PE
Protective earth
An identified connection serving the protective earthing function.
SLD / Schematic
Symbols · ES
Earthing switch
A switch used to connect an identified circuit section to earth.
SLD / Schematic · ES
What it represents
An earthing-switch representation identifies a switching connection between an electrical circuit section and earth. This is a switching device, not merely an earth-reference mark. On an SLD, its location helps explain which part of the switchgear or circuit is connected to earth when the device operates.
Switchgear documentation can include earthing-switch position indications and interlocks with other devices. Those relationships need to be shown or referenced separately. The generic concept here does not establish operating sequence, duty, interlock logic or permission to operate equipment.
How to read it
- Identify the circuit section and earth connection on either side of the switching element.
- Follow interlock and position references in the equipment documentation.
Information to show or reference
- Identify the associated panel or circuit.
- Reference the specified device duty.
- Cross-reference interlocks and position indication.
A distinction that matters
A protective-earth mark identifies a connection or function. An earthing switch identifies equipment that makes a switching connection.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Relion 620: functions, codes and symbols
Public earthing-switch control and indication functions.
Secondary-distribution switchgear and ring main units
Manufacturer switchgear equipment context.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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