For several years we have been holding stock of and selling Fire Rated Junction Boxes.
From the small FK0402 2.5mm Junction Box to the FK6505 50Sq mm “Tunnel” Junction Box.
The junction boxes are approved for intrinsic fire resistance and insulation integrity. The come with an ingress rating of IP66/65 (depending on the cable entry system and junction box used) which is important where there may be a sprinkler system.
We have 2 types distinct boxes made of either Thermoplastic or Sheet Steel. The Thermoplastic is for most applications fine as it exceeds the standards of popular fire cables used such as FP200. Where an FP400 or equivalent is being used, the sheet steel box is closer to the fire rated properties than the thermoplastic and we have certification for 180 mins (3 hours).