Chint NXM-1000S/3300-1000A Molded Case Circuit Breaker

 The Chint NXM-1000S/3300-1000A molded case circuit breaker is an important electrical device widely used in industrial and commercial power distribution systems. The following is a detailed introduction to its relevant information:

1. Basic Overview

The Chint NXM-1000S series molded case circuit breaker is suitable for circuits with an alternating current of 50Hz or 60Hz, a rated working voltage of up to 690V, and a rated current of up to 1000A. The "3300" in the model represents the form of the release and the configuration of accessories. Among them, the first "3" indicates a thermal-magnetic release, and the second "3" indicates that there are no other accessories such as auxiliary contacts, alarm contacts, and shunt trips. And "1000A" specifies the rated current.

2. Technical ParametersChint NXR series thermal overload relays price*

- **Rated Current**: 1000A, which can meet the power supply requirements of relatively high-power loads.

- **Rated Voltage**: Alternating current 50Hz/60Hz, rated working voltage up to 690V.CHINT circuit breaker price

- **Breaking Capacity**: It has a high short-circuit breaking capacity and can quickly cut off the circuit when faults such as short circuits occur to ensure system safety. Generally, it has a high ultimate short-circuit breaking capacity (Icu) and operational short-circuit breaking capacity (Ics). For specific values, please refer to the product manual.

- **Tripping Characteristics*CHINT surge protector price*:

    - **Thermal Tripping**: Used for overload protection. When the current in the circuit exceeds the rated current for a certain period of time, the thermal release operates, causing the circuit breaker to trip.

    - **Magnetic Tripping**: Used for short-circuit protection. When a short-circuit fault occurs in the circuit and the current increases sharply instantaneously, the magnetic release operates quickly to cut off the circuit.Schneider Circuit Breakers

3. Product FeaturesSchneider LRD Thermal Relay Price

- **High Reliability**: Using high-quality contact materials and advanced manufacturing processes to ensure the stable and reliable operation of the circuit breaker during long-term operation and reduce the probability of failures.

- **Good Safety Performance**: Equipped with a complete set of protection functions, such as overload protection and short-circuit protection, which can effectively prevent electrical equipment from being damaged due to overcurrent and ensure the safety of personnel and equipment.

- **Convenient Operation**: Equipped with a reasonable operating mechanism, with small operating force and flexible operation mode. It can be operated manually and electrically (if an electric operating mechanism is equipped).

- **High Protection Level**: The housing has a certain protection level, which can effectively prevent dust, water droplets, etc. from entering the interior of the circuit breaker and adapt to different usage environments.

4. Application Scenarios

- **Industrial Field**: Widely used in the power distribution systems of large industrial enterprises such as factories, mines, and metallurgy to provide protection for large equipment such as motors and transformers.

- **Commercial Buildings**: In the power distribution centers of commercial places such as shopping malls, hotels, and office buildings, it is used for distributing electrical energy and protecting circuits.

- **Infrastructure**: In the power supply systems of infrastructure such as airports, ports, and railways, it ensures the safe and reliable supply of electricity.

5. Installation and Maintenance

- **Installation**:

    - Before installation, check whether the specifications and model of the circuit breaker are in line with the actual usage requirements, and whether the appearance is damaged.

    - The circuit breaker should be installed in a dry, well-ventilated place without severe vibration, and the installation location should be convenient for operation and maintenance.

    - Wire according to the requirements of the product manual to ensure that the wiring is firm and avoid loose connections.

- **Maintenance**:

    - Regularly check the appearance of the circuit breaker for any deformation, damage, etc.

    - Check the contact condition of the contacts. If there are phenomena such as overheating and ablation, deal with them in a timely manner.

    - Regularly conduct operation tests on the circuit breaker to check the reliability of its actions.

6. Selection Precautions

- **Rated Current Selection**: Select an appropriate rated current according to the actual current of the load. Generally, the long-term operating current of the load should be less than the rated current of the circuit breaker.

- **Breaking Capacity Selection**: Select a circuit breaker with sufficient breaking capacity according to the possible magnitude of the short-circuit current in the circuit to ensure that the circuit can be reliably cut off when a short-circuit fault occurs.

- **Tripping Characteristic Selection**: Select appropriate tripping characteristics according to the nature of the load. For example, for motor loads, a release with a longer time delay characteristic can be selected to avoid misoperation of the circuit breaker caused by the inrush current during motor starting. The external dimensions (width × depth × height) of the Chint NXM-1000S/3300-1000A molded case circuit breaker are usually 210mm × 406mm × 202mm. Compared with products of the same model from other brands, the Chint NXM-1000S/3300-1000A molded case circuit breaker has the following advantages:

- **Functional Features**:

    - **Comprehensive Protection Function**: Equipped with a brand-new electronic release, it can achieve overload long-time delay, short-circuit short-time delay, short-circuit instantaneous protection, etc., and also has the function of overload alarm without tripping, which can accurately handle potential faults and meet various protection needs. Some products of the same model from other brands may not have such comprehensive protection functions or may be lacking in protection accuracy.

    - **Convenient On-site Adjustment**: The electronic release makes on-site adjustment more convenient. Users can quickly adjust the protection parameters according to actual needs without complex operations or professional tools. In contrast, the parameter adjustment of some brand products may be more cumbersome and require professional technicians to operate.

    - **Human-Machine Interaction Advantage**: It is equipped with a USB data interface, which can be connected to a PC or mobile device through a standard USB interface to achieve four major functions: data reading, parameter setting, online detection, and fault recording. The operation is convenient and user-friendly. This function may not be common in products of the same model from other brands, providing users with more efficient operation and maintenance means.

- **Safety Performance**:

    - **Excellent Insulation Design**: Adopting a double-insulation design effectively increases the insulation performance of the product, prevents the risk of electric shock, and at the same time enables on-site disassembly and installation of accessories, making maintenance safer and more efficient. Products from other brands may not have such outstanding insulation designs, or may require more safety measures and professional personnel for operation during maintenance.

    - **Strong Environmental Adaptability**: The applicable environmental temperature range is -35°C to 70°C, which can meet the application requirements in various harsh environments. Compared with the narrower temperature range of some brand products, this circuit breaker from Chint has higher reliability in extreme environments. For example, the applicable environmental temperature range of some molded case circuit breakers from Schneider is -25°C to +60°C, and its adaptability in low-temperature environments is not as good as that of Chint products.

- **Product Design and Cost**:

    - **Small Volume**: It has the characteristics of small volume, high breaking capacity, and short arcing distance, which has an advantage in situations where the installation space is limited. Compared with products of the same specification but larger volume from other brands, the Chint NXM series is more convenient to install in various distribution boxes or switchgear cabinets.

    - **High Cost Performance**: The current frame is finely divided, and users can choose a more suitable current frame, which improves the cost performance of the product and reduces the use cost. Under the condition of meeting the same performance requirements, the price of this product from Chint is relatively more affordable compared with some internationally renowned brands. For example, the price of the Chint NXM-1000S/3300-1000A molded case circuit breaker on platforms such as Alibaba is about WA：0086-13811255435 yuan, while the price of products of the same specification from brands such as Schneider and ABB may be much higher.