Chint Automatic Transfer Switching Equipment (ATSE)NH40-2000/4SZ

The Chint NH40-2000/4SZ is a **PC-class Automatic Transfer Switching Equipment (ATSE)**, specifically designed for three-phase four-wire power supply systems, and is suitable for scenarios with extremely high requirements for power supply continuity. The following is a detailed analysis of its core technical parameters, application scenarios, and selection suggestions:Schneider Circuit Breakers Price

 I. Core Technical Parameters and Functional Characteristics

1. **Electrical Performance*Chint's NB1-63DC series DC circuit breakers Price*

    - **Rated Current**: 2000A, which can stably carry large current loads for a long time, suitable for scenarios such as industrial equipment and large commercial buildings.

    - **Rated Voltage**: Alternating current 50Hz/60Hz, with a rated operating voltage of 400V or 690V (to be confirmed according to the model).

    - **Breaking Capacity*Chint NXR series thermal overload relays price*:

        - **Short-time withstand current (Icw)**: According to the technical documents of the Chint NH40 series, the Icw of large current models (such as 630A) is 12.6kA. It is speculated that the Icw of the 2000A model may be higher (subject to the official parameters).CHINT contactor price

        - **Short-circuit making capacity (Icm)**: Usually 1.8 times that of Icw. For example, the Icm of the 630A model is 25.2kA, and the 2000A model may reach a higher value.

    - **Certification Standards**: It complies with GB/T 14048.11 (corresponding to IEC 60947-6-1) and GB/T 14048.3 (corresponding to IEC 60947-3) standards, but **UL certification is not explicitly mentioned**, which may affect its use in the North American market.

2. **Structure and Operation*CHINT surge protector price*

    - **Pole Number and Conversion Mode**: 4P four-pole design, supporting automatic or manual switching between two power sources (main power source and backup power source). There will be a short interruption of power supply during the switching process (the conversion time is about 0.1-0.5 seconds).

    - **Drive Mode**: Electromagnetic drive. The operating mechanism has a built-in energy storage spring to ensure fast and reliable switching.

    - **Installation Method**: It supports front-of-panel wiring. The operating handle can be installed inside or outside the cabinet, adapting to different distribution cabinet designs.

II. Typical Application Scenarios

1. **Key Infrastructure**

    - **Hospitals**: Backup power source switching in places such as operating rooms and Intensive Care Units (ICUs) to ensure the continuous operation of medical equipment.

    - **Data Centers**: Power supply guarantee for server clusters and network equipment to avoid data loss or service interruption due to power outages.

    - **Fire Protection Systems**: Power source switching for equipment such as fire pumps and emergency lighting to meet fire protection specification requirements.

2. **Industrial and Commercial Fields**

    - **Chemical/Metallurgical Industries**: Power supply for motors and control systems on production lines to prevent production accidents caused by power outages.

    - **High-rise Buildings**: Dual-power supply guarantee for elevators, water supply and drainage systems, and security equipment to enhance building safety.

    - **Malls/Supermarkets**: Power source switching for cash register systems and cold storage equipment to reduce losses due to business interruptions.

3. **Emergency and Backup Power Sources**

    - **Military Facilities**: Backup power source switching for communication equipment and command systems to ensure the reliability of power supply during wartime.

    - **Civil Air Defense Projects**: Power supply guarantee for underground shelters and emergency command centers to meet disaster prevention needs.

 III. Selection and Installation Key Points

1. **Load Matching**

    - **Current Selection**: Ensure that the rated current of the switch (2000A) is greater than the actual load current. It is recommended to reserve a 20%-30% redundancy.

    - **Short-circuit Protection**: The PC-class switch itself does not have short-circuit breaking capacity and needs to be **used in conjunction with a circuit breaker** (such as the Chint NM8 series molded case circuit breaker) to achieve the breaking of fault current.

2. **Environmental Requirements**

    - **Temperature and Altitude**: The operating temperature is from -5°C to +40°C, and the altitude should not exceed 2000 meters. In high-altitude areas, it needs to be derated for use.

