Q1020604
Manually released latching device
This qualifier identifies release of a latching mechanism by manual action.
IEC
IEEE / ANSI · Q1020604
ANSI/IEEE Manually released latching device form
IEEE-library form of manually released latching device: this qualifier identifies release of a latching mechanism by manual action.
In plain English
What does ANSI/IEEE Manually released latching device form mean?
This reference locates manually released latching device in Autodesk's IEEE-oriented mechanical controls, latching device family. This additional drawing mark identifies release of a latching mechanism by manual action. The retained mechanism is released through a documented manual action. Resetting the mechanism and removing electrical supply can be different events. The public library uses Q1020604 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
Show the manual release and the resulting position relationship. Where the latch also reports status, identify that feedback as a separate contact or sensor interface. Show the reset or release device and the resulting rest condition. Manual unlatching differs from de-energising an ordinary relay coil. 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 manually released latching device: this additional drawing mark identifies release of a latching mechanism by manual action. Manual unlatching differs from de-energising an ordinary relay coil.
- 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: Mechanical Controls, Latching Device
IEEE / ANSI · Latch Device with Manual Unlatching
Autodesk IEEE Symbol Preview: Mechanical Controls, Latching Device, block Q1020604. 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 · Q1020604
What it represents
This reference locates manually released latching device in Autodesk's IEEE-oriented mechanical controls, latching device family. This qualifier identifies release of a latching mechanism by manual action. The retained mechanism is released through a documented manual action. Resetting the mechanism and removing electrical supply can be different events. The public library uses Q1020604 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.
Show the manual release and the resulting position relationship. Where the latch also reports status, identify that feedback as a separate contact or sensor interface. Show the reset or release device and the resulting rest condition. Manual unlatching differs from de-energising an ordinary relay coil. 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
- Show the reset or release device and the resulting rest condition.
- Manual unlatching differs from de-energising an ordinary relay coil.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- Show the reset or release device and the resulting rest condition.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
Manual unlatching differs from de-energising an ordinary relay coil.
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: Mechanical Controls, Latching Device
Public IEEE-oriented Mechanical Controls, Latching Device table explicitly lists Q1020604 as Latch Device with Manual Unlatching. 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.
Explore related references
Put the reference into a drawing workflow.
Elora Grid helps electrical teams work with drawings, specifications and equipment information. Explore the drafting workflow or join the early-access waitlist.