Product Specifications
Technical Parameters
| Parameter | Value |
|---|---|
| Product Model | NB1-63DC |
| Product Type | DC Miniature Circuit Breaker |
| Rated Operational Voltage Ue | DC 125/250 V for 1P; DC 250/500 V for 2P; DC 500/1000 V for 4P |
| Rated Current In | 1 A, 2 A, 3 A, 4 A, 6 A, 10 A, 13 A, 16 A, 20 A, 25 A, 32 A, 40 A, 50 A, 63 A |
| Rated Insulation Voltage Ui | 1000 V |
| Rated Impulse Withstand Voltage Uimp | 4 kV |
| Number of Poles | 1P, 2P, 4P |
| Instantaneous Tripping Characteristic | C curve, 7–10In |
| Rated Ultimate Short-Circuit Breaking Capacity Icu | 6 kA at 1P/250 V, 2P/500 V, and 4P/1000 V; 10 kA at 1P/125 V, 2P/250 V, and 4P/500 V |
| Electrical Endurance | 4,000 operations |
| Mechanical Endurance | 20,000 operations |
| Tightening Torque | 2.0 N·m |
| Pollution Degree | Degree 2 |
| Degree of Protection | IP20 |
| Installation Category | Category II, III |
| Mounting Method | DIN-rail mounting |
| Ambient Temperature | -35°C to +60°C |
| Relative Humidity | ≤95% |
| Altitude | ≤2000 m |
| Applicable Standards | GB/T 14048.2, IEC 60947-2 |
| Environmental Compliance | EU RoHS |
| Certifications | CCC, CE, EAC, TÜV |
Functions and Features
- Provides overload and short-circuit protection for DC circuits
- Rated operating voltage up to 1000 V DC
- Rated current range from 1 A to 63 A
- Available in 1P, 2P, and 4P configurations
- C-curve instantaneous tripping characteristic with a range of 7–10In
- Suitable for infrequent switching under normal operating conditions
- DIN-rail mounting for convenient installation in distribution boards and control cabinets
- Complies with EU RoHS environmental requirements
- Suitable for a wide range of low-voltage DC distribution systems
Applications
- Photovoltaic DC combiner and distribution systems
- Battery energy storage and DC distribution systems
- Communication base stations and power supply systems
- Industrial automation DC control circuits
- Power utility DC panels and control power supplies
- Data center DC power distribution systems
- Rail transit auxiliary DC systems
- DC control cabinets and distribution boards
尺寸图
Product Overview
The NB1-63DC DC Miniature Circuit Breaker is designed for DC circuits with rated operating voltages up to 1000 V and rated currents up to 63 A. It is mainly used to protect electrical circuits and connected equipment against overload and short-circuit faults. The product is available in 1P, 2P, and 4P configurations. Different pole configurations can be selected according to the system voltage and circuit arrangement. The 1P version is suitable for circuits up to DC 125/250 V, the 2P version for circuits up to DC 250/500 V, and the 4P version for circuits up to DC 500/1000 V. Under normal operating conditions, the breaker may also be used for infrequent switching of DC circuits. It is suitable for photovoltaic power systems, energy storage systems, communication power supplies, industrial control systems, power utility DC systems, and other low-voltage DC distribution applications. The product complies with GB/T 14048.2 and IEC 60947-2, meets the requirements of the EU RoHS Directive, and has obtained CCC, CE, EAC, and TÜV certifications.
Need Help?
Send us the model number or purchase list. We'll check price and availability.