Chint molded case circuit breaker NM1-125S/3300-100A

The Chint molded case circuit breaker NM1-125S/3300-100A is a commonly used low-voltage distribution protection appliance.  

- **Model Meaning**:  

  - NM1 is the series number of Chint molded case circuit breakers.  

  - "125" indicates the frame current is 125A, meaning the maximum tripper current that the circuit breaker can install.  

  - "S" represents the standard type. According to the rating of the rated ultimate short-circuit breaking capacity, there are also H type (higher type), R type (current-limiting type), etc.  

  - In "3300", the first "3" indicates 3 poles, the second "3" indicates the tripper type is thermal-magnetic tripper without accessories.  

  - "100A" is the rated current of this circuit breaker.  

- **Main Parameters**:  

  - **Rated Insulation Voltage**: Up to 800V.  

  - **Rated Working Voltage**: Suitable for AC 50Hz, rated working voltage up to 690V.  

  - **Rated Current**: 100A.  

  - **Breaking Capacity**: As a standard type, it has a certain short-circuit breaking capacity, which can quickly cut off the current when a short circuit occurs in the circuit. For specific breaking capacity values, please refer to the product technical manual.  

  - **Application Environment**:  

    - Ambient air temperature: Upper limit +40°C, lower limit -5°C, and the 24h average does not exceed +35°C.  

    - Installation altitude: No more than 2000m.  

    - Relative atmospheric humidity: No more than 50% when the ambient air temperature is +40°C, and higher relative humidity is allowed at lower temperatures.  

- **Functional Features**:  

  - **Protection Function**: It can be used to distribute electric energy and protect lines and power equipment from damage caused by overload, short circuit, undervoltage, etc. It can also be used for infrequent starting of motors and protection against overload, short circuit, and undervoltage.  

  - **Convenient Installation**: The circuit breaker can be installed vertically (upright) or horizontally (transverse).  

  - **Isolation Function**: The product has an isolation function, which can isolate the faulty circuit from the power source for easy maintenance.  

- **Application Scenarios**: It is suitable for distribution network circuits with a rated working current from 10A to 1250A, and is widely used in low-voltage distribution systems in industrial, commercial, civil construction, and other fields, such as in distribution boxes and switchgear, to protect and control the circuit.  

There are some differences between Chint molded case circuit breakers and Delixi molded case circuit breakers in terms of product performance, functional configuration, appearance design, market positioning, etc., as follows:  

- **Product Performance**:  

  - **Breaking Capacity**: Some Chint molded case circuit breakers have strong breaking capacity. For example, the Icu of the NM5PDS series electronic molded case circuit breaker can reach up to 70kA. Delixi molded case circuit breakers also have good breaking performance. For example, the CDM3S series improves the breaking capacity and service life through the patented narrow slot arc extinguishing technology, but specific values may vary depending on the model.  

  - **Current Range**: The rated working current of Chint NM1 series ranges from 10A to 1250A. The rated working current of Delixi CDM9 molded case circuit breakers is up to 800A. Relatively speaking, Chint has a wider coverage.  

- **Functional Configuration**:  

  - **Protection Function**: Both have basic overload, short circuit, and undervoltage protection functions. Some high-end Chint products are equipped with a new electronic tripper, which can more accurately handle fault hazards, and can also realize data reading, parameter setting, and other functions through a USB data interface.  

  - **Accessory Configuration**: Chint circuit breakers have an industry-leading miniaturized accessory design, allowing the simultaneous installation of 4 types of accessories. The CDM3S series of Delixi also has a rich variety of accessories, with new additions such as thermal-magnetic communication backpacks, which can realize remote control and remote signaling for thermal-magnetic molded case circuit breakers.  

- *Appearance Design**: Chint molded case circuit breakers have a more conventional appearance design, focusing on practicality and stability. Delixi adopts a D-element unified appearance design style with a new layout, making it more recognizable. It combines industrial aesthetics with visual experience, and the product volume is more compact, which can effectively reduce the size of the panel cabinet.  

- **Market Positioning**:  

  - Chint has a global market share of about 8% and a Chinese market share of about 25%. With its complete product line and strong distribution network, it dominates the mid-to-low-end market while also expanding to the high-end market.  

  - Delixi has a global market share of about 5% and a Chinese market share of about 15%, with certain competitiveness in the Middle East, Africa, and Southeast Asia markets. Its products are favored by users for their high cost-effectiveness and wide application scenarios, mainly targeting the mid-to-low-end market.  

- **Price**: Overall, both are cost-effective products. However, Delixi molded case circuit breakers may have more affordable prices for some product models, but the specific price needs to be determined according to different models and specifications.