Chint transparent-casing NM10-100/3300-100A circuit breaker

The Chint transparent-casing NM10-100/3300-100A circuit breaker is a molded case circuit breaker (MCCB) specifically designed for power distribution systems, featuring a transparent housing design and stable protective performance. The core information is as follows:  

I. Product Characteristics and Technical Parameters**  

1. **Transparent Casing Design**  

The circuit breaker's transparent housing is made of high-temperature-resistant and high-strength polycarbonate material, allowing direct observation of the contactor's on/off status. This design is particularly suitable for temporary power supply scenarios in construction sites and other environments requiring real-time monitoring of circuit conditions. It not only helps maintenance personnel quickly identify faults but also effectively prevents misoperations.  

2. **Basic Parameters**  

- **Rated Current**: 100A, applicable to circuits with a rated current of up to 600A in power distribution networks.  

- **Pole Count and Trip Type**: 3 poles (the first "3" in 3300), with复式脱扣 (double trip, the second "3"), combining overload long-time delay and short-circuit instantaneous protection functions, and no additional accessories (the last two "00").  

- **Breaking Capacity**: At AC 380V, the breaking capacity is 15kA, effectively interrupting short-circuit current to protect the circuit.  

- **Operating Voltage and Frequency**: Suitable for AC circuits with 50Hz and a rated operating voltage of up to 380V.  

- **Environmental Adaptability**: Operating temperature range: -5°C to +40°C; altitude not exceeding 2,000 meters; pollution degree 3. It can operate stably in environments without significant vibration or corrosive gases.  

3. **Structure and Installation**  

- The circuit breaker supports vertical or horizontal installation, with front-of-panel wiring. Copper wires with corresponding cross-sectional areas are recommended (e.g., 35mm² wires for the 100A specification).  

- It has an IP30 protection rating (excluding wiring terminals), preventing solid foreign objects from entering, but should avoid use in humid or flammable/explosive environments.  

II. Application Scenarios**  

- **Power Distribution System Protection**: Mainly used for power distribution, protecting lines and power equipment from overload, short-circuit, and undervoltage faults. Widely applied in residential, commercial, and industrial power distribution fields.  

- **Temporary Power Supply Scenarios**: The transparent casing design makes it particularly practical in temporary power supply environments like construction sites, enabling quick judgment of contactor status and reducing maintenance time.  

- **Motor Control**: Can be used as an infrequent starting and overload/short-circuit protection device for motors, meeting industrial motor control needs.  

III. Certifications and Standards**  

- **Domestic Standards**: Complies with GB/T 14048.2 and has passed strict electrical safety and performance tests.  

- **International Certifications**: UL certification is not explicitly mentioned in current search results. For use in the U.S. market, it is recommended to directly contact Chint or its authorized dealers to confirm whether the product meets local standards (e.g., UL 489).  

IV. Supply and Pricing**  

- **U.S. Market**: For inquiries in the U.S., please contact via Whatsapp: 0086-13811255435.  

V. Installation and Maintenance**  

1. **Installation Requirements**  

- Before installation, check whether the product parameters match actual needs and ensure the circuit is powered off.  

- During installation, maintain an inclination from the vertical plane of no more than 5° and ensure minimum installation distances to avoid overheating.  

- Use wires of the corresponding specification when wiring, and tighten terminals to prevent poor contact.  

2. **Maintenance Recommendations**  

- Regularly inspect the contactor status and tightness of wiring terminals to avoid overheating caused by looseness.  

- To test insulation performance, use a 1000V DC megohmmeter; the insulation resistance should be no less than 20MΩ.  

- The product warranty period is typically 1 year from the production date, subject to the manufacturer's instructions.  

VI. Comparison with Other Models**  

- **NM10 vs. NM1B Series**: The NM10 series is positioned as an economical product, with a breaking capacity (15kA) lower than the NM1B series (35kA), but offers a price advantage, suitable for conventional power distribution scenarios with low breaking capacity requirements.  

- **Transparent Casing Version vs. Standard Version**: The transparent casing version adds visualization, ideal for scenarios requiring real-time monitoring, while the standard version focuses more on cost-effectiveness.  

VII. Precautions**  

- **Compatibility**: The circuit breaker must be used in conjunction with upstream protective devices (such as fuses) to ensure selective protection during faults.  

- **Operation Limitations**: Frequent operation is not recommended, as it may shorten the service life.  

- **Environmental Limitations**: Avoid use in environments with humidity exceeding 90% (at temperatures below +25°C) or conductive dust.