Chint NB1-63H/1PC16 single-pole miniature circuit breaker

Chint NB1-63H/1PC16 is a single-pole miniature circuit breaker with high breaking capacity. It is suitable for circuits with AC 50Hz and rated voltage of 230/400V, mainly providing overload and short-circuit protection functions.

I. Core Parameters and Functions

1. Model Meaning

- **NB1**: Series code for Chint miniature circuit breakers;

- **63**: Frame rating current (the maximum current supported by this series is 63A);

- **H**: High breaking capacity, with an ultimate short-circuit breaking capacity of **10kA**;

- **1P**: Single-pole design, controlling only the live wire;

- **C16**: Type C tripping curve, suitable for conventional loads (such as lighting and sockets), with an instantaneous tripping range of **5-10 times the rated current** (i.e., quick tripping occurs when the current is 80-160A).

2. Technical Characteristics

- **Electrical Life**: 4000 operations (for rated current ≤ 32A) or 2000 operations (for 40-63A), with a mechanical life of up to 20,000 operations;

- **Wiring Capacity**: Supports a maximum 25mm² copper conductor, adopts screw-compressed terminals, and the torque should be controlled at 2.0Nm;

- **Environmental Adaptability**: Operating temperature range is -25°C to +60°C. No derating is required when the altitude is ≤ 2000m; when the altitude exceeds 2000m, the rated current is derated by 10% for every 1000m increase in altitude;

- **Certification Standards**: Certified by CCC, CE, and SEMKO, complying with GB 10963.1 and IEC 60898-1 standards.

3. Function Expansion

- It can be used in conjunction with modular accessories such as S9 auxiliary contacts, V9 alarm contacts, and XF9 shunt trip devices to realize functions like remote control and status indication.

 II. Application Scenarios and Selection Recommendations

 1. Typical Applications

- **Residential Power Distribution**: Used as a protection switch for lighting circuits (e.g., LED lamp sets with 16A load) and sockets for small electrical appliances (e.g., televisions, computers);

- **Commercial and Industrial Use**: Suitable for controlling single-phase equipment below 3kW (e.g., small air conditioners, power tools) or as branch protection for distribution boxes.

 2. Selection Comparison

- **Comparison with Schneider iC65H**: Both have a breaking capacity of 10kA, but the price of Chint NB1-63H is about 30% lower, offering better cost performance; Schneider has a richer accessory ecosystem, making it suitable for complex control requirements;

- **Comparison with Other Chint Series**: NB1-63H is positioned higher than NB7 (a copy of DZ47), with stronger breaking capacity and reliability. It is close to the high-end NB8 series but only costs half the price of the latter.

3. Precautions

- **Derated Use**: In high-altitude areas, the rated current needs to be adjusted according to the actual altitude (e.g., the actual usable current of C16 is 14.4A at 2500m);

- **Matching Earth Leakage Protector**: If earth leakage protection is required, it should be matched with the NB1LE-63H series residual current circuit breakers (e.g., NB1LE-63H 1P+N C16 30mA).

 III. Installation and Usage

1. Installation Method

- It adopts TH35-7.5mm standard guide rail installation. The width of the 1P circuit breaker is 18mm (1 module), which can be densely arranged in the distribution box.

 2. Price Reference

- **International Market**: Approximately 23 Euros (including VAT) in the European region, suitable for projects with limited budgets.China, Mongolia, South Korea, the Philippines, Vietnam, Laos, Cambodia, Myanmar, Thailand, Malaysia, Brunei, Singapore, Indonesia, Nepal, Bhutan, Bangladesh, India, Pakistan, Sri Lanka, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan, Turkmenistan, Afghanistan, Iraq, Jordan, Saudi Arabia, Bahrain, Qatar, Kuwait, the United Arab Emirates, Oman, Yemen, Turkey, Ukraine, Poland, the Czech Republic, Slovakia, Hungary, Egypt, Libya, Tunisia, Algeria, Ethiopia, Somalia, Kenya, Tanzania, Uganda, Rwanda, the Central African Republic, Cameroon, the Republic of the Congo, the Democratic Republic of the Congo, Zambia, Angola, Mozambique, South Africa, Eswatini, Canada, the United States, Mexico, the Dominican Republic, Peru, Bolivia, Brazil, Chile, Argentina, Uruguay, Paraguay