KEY HOLD
Latched key-operated switch
A latched key-operated switch retains its commanded position according to the selected mechanism.
Schematic
IEEE / ANSI · KEY HOLD
ANSI/IEEE Latched key-operated switch form
IEEE-library form of latched key-operated switch: a latched key-operated switch retains its commanded position according to the selected mechanism.
In plain English
What does ANSI/IEEE Latched key-operated switch form mean?
This reference locates latched key-operated switch in Autodesk's IEEE-oriented miscellaneous switches family. A latched key-operated switch retains its commanded position according to the selected mechanism. The drawing should specify how the latched position is released and where the key is removable. The public library uses HPB11KSL for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
A simple example
Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.
What the drawings help you do
Separate the mechanical retention from any electrical seal-in circuit. Mechanically latched operation is different from a relay holding circuit. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
This particular reference
IEEE-library form of latched key-operated switch: a latched key-operated switch retains its commanded position according to the selected mechanism. Mechanically latched operation is different from a relay holding circuit.
- Normally open / normally closed
- The contact state in the normal condition defined for the drawing.
- Coil
- A wound conductor that can produce a magnetic field when energised.
- Signal
- Electrical information passed between devices, rather than necessarily the main power supply.
Read the source: Autodesk IEEE Symbol Preview — Miscellaneous Switches
IEEE / ANSI · Key Switch Latched, Normally Open
Autodesk IEEE Symbol Preview: Miscellaneous Switches, block HPB11KSL. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · KEY HOLD
What it represents
This reference locates latched key-operated switch in Autodesk's IEEE-oriented miscellaneous switches family. A latched key-operated switch retains its commanded position according to the selected mechanism. The drawing should specify how the latched position is released and where the key is removable. The public library uses HPB11KSL for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.
Separate the mechanical retention from any electrical seal-in circuit. Mechanically latched operation is different from a relay holding circuit. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.
How to read it
- Separate the mechanical retention from any electrical seal-in circuit.
- The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.
Information to show or reference
- List stable positions
- Show reset action
- Document key-removal constraints
A distinction that matters
Mechanically latched operation is different from a relay holding circuit.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEEE Symbol Preview — Miscellaneous Switches
Public IEEE-oriented Miscellaneous Switches table explicitly lists HPB11KSL as Key Switch Latched, Normally Open. This supports the vendor convention context, not reproduction of the publisher graphic.
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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