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 in accordance with MLAR.

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