3AE-SION vacuum circuit breaker is the latest generation of products developed and produced by Siemens in combination with 30 years of vacuum product design and operation experience and for the Chinese power market. It integrates the latest German technology and represents the latest development direction of vacuum switches. The circuit breaker adopts large creepage insulation design and is equipped with the latest developed large creepage vacuum arc chamber, which is more suitable for the technical standards and full insulation operating conditions of China's power system.
This manual describes the Siemens 3AE‑SION vacuum circuit breaker, a compact, modular device for 7.2‑24 kV switchgear. It covers technical parameters, mechanical and electrical features, and environmental limits, and includes detailed secondary wiring diagrams for both fixed and draw‑out types.
The document also provides ordering information, optional accessories, and guidance on the operation of trip units, auxiliary switches, and the motor‑driven operating mechanism, helping users install, commission and maintain the breaker safely. This manual is written in Chinese.
| Rated Voltage | 7.2‑24 kV |
|---|---|
| Maximum Short‑Circuit Current | 40 kA |
| Rated Current (example) | 800 A – 4000 A |
| Opening Time | <65 ms |
| Closing Time | ≤75 ms |
| Operating Temperature Range | -15 °C to +40 °C |
| Relative Humidity Limit | ≤95 % daily, ≤90 % monthly |
The 3AE‑SION can interrupt currents up to 40 kA.
The breaker operates between –15 °C and +40 °C.
Average daily humidity must not exceed 95 % and monthly average not exceed 90 %.