Chint NC1-2501 AC contactor

Chint NC1-2501 is an **AC contactor** belonging to Chint's NC1 product series. It is mainly used for remote control of the start and stop of motors in industrial circuits, and can be used in conjunction with thermal overload relays to protect circuits. The following is detailed information about this model:

I. Core Parameters and Functions

1. Electrical Specifications

- **Rated Current**: 25A (Under AC-3 service category, the applicable motor power is 11kW at 380V).

- **Rated Insulation Voltage**: 690V, suitable for AC circuits with 50/60Hz.

- **Coil Voltage**: Multiple options are available, including 24V, 36V, 48V, 110V, 220V, 380V, etc. (The specific voltage shall be confirmed according to the model suffix; for example, NC1-2501Z is the DC coil version).

- **Auxiliary Contacts**: 1 set of normally closed contacts (the "01" in the model indicates this configuration), which can expand auxiliary functions.

2. Application Scenarios

- Suitable for frequent starting and control of AC motors, and serves as a core control component in scenarios such as industrial machinery, pump equipment, and fans.

- Complies with IEC/EN 60947-4-1 and GB/T 14048.4 standards, and has obtained UL certification, which can meet the safety requirements of the North American market.

II. Product Features

1. Design and Installation

- **Compact Structure**: Supports 35mm standard DIN rail mounting, saving space and facilitating maintenance.

- **Convenient Wiring**: The main circuit terminals support 4-10mm² wires, and the control circuit adopts spring terminals to ensure reliable connection.

- **Mechanical Life**: Up to 10 million operations, suitable for high-frequency operation environments.

2. Reliability

- The coil has a built-in surge suppressor (such as the SR2 series), which can reduce electromagnetic interference and extend the service life.

- The DC coil version (e.g., NC1-2501Z) has no AC noise, making it suitable for occasions with high requirements for environmental quietness.

 III. Purchase and Alternative Options

1. Procurement Channels

- **International Market**: Chint products have obtained UL certification and can be purchased via WhatsApp: 0086-13811255435.

2. Alternative Models

- For higher performance, you can consider the **NXC series** AC contactors (e.g., NXC-25). They are compatible with the installation dimensions of the NC1 series, while featuring energy-saving design and a wider voltage adaptation range.

- For reversible control function, you can choose the **NC1-N series** (e.g., NC1-25N), which has a built-in mechanical interlocking mechanism to ensure the safety of motor forward and reverse rotation.

 IV. Precautions

1. Model Selection and Matching

- Select the corresponding coil specification according to the load current and voltage to avoid coil burnout caused by voltage mismatch.

- It is recommended to use it together with **NR2 series thermal overload relays** (e.g., NR2-25) to provide overload and phase-failure protection.

2. Installation and Maintenance

- During installation, ensure that the ambient temperature is between -25℃ and +70℃, and avoid humid and dusty environments.

- Regularly check the contact wear condition, and replace the auxiliary contact module (e.g., F4-02) if necessary.

V. Technical Documents and Support

Technical Consultation

For customized solutions or troubleshooting, please contact via WhatsApp: 0086-13811255435.

Through the above information, users can fully understand the functions, applications, and procurement methods of NC1-2501, and select appropriate configurations and purchase channels based on specific needs.