Chint Air Switch NXB63-3P/D32 circuit breaker

Chint Air Switch NXB63-3P/D32 is a three-pole miniature cortacircuitos suitable for industrial and commercial scenarios, mainly used for overload protection, short-circuit protection and circuit isolation. The following is a collation of its core information:

1. Model Parsing and Technical Parameters

Model Meaning:

NXB-63: Chint NXB series miniature circuit breaker with a frame current of 63A.

3PAG: Three-pole design, suitable for three-phase circuits (such as 400V systems).

D32: D-type tripping curve, corriente nominal 32A, suitable for loads with high inrush current (como motores).

Parámetros clave:

Tensión nominal: 400V y (3P specification), frequency 50Hz.

Capacidad de ruptura: 6el (cumple con IEC 60898-1 estándar), capable of quickly cutting off short-circuit current.

Característica de disparo: D-type curve, suitable for equipment with large starting current, como motores, transformers, etc..

Proceso de dar un título: Certified by CCC, CE, TUV, etc., but UL certification is not explicitly mentioned, so it may not be applicable to the North American market.

2. Application Scenarios and Functions

Applicable Fields:

– Overload and short-circuit protection for industrial power distribution systems, commercial buildings and residential three-phase circuits.

– Particularly suitable for motor control circuits, as it can withstand the instantaneous high current during motor startup.

Funciones principales:

Protección contra sobrecarga: When the current exceeds the rated value, la tira bimetálica se calienta y se dobla para provocar el disparo.

Protección contra cortocircuitos: The electromagnetic tripping device quickly cuts off the circuit in case of a short circuit (tiempo de respuesta < 0.1 artículos de segunda clase).

Función de aislamiento: After the handle is opened, the circuit can be safely maintained, meeting the requirements of electrical isolation.

3. Installation and Usage Notes

Método de instalación:

– Standard 35mm guide rail installation, supporting DIN EN 60715 estándar, with simple installation.

– The wiring method is top-in and bottom-out, and it is necessary to ensure that the cross-sectional area of the wire matches the current (Por ejemplo, 32A is recommended to use 6mm² copper wire).

Requisitos ambientales:

– Rango de temperatura de funcionamiento: -5℃ a +40℃, humidity ≤ 95%RH (sin condensación).

– Evite la instalación en ambientes con alta temperatura., humidity or corrosive gases.

Sugerencias de mantenimiento:

– Regularly check the flexibility of the handle operation and the state of the contacts to ensure no ablation or oxidation.

– It is recommended to replace the circuit breaker after 10 years or 10,000 operations to ensure reliability.

4. Purchase and Market Applicability

Mercado internacional:

– This model has not explicitly obtained UL certification and may not comply with North American electrical standards (such as NEC).

– If American users need to use it, it is recommended to purchase through importers via Whatsapp: 0086-13811255435, but they need to confirm the compatibility and certification issues by themselves.

5. Suggestions for Alternative Solutions

Alternative Models for the North American Market:

– Si se requiere certificación UL, you can consider Chint’s NXB series variants designed for North America (such as NXB-63 3P D32 UL), or international brands such as Siemens 5SJ6 and ABB S203 series.

– Note that the commonly used voltage in North America is 120/240V, while NXB63-3P/D32 is a 400V specification, so direct use may require a transformer for voltage reduction.

6. Risk Tips

Compatibility Risks:

– Installation of non-UL certified products in the United States may violate local electrical regulations, leading to insurance claims rejection or safety hazards.

– Three-phase 400V equipment is incompatible with the North American single-phase 240V system, and a professional electrician is required to evaluate the transformation plan.