Grade 4 safes are certified in accordance with the European standard EN 1143-1 and belong to the higher security segment for the storage of valuable goods and sensitive documents. This standard evaluates resistance to burglary attempts using mechanical, electrical and thermal tools, tested under strictly controlled conditions by independent certification bodies such as ECB-S.
EN 1143-1 Grade 4 is applied where an increased level of security is required, both in professional environments and for private use. The classification serves as an objective reference for insurability, with the exact conditions always determined by the insurer. Atelier Boonen advises and supplies solutions across Belgium.
Within EN 1143-1, burglary resistance is expressed in Resistance Units (RU). For Grade 4, the resistance level is 120 RU (partial access) and 180 RU (full access).
To obtain Grade 4 certification, safes must be equipped with at least two locks, each certified according to EN 1300, Class B or a higher class. Depending on the model, this may involve a combination of mechanical and electronic locking systems.
The EN 1143-1 standard relates exclusively to burglary resistance. Fire resistance is not included by default. Within Grade 4, there are therefore both burglary-resistant safes only and models that have been additionally tested for fire protection. For customers specifically searching for a fire resistant Grade 4 safe or a Grade 4 safe with 60 minutes of fire protection, selected models offer, alongside burglary certification, a separate fire test for document protection.