    - **Humidity and Pollution**: When the maximum temperature is +40°C, the relative humidity should not exceed 50%. At lower temperatures, a higher humidity is allowed (such as 90% at 20°C), but protection against condensation is required.

    - **Installation Location**: It should be vertically installed in a place without vibration and corrosive gases, and avoid direct sunlight.

3. **Certification and Compliance**

    - **North American Market**: If it needs to be used in North America, it is necessary to confirm whether it has passed the UL certification (currently not mentioned in the public information), or select an alternative model with UL certification (such as the Schneider CVS series).

    - **Fire Protection Requirements**: When used in a fire protection system, it needs to comply with the relevant requirements of GB 50116 "Code for Design of Automatic Fire Alarm Systems".

 IV. Price and Supply Information

1. **Market Price**

    - **NH40-2000/4SZ**: Consult via Whatsapp: 86-13811255435

2. **Supply Status**

    - **Regular Models**: Medium and low current models (such as 63A, 100A) usually have现货 and can be delivered quickly.

    - **2000A Model**: It may need to be customized or have a long delivery cycle (about 2-4 weeks). It is recommended to confirm the inventory and production plan with the supplier in advance.

 V. Maintenance and Troubleshooting

1. **Daily Maintenance**

    - **Regular Inspection**: Inspect the contact state of the contacts, the tightness of the wiring terminals, and the flexibility of the operating mechanism every quarter.

    - **Cleaning and Maintenance**: Remove dust and oil stains to ensure the insulation performance of the housing. When the contacts are oxidized, they need to be sanded with sandpaper or replaced.

    - **Function Test**: Conduct an automatic switching test once a year to verify the reliability of the control circuit and the drive motor.

2. **Common Faults and Handling**

    - **Switching Failure**: Check whether the power supply voltage, control signal, and drive motor are normal. Replace the control module if necessary.

    - **Contact Overheating**: Check whether the load current exceeds the rated value, or if the contact pressure is insufficient, adjust the spring tension.

    - **Malfunction**: Check for electromagnetic interference or control logic errors, and adjust the delay parameters or upgrade the firmware.

Alternative Solutions and Comparisons

1. **Internal Alternatives of Chint**

    - **NZ7 Series**: It has a higher breaking capacity (Icw can reach up to 80kA), suitable for scenarios with higher requirements for short-circuit protection, but the price is about 30%-50% higher than that of the NH40SZ series.

    - **NTS Series**: An economical dual-power conversion switch with a lower price but simplified functions, suitable for non-critical loads.

2. **Other Brands**

    - **Schneider CVS Series**: It supports UL certification and has a strong breaking capacity (Icw up to 150kA), but the price is about 2-3 times that of the NH40SZ series.

    - **ABB Tmax XT Series**: Modular design, with expandable communication functions, suitable for intelligent power distribution systems.

Conclusion

The NH40-2000/4SZ is a highly reliable dual-power conversion switch, suitable for industrial, commercial, and infrastructure scenarios with extremely high requirements for power supply continuity. When selecting a model, key attention should be paid to load matching, breaking capacity, and certification requirements, and the latest technical support should be obtained through official channels. If you need to further understand the detailed parameters of the 2000A model or its applicability in the North American market, it is recommended to directly contact the Chint sales team or authorized dealers. 

Recommendations for alternative solutions for Chint NH40-2000/4SZ (PC-class automatic transfer switch for dual power supplies, rated current 2000A, four poles), covering domestic brands, international brands, and models suitable for special scenarios, along with selection suggestions and certification instructions:

 I. Alternative Solutions from Domestic Brands

 1. Delixi CDQ3H Series (PC-class ATSE)

   - **Core Parameters**:

     - Rated Current: 2000A (Needs customization, the highest rated current of regular models is 800A)

     - Breaking Capacity: Icw = 12.6kA (Reference value for the 630A model), it is speculated that the 2000A model is higher

     - Certification: CCC certification, UL certification is not explicitly mentioned

   - **Advantages**:

     - The price is about 80%-90% of that of the Chint NH40 series, with high cost-effectiveness.

