NO
Normally open contact
A contact shown open in the normal state defined for its device.
Schematic
Protection functions · 33
Position switch
Changes an electrical indication when a mechanism reaches a defined physical position.
SLD / Schematic · 33
What it represents
Changes an electrical indication when a mechanism reaches a defined physical position.
In a drafting package, connect this reference to the mechanism position and contact's normal-state convention. The associated drawing should trace the position indication and permissive circuits; the number identifies the role and does not specify the terminal arrangement, ratings or operating settings.
How to read it
- Identify the mechanism position and contact's normal-state convention.
- Trace the position indication and permissive circuits.
Information to show or reference
- Label the mechanism position and contact's normal-state convention.
- Cross-reference the position indication and permissive circuits.
- Identify the device tag, manual revision and logic drawing that define this implementation.
A distinction that matters
A position switch identifies position, not necessarily that an electrically commanded operation has succeeded.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
ANSI device-number and suffix reference table
Public manufacturer number/name association. Drafting explanations are independently written.
IEEE C37.2-2022: power-system device function numbers
Normative device-number publication; exact edition wording and compliance require the licensed standard.
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.