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EN1300 Lock Configuration Standards

Amateur safe technicians or locksmiths can make serious errors when it comes to certified safe and vault locking devices.

Fitting an uncertified lock or a lock that is not certified in the correct class for the particular safe or vault will invalidate the units certification.

Below is chart which outlines the number and type of locks that must be used with various grades of safes and vaults in order for them to remain certified. 

Burglary Resistance Grade (as per EN 1143-1)

Lock Configuration as per EN 1300 Number of Locks Lock Class

Safe or Vault Grade Number Of Locks Required Lock Class Per EN1300
0 1 A
I 1 A
II 1 A
III 1 B
IV 2 B
V 2 B
VI 2 C
VII 2 C
VIII 2 C
IX 2 C
X 2 C
XI 2 (3) D (C)
XII 2 (3) D (C)
XIII 3 D