     - Supports automatic/manual switching and is suitable for three-phase four-wire systems.

   - **Applicable Scenarios**: Backup power supply switching for domestic industrial and commercial buildings, and scenarios with low requirements for certification.

   - **Reference Price**: Consult via Whatsapp: 86-13811255435 yuan (Needs customization, subject to the quotation of dealers).

   - **Delivery Cycle**: Regular models are in stock, and the 2000A model requires 3-4 weeks.

2. People's Electric Appliance RQ3 Series (PC-class ATSE)

   - **Core Parameters**:

     - Rated Current: 2000A (Needs customization, the highest rated current of regular models is 1600A)

     - Breaking Capacity: Icw = 12.6kA (Reference value for the 630A model)

     - Certification: CCC certification, UL certification is not explicitly mentioned

   - **Advantages**:

     - It has high interface compatibility with the Chint NH40 series, making it easy for direct replacement.

     - Supports the fire protection linkage function and complies with the GB 50116 standard.

   - **Applicable Scenarios**: Scenarios with strict fire protection requirements such as domestic hospitals and data centers.

   - **Reference Price**: Consult via Whatsapp: 86-13811255435 (Customized model).

   - **Delivery Cycle**: Requires 4-6 weeks.

3. Nader NDQ3 Series (PC-class ATSE)

   - **Core Parameters**:

     - Rated Current: 2000A (Needs customization, the highest rated current of regular models is 1600A)

     - Breaking Capacity: Icw = 12.6kA (Reference value for the 630A model)

     - Certification: CCC certification, UL certification is not explicitly mentioned

   - **Advantages**:

     - Modular design, supports the expansion of communication interfaces (such as Modbus).

     - Has a relatively high short-time withstand current, suitable for scenarios with high short-circuit currents.

   - **Applicable Scenarios**: Scenarios that require communication functions such as industrial automation and smart grids.

   - **Reference Price**: Consult via Whatsapp: 86-13811255435 (Customized model).

   - **Delivery Cycle**: Requires 3-5 weeks.

 II. Alternative Solutions from International Brands

1. Schneider CVS Series (PC-class ATSE)

   - **Core Parameters**:

     - Rated Current: 2000A (Needs customization, the highest rated current of regular models is 1600A)

     - Breaking Capacity: Icw = 50kA (For the 1600A model)

     - Certification: UL certification (Applicable in the North American market), CE certification

   - **Advantages**:

     - Has UL certification, suitable for the North American market.

     - Has a strong breaking capacity and can directly replace the NH40SZ series without the need for an additional circuit breaker.

   - **Applicable Scenarios**: Multinational enterprises, data centers, hospitals, etc. in the North American region.

   - **Reference Price**: Consult via Whatsapp: 86-13811255435 (Customized model).

   - **Delivery Cycle**: Requires 6-8 weeks (Import cycle).

2. ABB Tmax XT Series (PC-class ATSE)

   - **Core Parameters**:

     - Rated Current: 2000A (Needs customization, the highest rated current of regular models is 1600A)

     - Breaking Capacity: Icw = 50kA (For the 1600A model)

     - Certification: UL certification, CE certification

   - **Advantages**:

     - Supports hot-swappable modules, making maintenance convenient.

     - Integrates intelligent monitoring functions and can be managed remotely.

   - **Applicable Scenarios**: High-end commercial buildings, intelligent manufacturing factories.

   - **Reference Price**: Consult via Whatsapp: 86-13811255435 (Customized model).

   - **Delivery Cycle**: Requires 5-7 weeks (Import cycle).

