Large fire protection enclosure

Suitable for function preservation for up to 90 minutes*
Available assembled or disassembled
Integrated ventilation system


Fire-resistant large enclosure for housing electrical safety systems required by building regulations. The enclosure can be supplied either in individual parts on a pallet or fully assembled.
The large enclosure is smoke-tight (fire from inside) and offers a fire resistance of 90 minutes.

Proof of functional integrity must be provided and documented in accordance with MLAR 5.2.2 c).
It must be ensured that the function of the electrotechnical installations is guaranteed in case of fire for the necessary duration of the functional integrity, unless there is a building authority certificate of usability for the functional integrity.

Large fire protection enclosure PRIOELEC ESL BIG-Line

Integrated fan unit with smoke detector


  • Fire resistance 90 minutes, fire-resistant
  • Suitable for function preservation for up to 90 minutes*


  • Empty enclosure with high mechanical resistance
  • Integrated ventilation system, consisting of fan and smoke detector, installed ready for connection (230 V AC), cold smoke-tight
  • Stainless steel door hinges
  • Door opens into the enclosure, approx. 180° opening angle
  • 2-point door locking via swivelling lever with double-bit cylinder (exchangeable against house locking system)
  • All-round fire protection seal, foams up automatically in case of fire
  • Cable entry at top + bottom, for fret entry
  • Cable cooling duct
  • Fixing rail for mounting the unit support or mounting plate
  • Anti-tilt protection of the enclosure through fastening straps at the top
  • Integrated pedestal accessible from below, with removable front panel
  • Available in assembled or disassembled version (the installation site must be suitable for the weight of the housing, among other things)
  • Version available without fire dampers
  • Version available with fire dampers

Plinth with ground clearance for easy lifting


Material characteristic

  • Non-combustible panel with surface coating, classified A2 – s1, d0: non-combustible
  • Standard surface CPL
  • Standard colour light grey, similar to RAL 7035

* Depending on the fixtures and their arrangement.

Large fire protection enclosure PRIOELEC ESL BIG-Line

Large fire protection enclosure PRIOELEC ESL BIG-Line with fire-resistant supply/exhaust air system each NW 100 mm for connection to on-site fire-resistant fire protection duct system (ventilation system)

Scope of delivery

  • Fire protection enclosure PRIOELEC ESL BIG-Line disassembled or fully assembled on pallet
  • Cable cooling duct
  • Fastening material
File name
Product brochure.pdf
Datasheet PRIOELEC ESL BIG-Line.pdf
Text for tender PRIOELEC ESL BIG-Line.pdf.doc
Operating instructions PRIOELEC ESL BIG-Line.pdf
  • Rear wall for free installation
  • Installation on site by PRIORIT
  • Many PRIORIT surfaces possible
  • Additional ventilation set (only in combination with BSK-FK90-100)
  • Power supply unit for additional ventilation set

Fire damper BSK-FK90-100

  • Smoke-tight when closed, thermal release via fusible link at 72°C
  • Self-closing due to thermal release
  • Fire protection tested according to DIN EN 1366-2
  • Weight: 13.0 kg