ZW7-40.5 Outdoor Vacuum Circuit Breaker
2.Frequency:50Hz
3.Rated Current:1250,1600,2000A
4.Adopting modularized spring-operated mechanism for greater versatility.
5.Miniaturized design, more concise and reasonable structure.
6.Reinforced bracket column structure, strong seismic resistance.
7.Adoption of large creepage distance porcelain sleeve, stronger anti-fouling ability.
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
1.ZW7-40.5 Outdoor Vacuum Circuit Breaker: Reliable Power Protection for Demanding Environments
When you need a robust solution to safeguard high-voltage power networks, the ZW7-40.5 Outdoor Vacuum Circuit Breaker stands out as a top-tier choice. Designed for 40.5kV systems, this circuit breaker combines advanced vacuum interruption technology with a modular, weather-resistant design to ensure reliable performance in extreme temperatures, seismic zones, and polluted environments. With certifications like IEC 62271 and IEEE C37.04, it’s trusted by utilities and industries worldwide to minimize downtime and maximize grid stability.
2.Technical Specifications
- Rated Voltage: 40.5kV
- Frequency: 50Hz
- Rated Current: 1250A, 1600A, 2000A
- Mechanism: Modular spring-operated
- Standards Compliance: IEC 62271-100, IEEE C37.04
- Structure: It can have middle CT and side installed CT(if you need the CT for circuit breaker, please inform us about it).
| No. | Parameter name | Unit | Data | ||
| 1 | Rated voltage | KV | 40.5 | ||
| 2 | Rated current | A | 1250, 1600 | ||
| 3 | Rated frequency | Hz | 50 | ||
| 4 | Rated short-circuit breaking current | KA | 25,31.5 | ||
| 5 | Rated-short-circuit making current | KA | 63,80 | ||
| 6 | Rated peak withstand current | KA | 63,80 | ||
| 7 | Rated short-time withstand current | KA | 25,31.5 | ||
| 8 | Rated short-circuit duration | S | 4 | ||
| 9 | Standard Operating sequence | 00.3S-C/0180S-C/O | |||
| 10 | Short-circuit breaking currents under conditions of heterogeneous ground faults | KA | 21.93, 27.6 | ||
| 11 | Rated insulating level | 1min power frequency withstand voltage | dry run | KV | 95 |
| wet run | KV | 85 | |||
| Lightning impulse withstand voltage(peak) | KV | 185 | |||
| 12 | On-off time | Ms | <100 | ||
| 13 | Mechanical endurance | times | 10000 | ||
| 14 | Breaking operations of rated short circuit breaking current | times | 20 | ||
3.Key Features & Advantages
1. Built to Withstand Extreme Conditions
The product uses a reinforced bracket column structure to resist earthquakes (up to IEEE 693 standards) and a large-creepage porcelain sleeve to prevent flashovers in dusty or humid areas. Its corrosion-resistant enclosure ensures longevity in coastal or industrial zones.
2. Modular Design for Easy Maintenance
A miniaturized, modular spring mechanism reduces operational complexity. Components can be quickly replaced onsite, cutting maintenance time by 30% compared to traditional models.
3. Energy-Efficient Performance
Vacuum interruption technology minimizes arc energy loss, achieving 99.9% current-breaking efficiency. This lowers operating costs and extends the device’s lifespan beyond 30 years.
4.Ideal Applications
- Power Grids: Ensures stable transmission in urban and rural networks.
- Railways: Protects electrified rail systems from overloads.
- Renewable Energy Farms: Integrates seamlessly with solar/wind substations.
- Industrial Plants: Safeguards heavy machinery in mining, steel, or chemical industries.
5.How It Works？
The breaker uses a vacuum interrupter to extinguish arcs during fault conditions. When a surge occurs, its spring-operated mechanism isolates the circuit within milliseconds, preventing damage to downstream equipment. The sealed design eliminates SF6 gas, making it eco-friendly.
6.Manufacturing & Quality Assurance
Every ZW7-40.5 Outdoor Vacuum Circuit Breaker undergoes rigorous testing under ISO 9001, 14001, and 45001 guidelines. Our facilities use robotic welding and automated assembly to ensure precision. Key components are tested for:
- Mechanical endurance: 10,000+ operations.
- Dielectric strength: 85kV/1min power-frequency withstand voltage.
- Environmental simulation: Salt spray, UV exposure, and thermal cycling tests.
7.Why Choose Us?
- Certified Excellence: ISO 9001, 14001, 45001.
- Global Support: 24/7 technical assistance and spare parts logistics.
- Custom Solutions: Tailored configurations for seismic zones (e.g., Japan) or desert climates (e.g., Middle East).
- Proven Expertise: Backed by 15+ patents and participation in China’s 863 Program.
8.FAQ
1. Does the ZW7-40.5 comply with Related international standards?
Yes, it meets IEC standards for for high-voltage circuit breakers.
2. How often should maintenance be performed?
Routine inspections every 5 years; no component replacement needed under normal conditions.
3. Can it operate in -40°C environments?
Yes, its low-temperature alloy mechanism ensures reliable performance from -40°C to +55°C.
4. Is remote monitoring supported?
Optional IoT sensors can be added for real-time status updates via SCADA systems.
5. What’s the lead time for bulk orders?
Typically 5–7 weeks for 100+ units.
9.Contact Us
Email: xaxd_electric@163.com
Let our engineers help you design a ZW7-40.5 Outdoor Vacuum Circuit Breaker solution that fits your grid’s needs.
10.Factory Show
11.Equipment Display
12.Application Cases
State Grid systems, power engineering, steel and metallurgy, petrochemicals, rail transportation, energy and water conservancy, construction, environmental protection, and renewable energy sectors
13.Team and Exhibition
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