0102030405
Vacuum Interrupter TD-12/630-25 (2D88) for Outdoor Circuit Breakers
2025-07-23
The TD-12/630-25 (2D88) vacuum interrupter is engineered specifically for outdoor high-voltage circuit breakers, designed to deliver reliable arc extinCtion and current interruption in 12kV outdoor power systems.
Core Design & Weather Resistance
Built with a hermetically sealed ceramic envelope, the interrupter integrates a copper-chromium (CuCr) contact system to ensure stable vacuum integrity (≤10⁻⁴ Pa). Its outer casing features anti-UV and corrosion-resistant coating, enabling operation in harsh outdoor conditions:
- Temperature range: -40°C to +55°C
- Protection against rain, dust, and salt spray (compliant with IEC 62271-303 outdoor standards)
- Resistance to mechanical Vibration (up to 30Hz), suitable for installation in windy or industrial areas
Performance & Interruption Capability
- Rated Parameters: 12kV rated voltage, 630A continuous current, and 25kA short-circuit breaking current—ideal for handling transient grid faults.
- Arc Extinction: Vacuum medium enables fast arc quenching (≤2 cycles) without gas or oil, minimizing energy loss during interruption.
- Longevity: Electrical life exceeds 30 short-circuit breaking operations and 10,000 mechanical operations, reducing replacement frequency.
Compatibility & Integration
Designed with standardized mounting dimensions, the TD-12/630-25 (2D88) fits most 12kV outdoor circuit breaker models, including pole-mounted, box-type, and modular switchgear. Its low contact resistance (≤100μΩ) ensures efficient current transmission, while the compact size (φ88mm ceramic diameter) simplifies integration into space-constrained outdoor enclosures.
Application Scope
Suitable for outdoor 12kV power networks such as:
- Rural and urban overhead distribution lines
- Outdoor substations and transformer stations
- Renewable energy grid connections (e.g., solar farms, wind parks)
- Industrial outdoor power supply systems (mining, ports)
Operational Advantages
- Maintenance-Free: Vacuum seal eliminates the need for refueling or gas replenishment, reducing on-site upkeep.
- Safety: No flammable materials (unlike oil-filled interrupters), lowering fire risks in outdoor installations.
- Environmental Adaptability: Stable performance in high humidity, extreme temperatures, and polluted environments, ensuring grid reliability year-round.