The QIHANG ZW32-40.5 Outdoor High Voltage Vacuum Circuit Breaker is designed for reliable protection and control in medium- and high-voltage power distribution systems. Engineered for 40.5kV outdoor applications, it is suitable for substations, utility distribution lines, and industrial power networks requiring safe and stable switching performance.
This vacuum circuit breaker adopts advanced vacuum arc extinguishing technology, providing dependable interrupting capability, long electrical life, and low maintenance requirements. It effectively delivers overload and short-circuit protection, helping safeguard power equipment, transformers, and overhead lines from electrical fault damage.
With a durable outdoor structure and stable mechanical performance, the ZW32-40.5 breaker is built to operate in demanding environments such as high humidity, dust, and temperature variation. It is widely used in smart grid systems, outdoor switchgear, and utility distribution projects requiring reliable high-voltage circuit protection.
Key Features
• Model: ZW32-40.5
• Rated voltage: 40.5kV
• Vacuum arc extinguishing technology
• Reliable overload and short-circuit protection
• Durable outdoor high-voltage construction
• Long service life with low maintenance
• Stable switching performance in harsh environments
• Suitable for substations and utility distribution systems
Typical Applications
• 35kV–40.5kV outdoor distribution networks
• Utility substations and overhead line systems
• Industrial high-voltage power distribution
• Smart grid and distribution automation projects
• Outdoor switchgear and power infrastructure installations
Key Attributes
| Breaking Capacity | 25 kA, 31.5 kA | Phase | / |
| Rated Frequency | 50 Hz | Frequency | 50 Hz |
| Model Number | ZW32-40.5 | Place of Origin | Zhejiang, China |
| Brand Name | QIHANG | Rated breaking current | 25kA / 31.5kA |
| Application | Interrupt current | Sequence of operations | OC-0.1s-CO-3S-CO-6s-CO-60s reduction |
| Shutdown time | ≤ 50 | Phase center distance | 460 ± 2 |
| Average breaking velocity | 1.4 ~ 1.8 |
Packaging and Delivery
| Selling Units | Single item |
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