Chint NXB63-2P/C1 miniature circuit breaker

Chint NXB63-2P/C1 is a قاطع الدائرة المصغرة suitable for low-voltage power distribution systems. It belongs to the NXB series and is mainly used for overload and short-circuit protection. The following is a detailed analysis of its core information and application scenarios:

1. Technical Parameters and Functional Features
2. المعلمات الأساسية

رقم القطب (2ص): Controls both the live wire (ل) وسلك محايد (ن) simultaneously. It is suitable for 220V single-phase circuits and can achieve double-pole protection.

التصنيف الحالي (C1): 1أ, with a Type C tripping curve (instantaneous tripping when the current reaches 5-10 أضعاف التيار المقنن). It is applicable to circuits sensitive to overload, such as lighting circuits and low-power equipment.

كسر القدرة: 10ال (6kA for some models), which can quickly cut off short-circuit current to avoid equipment damage and fire risks.

الجهد المقنن: 400الخامس و (for 2P models), compliant with GB/T 10963.1 واللجنة الانتخابية المستقلة 60898-1 المعايير, and has passed the CCC certification.

2. Design Features

Modular Structure: يدعم تركيب السكك الحديدية DIN (TH35-7.5 type) and can be combined with accessories such as auxiliary contacts and over/under-voltage release to expand its functions.

Arc Extinguishing Technology: Adopts a fast arc extinguishing design, featuring high breaking speed, which reduces arc damage to contacts.

Temperature Compensation: Built-in bimetallic strip that automatically adjusts tripping characteristics according to ambient temperature, ensuring stable operation within the range of -35℃ to 70℃.

1. Application Scenarios and Typical Configurations
2. مجالات التطبيق

توزيع الطاقة السكنية: Used for protecting low-power equipment such as lighting circuits and small electrical appliances (على سبيل المثال, set-top boxes, routers).

Commercial and Industrial Sectors: Suitable for controlling power supply lines of signal circuits, sensors, or small precision instruments.

Special Scenarios: Circuits that require strict restriction of overload current, such as laboratory equipment and medical instruments.

2. احتياطات التثبيت

Wire Specification: It is recommended to use copper wires with a cross-sectional area of 1-2.5mm². The terminal screws should be tightened (with a torque of 2.0N·m) to avoid overheating caused by poor contact.

Derating Use: When multiple circuit breakers are installed side by side, derating is required. على سبيل المثال, when 7-9 units are installed in parallel, the rated current should be reduced to 0.76 مرات.

المتطلبات البيئية: Avoid use in humid, high-temperature (＞70℃) or high-altitude (＞2000m) environments; خلاف ذلك, the rated parameters need to be adjusted.

ثالثا. Compliance and Alternative Solutions

1. International Certifications

– This model has passed CCC (China Compulsory Certification) and CE certification, but UL certification is not clearly marked. If it needs to be used in North America, it is recommended to select Chint’s NB1G-63 series (compliant with UL 60947-2 معيار) or other models with UL certification.

2. Recommended Alternative Models

NXB63-2P/C2: With a rated current of 2A, it is suitable for LED lighting or small chargers with slightly higher power.

NXB63-2P/C6: A 6A model that can be used for equipment such as smart sockets and small fans.

NB1G-63 Series: Equipped with over-voltage protection function, suitable for areas with large voltage fluctuations.

1. User Feedback and Common Issues
2. Actual Performance

– Users generally report that Chint’s NXB series circuit breakers are easy to install and highly reliable, and are widely used especially in home decoration.

– Low-current models (such as C1) perform stably in laboratories or with precision equipment, with no false tripping incidents.

2. Common Faults and Troubleshooting

Failure to Close: Check if there is a short circuit at the load end, or replace the circuit breaker with the same specification.

Abnormally High Temperature: Ensure the wires are connected firmly, or increase the cross-sectional area of the wires to reduce resistance.

Failure to Reset After Tripping: It is necessary to investigate the cause of the fault (على سبيل المثال, uneliminated short circuit) and contact a professional electrician for maintenance if necessary.

1. Purchase and Usage Recommendations
2. اختيار القناة

– It is recommended to purchase through WhatsApp: 0086-13811255435 to avoid counterfeit products.

– Pay attention to the anti-counterfeiting mark on the package; the authenticity can be verified through Chint’s official website.

2. Safety Tips

– Be sure to cut off the power supply before installation; live operation is strictly prohibited.

– Regularly check the status of the circuit breaker (على سبيل المثال, اضغط على زر الاختبار شهريا) to ensure the normal operation of the tripping function.

ملخص

Chint NXB63-2P/C1 is a cost-effective miniature circuit breaker. With its accurate overload protection, high reliability, and flexible expandability, it has become an ideal choice for low-voltage power distribution systems. In residential, commercial, and industrial scenarios, it can effectively ensure circuit safety while meeting the needs of equipment with different power levels. If it needs to be used in North America, it is recommended to give priority to models with UL certification (such as the NB1G-63 series) and strictly comply with local electrical regulations.