As a professional manufacturer of the ZW20 Series Outdoor SF6 Vacuum Circuit Breaker in China, Comewill this high quality breaker packs advanced vacuum arc extinguishing tech and uses SF6 gas as the insulating medium. We’ve integrated Japanese Toshiba VSP5 structural technology for its gas sealing, insulation, and explosion-proof capabilities—so the sealing is top-notch, no SF6 gas leaks at all, and it runs reliably no matter the environmental conditions.
Its spring-operated mechanism is compact, with optimizations for better reliability and stability. We’ve used a direct chain drive and multi-stage tripping system, which makes its performance way better than traditional spring mechanisms. The main circuit features an internal expansion and external contraction bracelet structure—this design keeps contact resistance low and reduces temperature rise during operation.
This ZW20 Series Outdoor SF6 Vacuum Circuit Breaker’s case uses VSP5 gas-sealed, explosion-proof and insulating structure technology—we’ve also upgraded the sealing performance of the inlet and outlet conduits. The whole unit boasts top-tier sealing: internal SF6 gas won’t leak at all, and it works steadily no matter the harsh environmental conditions.
Its spring-operated mechanism has been miniaturized and optimized for maximum reliability and stability. We’ve adopted a direct-acting chain main drive and multi-stage decoupling system, so its operational reliability and stability are far superior to traditional domestic spring-operated mechanisms—like a several-fold upgrade in performance.
The main circuit’s shaft and sleeve connection uses an inward-closing, outward-tensioning table chain structure. This design keeps main circuit contact resistance ultra-low, resulting in minimal temperature rise during operation.
ZW20 Series Outdoor SF6 Vacuum Circuit Breaker made in China also comes with extra practical functions: overcurrent protection, a mechanism spring energy storage indicator, and an aviation socket for secondary electrical connections. It’s super easy to pair with intelligent controllers.
Plus, this product is fully compatible with controllers featuring excellent recloser functionality—perfectly meeting the requirements of power distribution automation systems.
| Item | Unit | Data |
| Rated Voltage | kV | 12 |
| Rated Frequency | Hz | 50 |
| Rated Current | A | 630 |
| Rated Short-Circuit Breaking Current | kA | 20 |
| Rated Making Current (Peak) | kA | 50 |
| Rated Dynamic Current (Peak) | kA | 50 |
| 4s Rated Short-Time Withstand Current | kA | 20 |
| Rated Operating Sequence |
|
Open–0.3s–Close Open–180s–Close Open |
| Rated Energy Storage Motor Voltage | V | AC220 |
| Maximum/MinimumEnergy Storage Motor Voltage | V | AC242/AC18 |
We’ve gone over this ZW20 Series Outdoor SF6 Vacuum Circuit Breaker’s key features, technical specs, and where it works best in detail here. To make sure you get the right one—including any custom tweaks—keep these simple points in mind when ordering:
Spell out your basic needs: Let us know the rated voltage, current, and short-circuit breaking current you require. If you want extras like isolating switches or communication functions, just mention them clearly.
Share your on-site conditions: Tell us about the environment where the breaker will be used—things like altitude, temperature range, and pollution level. This ensures it holds up reliably in your specific setup.
Mention any custom requests: If you need non-standard setups, extra protection features, or want it to work with a specific control system, give us as many details as you can.
Need a tailored solution, unique configuration, or have questions about using this breaker in non-standard scenarios? Our technical team is here to help you get exactly what you need. Just reach out today to chat through your requirements.
Address
No.777 Wanweng Road, Wengyang Sub-district, Yueqing City, Wenzhou City, Zhejiang Province, China
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