SIEMENS SION Vacuum Circuit-Breaker User's Manual
Summary
The SION vacuum circuit-breaker is a compact, high-performance solution for medium-voltage switchgear panels (7.2 to 31.5 kV). Engineered with identical dimensions across various voltage levels and current ratings, it enables highly innovative substation designs and efficient retrofits while handling fault currents up to 40 kA. This manual provides detailed guidance on system integration, flexible accessory options, and installation procedures. It is designed for electrical engineers, power transmission experts, and switchgear integrators needing a reliable, space-saving solution that adapts perfectly to any existing or planned substation layout.
Page 1 Text Content
A perfect fi t for every substation:
SION vacuum circuit-breaker. The new line in medium voltage.
Power Transmission and Distribution
Page Summary Contents For SIEMENS SION Vacuum Circuit-Breaker User's Manual
Manual Details
| Brand | Siemens |
|---|---|
| Pages | 12 |
| File Size | 769.17 KB |
| Published | May 31, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What is the primary advantage of SION's design regarding switchgear panel size?
It features a low overall depth, allowing innovative panel designs with smaller sizes compared to fully insulated circuit-breakers.
How flexible are the dimensions for integration into existing substations?
SION offers identical dimensions across various voltage levels and provides choices for pole center distances (150 mm to 275 mm) and widths across flats, ensuring a perfect fit.
What is the maximum short-circuit current rating available?
The SION circuit breaker can break short-circuit currents up to 40 kA.
Does the design facilitate retrofitting or modifications in existing switchgear?
Yes, its simple and safely accessible low-voltage interface provides freedom for modifications, especially valuable for retrofit projects. It also features a flat floor area during installation/transport.