distribution box of the NXBLE1-63/2P-63A circuit breaker

The demand for the distribution box of the NXBLE163/2P63A circuit breaker with the CE mark. The following is a comprehensive technical analysis and model selection advice:

1. Core Product Parameters and Certification Compliance
2. NXBLE163/2P63A Circuit Breaker

Manufacturer and Model Analysis: This model belongs to the CHNT NXBLE series of residual current operated circuit breakers. NXBLE represents a miniature residual current circuit breaker, 1 is the design serial number, 63 is the frame current rating (A), 2P indicates two poles (controlling both the live wire and the neutral wire simultaneously), and 63A is the rated current.

CE Certification Standards: It complies with the EU EN 608981 (Circuit breakers for overcurrent protection for household and similar installations) and EN 6100063 (Electromagnetic compatibility directive), ensuring legal sales in the EU market.

Technical Characteristics:

Rated voltage: AC 230V/400V

Residual current operating current: 30mA (standard type)

Shortcircuit breaking capacity: 6kA

Trip curve: Type C (suitable for lighting and resistive loads)

Protection level: IP20 (prevents finger contact with internal live parts)

2. Overall CE Certification Requirements for the Distribution Box

Directives and Standards:

Low Voltage Directive (LVD 2014/35/EU): It needs to meet EN 609471 (General requirements for lowvoltage switchgear and controlgear) and EN 609472 (Circuit breakers).

Electromagnetic Compatibility Directive (EMC 2014/30/EU): It needs to pass the tests of EN 6100061 (Immunity for industrial environments) and EN 6100063 (Emissions for residential environments).

Certification Process:

1. Submit a prototype of the fully assembled distribution box and technical documents (circuit diagrams, nameplates, instruction manuals, etc.).
2. The certification body conducts tests on electromagnetic compatibility (EMC), electrical safety (dielectric withstand, temperature rise), and mechanical performance (vibration, impact).
3. After passing the review, a CE certificate is issued, and the product can be affixed with the CE mark.
4. Selection and Compatibility Design of the Distribution Box
5. Recommended Models of Compatible Distribution Boxes

CHNT PZ30 Series:

Model Example: PZ3020 (a 20circuit surfacemounted distribution box)

Features:

Made of coldrolled steel plate with a thickness of 1.2mm and surface powder coating treatment.

Standard 35mm guide rail is equipped, which is compatible with the NXBLE163/2P63A circuit breaker.

The protection level is IP30, suitable for indoor environments.

CHNT NX Series:

Model Example: NX60 (a 60circuit recessedmounted distribution box)

Features:

Modular design, supporting flexible expansion.

Builtin neutral bar and grounding bar, making wiring convenient.

Surge protectors (NXB series) and metering modules can be optionally configured.

2. Key Points of Compatibility Verification

Electrical Parameter Matching:

The rated current of the distribution box should be ≥ 63A (the rated current of the circuit breaker).

The shortcircuit breaking capacity should be ≥ 6kA (the same as that of the circuit breaker).

Physical Dimensions:

The width of the NXBLE163/2P63A circuit breaker is 27mm (1.5 modules), and the distribution box should reserve enough space.

It is recommended to choose a distribution box with ≥ 8 circuits to ensure heat dissipation and maintenance space.

Installation Method:

Rail installation: Use a TH357.5mm standard guide rail to ensure the mechanical stability between the circuit breaker and the distribution box.

Wiring Requirements: The incoming line terminal should be matched with a 610mm² wire, and the outgoing line terminal should be matched with a 2.56mm² wire.

III. Suppliers and Procurement Suggestions

1. Recommended Suppliers

Official Channels of CHNT:

JD Flagship Store: It provides a complete set of solutions for the NXBLE163/2P63A circuit breaker and the PZ30 series distribution box, and supports the download of CE certification documents.

Authorized Dealers: Such as Wan’ao Da (Shenzhen) Electrical Technology Co., Ltd., which can provide customized distribution boxes (the CE certification status needs to be confirmed).

Substitutes of International Brands:

Schneider: iC65N series circuit breaker (2P C63A) + 300 series distribution box, which complies with the CE standard, but the cost is relatively high.

