Security fitting
The protective fitting is intended to protect the profile cylinder and the mortise lock on a door against unauthorized mechanical manipulation with the aim of penetrating the room secured by the door ( DIN 18257).
Resistance classes
DIN 18257 divides security fittings into resistance classes from ES 0 to ES 3. ES stands for burglar-resistant security hardware.
| DIN 18257 | Resistance class |
|---|---|
| ES 0 | Slightly burglar-resistant |
| IT 1 | Burglar-resistant |
| ES 2 | Strongly burglar-resistant |
| IT 3 | Extremely strong burglar-resistant |
The ES 0 does not require drilling protection and does not offer sufficient burglar resistance. It makes sense to use security fittings with cylinder covers or cylinder protection systems.