IEC · MAG

IEC magnetic proximity sensor: magnetic proximity switch, normally closed

Magnetic proximity sensor form: Magnetic Proximity Switch, Normally Closed.

In plain English

What does IEC magnetic proximity sensor: magnetic proximity switch, normally closed mean?

A magnetic proximity sensor responds to a magnetic field or a target carrying the specified magnet. This entry identifies the magnetic proximity switch, normally closed form in the publisher's IEC-context family.

A simple example

A piston magnet or door-mounted magnet can provide a position indication without direct mechanical contact. The normally-closed designation starts with a conducting output or closed contact in the documented reference condition; operation changes that state.

Identify the device and formRead the connections and stateCheck the equipment reference
A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.

What the drawings help you do

A magnetic sensor can contain a reed contact or powered electronics. The actual output, field orientation and contact ratings must come from the selected device.

This particular reference

Magnetic proximity sensor form: Magnetic Proximity Switch, Normally Closed. This entry adds the magnetic proximity switch, normally closed detail to the broader magnetic proximity sensor family. A magnetic sensor can contain a reed contact or powered electronics. The actual output, field orientation and contact ratings must come from the selected device.

Normally open / normally closed
The contact state in the normal condition defined for the drawing.
Signal
Electrical information passed between devices, rather than necessarily the main power supply.
Rating
A value stating the conditions for which equipment is specified.

Read the source: AutoCAD Electrical: Magnetic proximity switches

IEC · Magnetic Proximity Switch, Normally Closed

Autodesk IEC-60617 Symbol Preview: Magnetic Switches, HPX12M / VPX12M. This identifies the publisher's library context; exact IEC graphics and database identities are not asserted.

Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.

Schematic · MAGIEC magnetic proximity sensor: magnetic proximity switch, normally closed: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

What it represents

A magnetic proximity sensor responds to a magnetic field or a target carrying the specified magnet. This entry identifies the magnetic proximity switch, normally closed form in the publisher's IEC-context family.

A piston magnet or door-mounted magnet can provide a position indication without direct mechanical contact. The normally-closed designation starts with a conducting output or closed contact in the documented reference condition; operation changes that state.

A magnetic sensor can contain a reed contact or powered electronics. The actual output, field orientation and contact ratings must come from the selected device.

How to read it

  • The normally-closed designation starts with a conducting output or closed contact in the documented reference condition; operation changes that state.
  • A magnetic sensor can contain a reed contact or powered electronics. The actual output, field orientation and contact ratings must come from the selected device.

Information to show or reference

  • Identify the target, sensing mode and expected normal condition.
  • Label supply, output and connector pins from the actual device diagram.
  • Reference output circuit type, operating range and controller input.

A distinction that matters

This entry adds the magnetic proximity switch, normally closed detail to the broader magnetic proximity sensor family. A magnetic sensor can contain a reed contact or powered electronics. The actual output, field orientation and contact ratings must come from the selected device.

Sources you can follow

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

AutoCAD Electrical: Magnetic proximity switches

Public Magnetic Switches table explicitly lists HPX12M / VPX12M with this operating or connection form. Vendor graphics are linked, not copied.

Autodesk · Public reference checked 13 October 2026 · Link only

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: 28 October 2026

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