52
AC circuit breaker
The device-function number identifying an AC circuit breaker.
Protection functions
Protection functions · 79
AC autoreclosing
A function coordinating a documented automatic reclosing sequence.
SLD / Schematic · 79
What it represents
An AC autoreclosing function coordinates a reclosing sequence for the associated switching device according to the chosen application and configuration. Its label identifies the function but does not specify shot count, timing, permissives or blocking conditions.
On a power drawing, keep this function reference connected to the selected equipment and its complete designation. A multifunction relay can implement several numbered functions. This entry explains the reference; it supplies no settings or commissioning procedure.
How to read it
- Identify the breaker and the protection functions associated with the sequence.
- Read permissive, blocking and lockout relationships in the selected scheme.
Information to show or reference
- Reference the controlled breaker.
- Identify the associated protection and controls.
- Link the documented sequence and blocking logic.
A distinction that matters
An autoreclose function and an automatic source-transfer function are different control arrangements.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Public reference table of ANSI device-function numbers
Public manufacturer table used to check the base function-number name.
IEEE C37.2-2022: power-system device function numbers
Normative publication reference for the device-function convention.
Relion 620: functions, codes and symbols
Public examples of manufacturer-specific function names and suffixes.
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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