Key-controlled two-way latching device

What it represents

This form identifies a two-way latch using a documented key operation. A key controls the movement or release of the two-way latching arrangement. Its role is mechanical access/operation, while the associated electrical circuit retains its own contact logic.

Keep key identifiers and device tags consistent with the interlocking schedule. A single keyed-latch graphic cannot describe all exchanges in a multi-key sequence.

How to read it

• Cross-reference the key arrangement and retained mechanism positions.
• A keyed latch does not establish a complete trapped-key sequence by itself.

Information to show or reference

• Identify the associated device, circuit or diagram boundary.
• Cross-reference the key arrangement and retained mechanism positions.
• Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.

Sources you can follow

These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.

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.

Entry JSON · Entry Markdown · Last editorial update: 14 October 2026