3. Siemens 5SX Series (PC-class ATSE)

   - **Core Parameters**:

     - Rated Current: 2000A (Needs customization, the highest rated current of regular models is 1600A)

     - Breaking Capacity: Icw = 50kA (For the 1600A model)

     - Certification: UL certification, CE certification

   - **Advantages**:

     - Complies with the IEC 61850 standard and supports power system integration.

     - Seismic design, suitable for harsh environments.

   - **Applicable Scenarios**: Special environments such as petrochemical and offshore platforms.

   - **Reference Price**: Consult via Whatsapp: 86-13811255435 (Customized model).

   - **Delivery Cycle**: Requires 7-10 weeks (Import cycle).

 III. Solutions Suitable for Special Scenarios

 1. Scenarios with High Short-circuit Currents (such as metallurgy, chemical industry)

   - **Recommended Model**: Chint NZ7 Series (CB-class ATSE)

     - **Core Parameters**:

       - Rated Current: 2000A (Needs customization)

       - Breaking Capacity: Icw = 80kA

       - Certification: CCC certification

     - **Advantages**:

       - The CB class has short-circuit breaking capacity and does not require an additional circuit breaker.

       - The breaking capacity is more than 6 times that of the NH40SZ series.

     - **Reference Price**: Consult via Whatsapp: 86-13811255435 (Customized model).

2. North American Market (Requires UL Certification)

   - **Recommended Model**: Eaton ASCO Series (PC-class ATSE)

     - **Core Parameters**:

       - Rated Current: 2000A (Regular model)

       - Breaking Capacity: Icw = 50kA

       - Certification: UL certification, CSA certification

     - **Advantages**:

       - High market share in the North American market and perfect technical support.

       - Supports synchronous switching of dual power supplies, reducing power outage time.

     - **Reference Price**: Consult via Whatsapp: 86-13811255435 yuan.

 IV. Selection Suggestions and Certification Instructions

 1. Prior Selection for Domestic Scenarios:

   - **Cost-effectiveness**: Delixi CDQ3H series (Low price, fast supply).

   - **Fire Protection Requirements**: People's Electric Appliance RQ3 series (Supports fire protection linkage).

   - **Intelligence**: Nader NDQ3 series (Supports communication expansion).

2. Must-choose for the North American Market:

   - Schneider CVS series, ABB Tmax XT series (Both have passed UL certification).

3. High Reliability Requirements:

   - International brands (such as Siemens, Eaton) have better breaking capacity and certification.

4. Certification Precautions:

   - **Domestic**: It is necessary to confirm the CCC certification (Essential).

   - **North America**: It is necessary to have UL certification (Some models require cCSAus dual certification).

   - **Europe**: It is necessary to have CE certification (International brands have it by default).

V. Comparison Table of Alternative Solutions

 VI. Procurement and Technical Support Suggestions

1. **Parameter Confirmation**:

   - Require the supplier to provide **detailed parameters of the 2000A model** (such as Icw, Icm, switching time) to ensure a match with the NH40SZ series.

   - For domestic brands, it is necessary to confirm **whether the breaking capacity meets the load short-circuit current**, and use it in conjunction with a circuit breaker if necessary.

2. **Certification Documents**:

   - For the North American market, it is necessary to provide a **UL certification certificate**, and for the European market, it is necessary to provide **CE certification**.

3. **Installation Compatibility**:

   - Confirm that the installation dimensions and wiring methods (front-of-panel/rear-of-panel) match the original distribution cabinet.

4. **After-sales Service**:

   - International brands (such as Schneider, ABB) provide global warranty, and for domestic brands, it is necessary to confirm the local service outlets.

5. **Emergency Procurement**:

   - Domestic brands (such as Delixi, People's Electric Appliance) usually have **inventory of large current models**, which can shorten the delivery cycle.

It is recommended to first contact the **authorized dealer of Chint** to confirm the supply status of NH40-2000/4SZ. If the demand cannot be met, then select a model according to the above alternative solutions. For complex scenarios (such as high short-circuit currents, the North American market), you can contact the technical teams of brands such as Schneider and ABB to provide customized solutions.