Fail-safe vs fail-secure locking

According to German hardware specialist, Fuhr, as smart locking and powered access control grow in popularity, one topic is becoming increasingly important – understanding the difference between fail-safe and fail-secure locking, and when to use each.

In simple terms, a fail-safe lock will automatically unlock in the event of a power failure, ensuring safe exit for occupants. This is critical for life safety applications such as escape routes in public buildings, where building regulations or EN 1125 and EN 179 standards may require it.

A fail-secure lock, by contrast, will stay locked without power, protecting against unauthorised entry. This is often the preferred choice for securing high-value areas or residential doors.

Paul balfe, Fuhr UK’s business development manager, explained: “The key to getting this decision right is understanding how the door will be used – both in day-to-day operation and in an emergency. The wrong choice can lead to costly retrofits, delays, or worse, non-compliance with building regulations.”

Real-world scenarios vary widely. A staff entrance to a secure facility might require fail-secure operation, while an adjacent fire escape door could need fail-safe release. In multi-door projects, both may be needed – which is why Fuhr’s motorised locks can be configured for either mode, sometimes even within the same installation.

Paul continued: “The conversation needs to happen at the start of the project, ideally when access control, automation and integration with building management systems are first being considered. It’s far easier and more cost-effective to choose the right lock early than to redesign later.”

Paul adds that Fuhr’s product range is designed to make this process simpler for specifiers and fabricators. Whether the requirement is for a fully motorised multipoint lock, automatic locking, or a panic exit system. Fuhr’s modular designs mean the same basic routing can be adapted for different modes and standards without redesigning the door.

From helping to interpret building regulations, to advising on access control compatibility or providing guidance on installation, Fuhr offers technical support at every stage.