Chint Air Switch NXB63-3P/D32 circuit breaker

Chint Air Switch NXB63-3P/D32 is a three-pole miniature 회로 차단기 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

모델 의미:

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

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

D32: D-type tripping curve, rated current 32A, suitable for loads with high inrush current (such as motors).

Key Parameters:

Rated Voltage: 400뷔와 (3P specification), frequency 50Hz.

Breaking Capacity: 6그만큼 (complies with IEC 60898-1 standard), capable of quickly cutting off short-circuit current.

Tripping Characteristic: D-type curve, suitable for equipment with large starting current, such as motors, transformers, 등.

Certification: Certified by CCC, CE, TUV, 등., 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.

Core Functions:

과부하 보호: When the current exceeds the rated value, the bimetallic strip heats up and bends to trigger tripping.

단락 보호: The electromagnetic tripping device quickly cuts off the circuit in case of a short circuit (response time < 0.1 초).

절연 기능: After the handle is opened, the circuit can be safely maintained, meeting the requirements of electrical isolation.

3. Installation and Usage Notes

설치 방법:

– Standard 35mm guide rail installation, supporting DIN EN 60715 standard, 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 (예를 들어, 32A is recommended to use 6mm² copper wire).

환경 요구 사항:

– Operating temperature range: -5℃ to +40℃, humidity ≤ 95%RH (결로가 없을 것).

– Avoid installation in environments with high temperature, humidity or corrosive gases.

Maintenance Suggestions:

– 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

International Market:

– 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:

– If UL certification is required, 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.