SIQuench: Arc fault protection beyond the standards
The occurrence of an internal arc fault in a well-designed, type-tested, correctly installed and operated switchgear is improbable – but not impossible – mostly linked to human-related errors or environmental causes.
![Siemens SIQuench arc quenching device Siemens SIQuench arc quenching device](https://assets.new.siemens.com/siemens/assets/api/uuid:2f9ed8b4-0fce-4854-8b99-2fd01d210bad/width:100/quality:low/Siemens-SIQuench-arc-quenching-device.gif)
The occurrence of an internal arc fault in a well-designed, type-tested, correctly installed and operated switchgear is improbable – but not impossible – mostly linked to human-related errors or environmental causes.