Miniature Circuit Breaker with 10kA Breaking Capacity
This miniature circuit breaker provides reliable circuit protection. In case of an overload, the MCB handle trips and stays in a central position to quickly identify the faulty line.





Technical Specifications
Overview
High-Performance Miniature Circuit Breaker
This miniature circuit breaker is engineered for reliable overload and short-circuit protection in residential, commercial, and industrial electrical systems. Featuring a robust arc extinguishing system, it delivers a high short-circuit capacity of 10kA across the range, with up to 15kA available for ratings up to 40A. The device is designed for longevity and ease of use, incorporating a quick-making mechanism that supports up to 10,000 electrical cycles and a user-friendly handle with a clear contact position indicator.
Technical Specifications
Key Technical Parameters
| Parameter | Details |
|---|---|
| Standard | IEC60898-1 |
| Model | BX9B |
| Rated Short-circuit Capacity | 10kA (15kA for ≤ 40A) |
| Electrical Endurance | 10,000 cycles |
Rated Current (In)
- 6
- 10
- 16
- 20
- 25
- 32
- 40
- 50
- 63
Rated Voltage (Un)
- Available Pole Configurations
- 1P2P3P4P1P+N3P+N
- Curve Characteristics
- BCD

Features
Performance Highlights
Key Design Features
- Arc-shaped handle for comfortable operation
- Transparent cover for easy labeling
- Contact position indicator window
- Locking device to prevent unauthorized dismounting
- Quick-making mechanism



