Product introduction
The Aierway 40.5KV Ejection Type Vacuum Circuit Breaker is a state-of-the-art, medium-voltage protection device engineered for high reliability, safety, and ease of maintenance in demanding electrical distribution systems. Featuring a unique ejection mechanism, this breaker combines advanced vacuum interruption technology with robust mechanical design to deliver superior performance in industrial, utility, and infrastructure applications.
Key Features & Advantages
1. Ejection Mechanism Design
-Safe & Effortless Operation:** The ejection system allows for smooth, controlled insertion and withdrawal of the breaker from the switchgear compartment with minimal physical effort.
-Clear Position Indication:** Features distinct, mechanically interlocked positions: **CONNECTED, TEST, DISCONNECTED, and EJECTED.** This ensures visual confirmation of the breaker’s status, preventing operational errors.
2. 40.5KV Rated Voltage Class
-Designed for robust performance in standard 35kV/40.5kV distribution networks, meeting the requirements of both IEC (e.g., IEC 62271-100) and relevant ANSI/GB standards.
-Suitable for primary substations, large industrial plants, mining operations, and renewable energy integration points.
Main Technical Parameters
| Specification | Value |
|---|---|
| Rated Voltage | 40.5kV |
| Rated Current | 2000A, 2500A |
| Power Frequency Withstand | 95kV |
| Lightning Impulse Withstand | 185kV |
| Rated Frequency | 50Hz |
| Rated Short-Circuit Breaking Current | 31.5kA |
| Rated Short-Circuit Breaking Times | 30 Times |
| Rated Peak Withstand Current | 80kA |
| Rated Single Capacitor Bank Breaking Current | 630A |
| Rated Back-to-Back Capacitor Bank Breaking Current | 400A |
| Loop Resistance under Rated Contact Force | ≤25 ~ 30Ω |
| Contact Self-Closing Force | 200±60N |
| Specification | Value |
|---|---|
| Contact opening Distance | 20±1mm |
| Rated Over-Travel | 5±1mm |
| Average Opening Speed | 1.7±0.2m/s |
| Average Closing Speed | 0.75±0.2m/s |
| Rated Contact Force | 3600±200N |
| Contact Closing Bounce Time | ≤3ms |
| Opening Contact Rebound Amplitude | ≤2mm |
Outline and dimensions of installation





