Disjoncteur miniature Chint NXB63-2P/C1

Chint NXB63-2P/C1 is a disjoncteur miniature 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. Paramètres de base

Numéro de pôle (2P.): Controls both the live wire (L) et fil neutre (N) simultaneously. It is suitable for 220V single-phase circuits and can achieve double-pole protection.

Courant nominal (C1): 1UN, with a Type C tripping curve (instantaneous tripping when the current reaches 5-10 fois le courant nominal). It is applicable to circuits sensitive to overload, such as lighting circuits and low-power equipment.

Capacité de coupure: 10le (6kA for some models), which can quickly cut off short-circuit current to avoid equipment damage and fire risks.

Tension nominale: 400V et (for 2P models), conforme à GB/T 10963.1 et CEI 60898-1 normes, et a passé la certification CCC.

2. Design Features

Modular Structure: Prend en charge le montage sur rail 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. Champs d'application

Residential Power Distribution: Used for protecting low-power equipment such as lighting circuits and small electrical appliances (par ex., 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. Précautions d'installation

Spécification du fil: 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, un déclassement est nécessaire. Par exemple, when 7-9 units are installed in parallel, the rated current should be reduced to 0.76 fois.

Exigences environnementales: Avoid use in humid, haute température (＞70℃) or high-altitude (＞2000m) environments; otherwise, the rated parameters need to be adjusted.

III. Compliance and Alternative Solutions

1. Certifications internationales

– This model has passed CCC (Certification obligatoire en Chine) 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 (conforme à UL 60947-2 standard) or other models with UL certification.

2. Modèles alternatifs recommandés

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. Commentaires des utilisateurs et problèmes courants
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 (par ex., uneliminated short circuit) and contact a professional electrician for maintenance if necessary.

1. Purchase and Usage Recommendations
2. Sélection des chaînes

– 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 (par ex., press the test button monthly) to ensure the normal operation of the tripping function.

Résumé

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.