Siemens: 5SU series circuit breaker (2P C63A) + 8PT series distribution box, and a surge protection module needs to be additionally configured.

2. Procurement Precautions

Certification Documents:

The distribution box should provide a CE certificate (including LVD and EMC directives).

The circuit breaker should provide a CE certificate and an EN 608981 test report.

Customization Requirements:

For outdoor use: Choose a distribution box with an IP54 protection level (such as the CHNT NXM series).

For intelligent monitoring: The Acrel ASCB1LE intelligent circuit breaker can be integrated, which supports remote control and energy consumption monitoring.

1. Typical Application Scenarios and Installation Specifications
2. Applicable Scenarios

Residential Power Distribution: As the main incoming line circuit breaker, it protects highpower loads such as air conditioners and electric water heaters.

Commercial Buildings: Used for the lighting and socket circuits of small shops and offices.

Industrial Equipment: Cooperates with the PLC control system to achieve motor overload protection.

2. Installation Specifications

Environmental Requirements:

Ambient temperature: 5°C to +40°C.

Altitude: ≤ 2000 meters.

Installation verticality: ≤ 5°.

Wiring Technology:

The incoming line terminal needs to be crimped with a copper terminal to ensure reliable contact.

The neutral wire (N) and the grounding wire (PE) need to be connected to the neutral bar and the grounding bar respectively to avoid mixed connection.

1. Cost and Maintenance Suggestions
2. Cost Analysis

Price per Set:

Circuit breaker: Approximately 120150 yuan (including tax).

Distribution box (8 circuits): Approximately 200300 yuan (including tax).

Complete set of solutions (including installation): Approximately 500800 yuan.

Certification Fees: The CE certification of the distribution box costs approximately 500010000 yuan, which specifically depends on the test items and the certification body.

2. Maintenance Key Points

Regular Inspections:

Check the tripping function of the circuit breaker every quarter (manually test the button).

Clean the internal dust of the distribution box every year and check whether the wiring terminals are loose.

Fault Handling:

Shortcircuit tripping: Check whether there is a short circuit on the load side and replace the damaged equipment.

Residual current protection action: Use an insulation resistance meter to detect the insulation resistance of the line (it should be ≥ 0.5MΩ).

1. Alternative Solutions and Technical Trends
2. Smart Upgrade Solutions

Acrel ASCB1LE63C632P:

It supports RS485 communication and the Modbus protocol and can be connected to the energy management system.

It has overload, shortcircuit, residual current, overvoltage and undervoltage protection, and supports remote opening and closing.

Schneider Wiser Series:

It supports Bluetooth/WiFi connection and monitors the power consumption status through a mobile phone APP.

It has a builtin power metering module and displays energy consumption data in real time.

2. Environmental Protection and Energy Efficiency

Material Selection: Give priority to the distribution box with RoHS certification (such as the仿威图IP65 distribution box), which complies with the EU environmental protection requirements.

Energysaving Design:

Choose a lowpower circuit breaker (standby power consumption ≤ 0.5W).

The distribution box has a builtin LED lighting to reduce its own energy consumption.

VII. Risk Warnings and Compliance Suggestions

1. Certification Risks:

Avoid purchasing products where only the circuit breaker has a CE mark but the distribution box is not certified, which may lead to customs detention.

Require the supplier to provide the CE certificate number of the distribution box, and the authenticity can be queried through the EU CE certification database (EUDAMED).

2. Regulatory Updates:

Pay attention to new EU regulations (such as EN 608981:2019 implemented in 2025) and update product certifications in a timely manner.

Exporting to EU member states needs to comply with local special requirements (such as the DIN VDE 0660 standard required in Germany).

Conclusion

When selecting a distribution box with the NXBLE163/2P63A circuit breaker with a CE mark, it is necessary to focus on product certification compliance, electrical compatibility, and supplier qualifications. It is recommended to give priority to the CHNT PZ30/NX series distribution boxes, or customize solutions through authorized dealers. For highend requirements, the integration of intelligent circuit breakers and energy efficiency management systems can be considered to improve the reliability and intelligence level of the power distribution system.