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| Parameter | 1P | 2P | 3P | 4P |
| Rated current In | 6A, 10A, 13A, 16A, 20A, 25A, 32A, 40A, 50A, 63A | |||
| Rated Working Voltage(Ue) | 300V DC | 600V DC | 900V DC | 1200V DC |
| Rated breaking capacity | up to 6kA | |||
| Rated impulse withstand voltage | 6KV | |||
| Certification | Complies with IEC 60947-2 & GB/T 14048.2 | |||
| Electrical Life | 10,000 cycles | |||
| Mechanical Life | 20,000 cycles | |||
UKB8Z DC Mini Circuit Breaker 1Pole 63A 300V DC MCB 6kA
The UKB8Z-63 high-breaking-capacity DC miniature circuit breaker is designed for use in photovoltaic (PV) DC systems. It provides reliable protection against overloads and short circuits in solar DC circuits.
Additionally, it allows for manual disconnection when necessary—such as during maintenance—to isolate specific circuits and prevent the risk of electric shock.
This breaker is also suitable for applications in telecommunications, electric vehicles, energy storage systems, and other DC power environments requiring high safety standards and breaking performance.
Free Quote NowKey Features
- Complies with IEC 60947-2 standards
- 6kA breaking capacity for reliable short-circuit protection
- A green indicator shows the contacts are in open position
- Contact position indicator for clear status monitoring
- Specialized DC Arc Extinguishing Technology
- Rated Working Voltage up to 1200V DC
Applications
- Photovoltaic DC combiner box protection
- Telecommunications and Data Centers
- DC distribution boards and telecom power systems protection
- Energy Storage Systems (ESS) and Battery Banks
- DC protection for EV chargers
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