-series product with consistent technical parameters

Шнайдер: LC1-D series (mounting dimensions and electrical parameters need to be verified)

VII. Ordering and Usage Notes

1. The following must be clearly specified when placing an order: complete model (including auxiliary contact configuration), rated control power supply voltage and frequency of the coil, and quantity.
2. Пример: 10 units of CJX1-475/22 AC contactor with coil voltage of 220V 50Hz.
3. F3 and F4 auxiliary contact blocks can be assembled for function expansion, which must be additionally indicated when placing an order.
4. Do not touch live parts during use; power must be cut off for maintenance or inspection.
5. Do not use the contactor after removing the arc extinguishing cover to avoid arc hazards.

Comprehensive Guide to Cross-brand Equivalent Models of Chint CJX1-475/22

CJX1-475/22 is a Chint AC contactor with 475A 3-pole and 2NO+2NC auxiliary contacts, equivalent to Siemens 3TF57 series. The following is the detailed introduction of precise alternative models and compatibility of mainstream brands.

1. Overview of Core Equivalent Models (by Brand)

1. Detailed Alternative Information of Each Brand
2. Сименс (Prototype Brand)

Standard Alternative: 3TF5722-0XQ0 (2НО+2НЗ), 3TF5744-0XQ0 (4NO+4NC)

Technical Matching: AC-3 475A/380V, rated insulation voltage 1000V, mechanical life 10 миллион операций, electrical life 1 миллион операций

Примечания: The 3TF57 series has been discontinued; the upgraded alternative is the 3RT1076 series (500А), which is compatible in electrical performance but different in mounting dimensions.

2. Domestic Intra-series (Direct Interchange)

Вкусный: CJX1-475/22, coil voltage optional 220V/380V, fully interchangeable with Chint products, and can share auxiliary contact blocks (F3/F4).

Shanghai People’s/People’s Electric Appliance: CJX1-475/22, intra-series design with the same contact material and arc extinguishing system as Chint.

Other Domestic Brands: CJX1-475/22 of Xinli, Great Wall and other brands are all produced based on Siemens 3TF57 technical standards with good interchangeability.

3. International Brand Alternatives (Parameter Matching)

Шнайдер: LC1-D475/22, rated current 475A, auxiliary contacts 2NO+2NC, fully matched electrical parameters; however, the mounting method is standard DIN rail + bolt mounting, slightly different from the pure bolt mounting of CJX1.

АББ: A500-30-11+AX22 is recommended (AX22 auxiliary contact block needs to be additionally installed to realize 2NO+2NC). The A500 series has a rated current of 500A with slightly larger capacity, suitable for heavy-duty occasions.

LS Electric: GMC-475, rated current 475A, standard configuration of 2NO+2NC auxiliary contacts, mounting dimensions basically compatible with CJX1 with a wide range of optional coil voltages.

4. Changshu Switch (Domestic High-end Brand)

Equivalent Model: CK3-475/22, AC-3 475A, 2NO+2NC auxiliary contacts

Функции: Adopts silver-tungsten alloy contacts with excellent arc extinguishing performance; mechanical life up to 12 миллион операций, higher than the industry standard, suitable for frequent operation occasions.

III. Key Notes for Alternative Model Selection

1. Согласование электрических параметров

Ensure the rated current ≥475A under AC-3 duty and the rated insulation voltage ≥660V.

The control coil voltage must be consistent with the original system (например, 220V/380V/110V), compatible with 50Hz/60Hz frequency.

2. Mounting Compatibility

Intra-series products such as Siemens 3TF57, Delixi CJX1 and Shanghai People’s CJX1 have completely consistent mounting hole positions and can be directly replaced.

Schneider LC1-D, ABB A series and others need to recheck the mounting dimensions, and the installation position may need to be adjusted.

CJX1-475/22 adopts bolt mounting (DIN rail mounting not supported), so attention should be paid to the matching of mounting methods during replacement.

3. Auxiliary Contact Configuration

Ensure the alternative model is equipped with 2NO+2NC auxiliary contacts; if not, it can be realized by installing additional auxiliary contact blocks (например, F3/F4).

The main contactors of some brands (например, АББ) are default configured with 1NO+1NC, and additional auxiliary contact modules need to be ordered.

4. Arc Extinguishing System and Operating Frequency

The arc extinguishing system of the alternative product shall comply with IEC 60947-4-1 standard to ensure the arc extinguishing effect.

When the operating frequency is higher than 600 operations per hour, it is recommended to derate the usage or select a special high-frequency contactor.

1. Priority of Recommended Alternative Schemes
2. First Choice: Delixi CJX1-475/22, Shanghai People’s CJX1-475/22 (domestic intra-series, 100% interchangeable with low cost)
3. Second Choice: Siemens 3RT1076 series (upgraded model of the original 3TF57, reliable quality, suitable for key equipment)
4. Alternative Choice: Schneider LC1-D475/22, ABB A500+AX22 (international brands with excellent performance, suitable for high-end applications)