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Class 3
30P

De Raat Safes

DRS Prisma III - EN 1143-1 Class 3 safe

DRS Prisma III – burglary- and fire-resistant safe (EN 1143-1 Class 3, ECB·S)

The DRS Prisma III is an EN 1143-1 Class 3 safe by De Raat, designed for applications where a reliable level of security is required, both in professional and residential environments. As a Class 3 safe, the DRS Prisma III is ECB·S certified in accordance with the European standard EN 1143-1, providing proven resistance against mechanical and thermal attack methods within the scope of this class.

In addition to burglary resistance, the DRS Prisma III is tested according to EN 15659 – LFS 30P. This certification ensures 30 minutes of fire protection for paper documents at temperatures of up to 850 °C and provides a basic level of protection in fire scenarios with limited fire risk.

The DRS Prisma III is constructively built with a multi-wall body and door, incorporating reinforcing armatures and a fibre-reinforced, concrete-based composite core. The door is locked on four sides: three sides with solid round bolts and, on the hinge side, a hook profile that engages into the body over the full height of the door. Attacks via the hinges or lateral prying therefore have no effect. External hinges allow a door opening angle of up to 180°, improving accessibility and ease of use.

The locking mechanism is operated by EN 1300-certified locks (Class B). Depending on the application, the safe can be equipped with a key lock, mechanical combination lock, electronic code lock, or a combination of these systems. Electronic locks may, if desired, be fitted with time delay or time window functions, providing additional control over access and operation.

Internally, the DRS Prisma III is functionally arranged with height-adjustable shelves. From model III/1 onwards, the safe is suitable for storing A4 folders. The range is standard prepared for floor anchoring. The DRS Prisma III is available in multiple models with varying dimensions and a capacity of approximately 12 to 307 litres. If desired, the safe can be supplied with a left-hand opening door, optional and made to order.

Thanks to the combination of EN 1143-1 Class 3 certification, LFS 30P fire protection, and a well-engineered door and locking construction, the DRS Prisma III by De Raat represents a reliable safe for situations where certified burglary resistance and basic fire protection are required.

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Additional information

Fireproof 30 min for paper
Burglary-resistant Class 3
Indication of Class 3 value retention: € 45 000 cash or € 90 000 valuables

  • Tested and certified by ECB.S in accordance with European standard EN 1143-1 in Grade III
  • Fire resistant tested 30 minutes for paper according to EN 15659 LFS 30P
  • Multi-walled construction of walls and door.
  • Four-sided locking: solid round bolts on three sides and a hook profile engaging into the body over the full height of the door.
  • Standard equipped with double bit key lock
  • Shelves adjustable in height
  • Prepared as standard for floor anchoring
  • Color: grey RAL7035

Model specifications

Burglary resistant class 3 Fire resistant 30P

Model Outer dimensions (mm) Internal dimensions (mm) Volume (L) Weight (kg) Shelves
1591 DRS Prisma III/0 H370 W410 D305 H270 W300 D145 12 L 112 kg 1
1592 DRS Prisma III/1 H450 W440 D485 H350 W330 D325 38 L 185 kg 1
1593 DRS Prisma III/2 H620 W440 D485 H520 W330 D325 56 L 235 kg 1
1594 DRS Prisma III/3 H800 W440 D485 H700 W330 D325 75 L 288 kg 1
1595 DRS Prisma III/4 H970 W440 D485 H870 W330 D325 93 L 338 kg 2
1596 DRS Prisma III/5 H1150 W590 D525 H1050 W480 D365 184 L 492 kg 2
1597 DRS Prisma III/6 H1500 W590 D525 H1400 W480 D365 245 L 617 kg 3
1598 DRS Prisma III/7 H1740 W590 D525 H1640 W480 D365 287 L 703 kg 4
1599 DRS Prisma III/8 H1850 W590 D525 H1750 W480 D365 307 L 742 kg 4

*External depth excluding hinges, handle, or lock.

Frequently asked questions

Atelier Boonen takes care of the delivery, installation and anchoring of safes entirely in-house. We never use external transporters or installers. Using specialised transport equipment, we deliver discreetly and safely, including to upper floors or hard-to-reach locations. Safes are always wrapped in opaque film and transported in unmarked vehicles to avoid curious eyes.

For safes up to 1000 kg, anchoring is mandatory under the European standard EN 1143-1. We carry out this anchoring carefully, using chemical anchors or adapted solutions depending on the substrate. Where necessary, we use stair climbers and protective materials to safeguard floors, walls and staircases.

The installation is always carried out safely, efficiently and with respect for the building. This guarantees you a professionally executed installation offering the strongest and most durable solution. In 95% of cases, delivery, installation and anchoring are included in the price — at no extra charge.

Read more about our approach: delivery and installation of safes

The best safe for your home doesn't exist — the best safe for your situation does. The right choice depends on what you want to protect, where you want to place the safe and how you use it day to day. For everyday items such as jewellery, documents or some cash, a burglar-resistant home safe of a lower security grade is often sufficient; if you also want protection against fire, choose a fire-resistant safe. If you prefer to keep the safe hidden, a wall safe or floor safe is an interesting option. Also pay attention to the insurable value per grade and to professional anchoring, and check whether your insurer has specific requirements. Our safe for the home page gives you a complete overview with concrete models.

Yes, it is entirely possible to install a safe in a built-in cupboard. We regularly carry out this type of installation. The simplest solution is usually to place the safe on the base of the cupboard and secure it both to the floor and to the wall. In many cases, this type of cupboard is fitted with a plinth. We can then manufacture a steel mounting plinth at the same height as the cupboard, or adapt the existing base to create a stable and suitable support. We can also cut out the back panel of the cupboard so that the safe can be positioned as close as possible to the wall. Installing a safe higher up inside the cupboard is also possible, depending on the type of wall and the weight of the safe. In that case, a plinth or mounting plate may be required to ensure a safe and reliable fixing.

Learn more about built-in, furniture and freestanding safe solutions

By default, safes have a right-hand door (DIN right). When standing in front of the safe, the hinges are on the right — or on the left if you have found yourself locked inside. It is not possible to change the opening direction of an existing safe.

For a limited number of models, a left-hand door (DIN left) is available. The hinges are then on the left. This configuration is never available from stock and must be ordered specifically. It is not available on all models — please ask us whether your chosen model can be supplied with a left-hand door.

Yes. As standard, our safes are prepared for anchoring through holes in the base and — depending on the model — in the back wall. If this does not suit your situation, for example with underfloor heating, a wooden floor or a specific setup, we can provide additional anchoring points where needed. Simply mention this when placing your order: the adaptation is carried out at the factory or in our own workshop, without compromising the safe's certification. We then take care of the delivery, installation and anchoring ourselves.

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