New edition of ISO 14119: Safety of machinery

Safe Protective Doors New Version of ISO 14119 Describes the State of the Art

2025-07-17 Source: Press release | Translated by AI 1 min Reading Time

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The ISO has published a new edition of ISO 14119 "Safety of machinery—Interlocking devices associated with guards". Designers should familiarize themselves early with the innovations to ensure the CE conformity of their machines in the future.

For the safeguarding of protective doors with interlocking switches, ISO 14119 defines the design principles. Now there will be a new version of the standard.(Image: Pilz GmbH & Co. KG) — For the safeguarding of protective doors with interlocking switches, ISO 14119 defines the design principles. Now there will be a new version of the standard.
(Image: Pilz GmbH & Co. KG)

Since 2013, ISO 14119 has classified interlocking devices and regulated the requirements for the installation of separating safety devices. The new, now third edition ISO 14119:2024 specifies the procedure for securing walk-in doors: If there is a risk that machines may start unexpectedly, devices such as a manual reset function or presence detection systems must be available. Furthermore, appropriate means for escape and emergency unlocking should be provided.

Specifically, the new version prescribes the use of key transfer systems and the series connection of electromechanical contacts (number of devices that can be connected in series) to enhance safety on walk-in protective doors. Previously, these two topics were described in ISO TR 19837 (locking systems) and ISO TR 24119 (series connections). These innovations are now part of ISO 14119 in the new chapter 6.3.

Automatically Safe With the New Standard

"The publication of the new version in the EU Official Journal is still pending. However, there will be no further content changes to the new version," explains Jan Franck, member of the standardization team at Pilz GmbH & Co. KG. The automation company was involved in the development of the new edition.

"We therefore recommend already aligning the design of protective doors with ISO 14119:2024, as it represents the current state of the art. This ensures you are automatically on the safe side," advises the expert from Pilz.

Pilz will meet the requirements of the new edition with its safety switches and safety gate systems. This supports designers in developing systems compliant with standards and future-proof.

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Date: 08.12.2025

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