Fire retardant junction box Multifix KR00

Multifix KR00 fire retardant junction box HF with an adjustable spacer ring 12–27 mm without nipples.

Multifix KR fire retardant junction boxes maintain the wall’s fire rating. The boxes have fireproof seals that expand and protect against fire if the temperature rises beyond 120 degrees. In the event of fire, the hole on the wall is sealed completely, preventing fire and flue gases from spreading around the building through apparatus boxes. KR fire retardant junction boxes have been approved for walls rated EI30, EI60 or EI90. Normal KR nipples are used with fire retardant junction boxes.

Explore the new Schneider Electric Multifix KR apparatus box collection. KR apparatus boxes and accessories have been developed based on the familiar JR series. The KR series features the best – and improved – properties of the previous product family.

KR apparatus boxes have brand new, innovative functions. Special attention has been paid to easy and quick installation.

Multifix KR apparatus boxes have been designed to meet the needs of electricians.

• Creating through holes is now significantly easier than before. Use a hammer or some other tool to make a neat through hole with little effort.


• Attaching and detaching nipples is easier than before.


• The adjusting ring has also been improved. The screw ring rises smoothly 2 mm per turn. The adjusting ring screws have been made shorter to ensure that the screws do not get tangled in the cables.


• Integrated connection of apparatus boxes has been developed since the Multifix Ultra series. Combining two or more apparatus boxes is now more convenient.


• The apparatus box cover has additional purposes to protecting the inside of the box. The cover has a handle which makes turning the adjusting ring by hand easy. You can also use a screwdriver to turn the adjusting ring.