This draft standard applies to multiple locks with catch and bolt including multiple locks with selflocking device. These multiple locks can habe a locking device with levers or cylinders. The document is an additional standard to DIN EN 12209 as the European standards do not devine measurements. It does not contain requirements which would be in contrast to EN 12209.
DIN 18251-3:2002 history
1970DIN 18251-3 E:2002-03 Locks - Mortise locks - Part 3: Mortise locks as multipoint locks
2002DIN 18251-3:2002 Locks - Mortise locks - Part 3: Mortise locks as multipoint locks