EN 12209 Mechanically operated locks and latching devices
The European umbrella standard for lock cases and latches, with an eight-digit classification code covering durability, door mass, suitability for fire doors, security, corrosion and operating temperature.
What it actually decides
- Cycle grades (0–8) and the corresponding duty
- Whether the lock is suitable for use on fire/smoke door assemblies
- Security grade and corrosion resistance
- Centre distance and backset ranges recognised across Europe
Applies to these lock types
Euro profile cylinder in a mortise case (DIN) · Multipoint locking system (uPVC / composite) · Korean push-pull digital lock base (mortise) · Singapore HDB main-door mortise set and metal gate lock
Why a retrofit designer cares
If the replacement lock loses the fire-door suitability of the original, the doorset's certification is broken even though everything fits mechanically.