40.5KV Indoor Circuit Breaker Vacuum Interrupter
This 40.5KV vacuum interrupter is designed for use in indoor circuit breakers. The component is critical for interrupting electrical arcs in a vacuum environment, ensuring safe and reliable operation of the circuit breaker.
Technical Specifications
Overview
High-Performance Vacuum Interrupter
This 40.5KV vacuum interrupter is a critical core component designed for medium-voltage indoor circuit breakers. Utilizing advanced vacuum arc extinguishing technology with a corrugated ceramic insulation shell and copper-tungsten alloy contacts, it ensures reliable power distribution and rapid fault interruption. Engineered for durability, it offers a long service life, low maintenance requirements, and superior dielectric strength for demanding industrial and power utility applications.
Key Metrics
Performance Highlights
40.5 KV
Rated Voltage
2,000 A
Max Rated Current
31.5 KA
Max Short-circuit Breaking Current
10,000 Ops
Mechanical Life
Electrical Ratings
Electrical Specifications
| Parameter | Value |
|---|---|
| Rated Frequency | 50/60 Hz |
| Rated Short-time Power Frequency Withstand Voltage (1min) | 95 KV |
| Rated Lightning Impulse Withstand Voltage | 185 KV |
| Rated Short-circuit Making Current (Peak) | 63/80 KA |
| Rated Duration of Short-circuit | 4 s |
| Circuit Resistance | ≤20 Micro ohms |
Mechanical Requirements
Mechanical Specifications
| Parameter | Value |
|---|---|
| Contact Stroke | 18±1 mm |
| Opening Speed (Average) | 1.6±0.2 m/Sec |
| Closing Speed (Average) | 0.75±0.2 m/Sec |
| Rated Contact Compressive Force | 3100±200 N |
| Max Contact Bounce (Closing) | ≤2 ms |
| Moving Part Weight | ≤4 kg |
Compliance & Usage
Standards Compliance
IEC 62271-100GB 8738-2008Class E2
- Suitable Applications
- Power DistributionMetallurgyMiningPetroleumChemical IndustryRailwayCommunications
