FireBox - Connections and Junctions in the Maintenance of Electrical Function
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FireBox Versatile solutions for fire-tested connections

Maintenance of the electrical supply for safety-relevant electrical systems The maintenance of electrical function is required in any structure in which large numbers of people congregate, for example, hospitals, hotels, underground railway systems or tunnels. Maintenance of the electrical function exists when the current flow is not interrupted during a fire. This allows, for example, emergency lighting, ventilation and fire alarm systems to continue working and emergency and escape routes to remain usable. The longer these technical systems work, the greater the chances of rescue. A key...

The fire test Without compromises There can be no compromises in fire protection. In an emergency, every product used must function absolutely reliably and also comply with legal and construction regulations. As an OBO customer, you can rely on tested quality. Our fire protection experts subject every newly developed product to comprehensive tests in accredited testing institutes. In doing so, we orientate ourselves to national and international testing standards. Fire room temperature Independent testers inspect the results and assign the appropriate proofs of suitability, such as...

FireBox application Extending safety cables and branching them reaction-free If fire alarm systems are installed in the building, it is possible to waive cabling that maintains the electrical function to class E30 in certain areas. These include, for example, branch cables to fire alarms located in a fire section. Here, routing of E30 cables to the first fire alarm is sufficient. If the fire alarm system was created with loop technology, then no E30 safety cables are required at all. If cables fail during a fire, the system detects interruptions and automatically switches the signal paths....

Main safety power distributor Fire section n (end of fire section) Junction box with maintenance of function to E30 (incl. fuse) Safety lamp with escape route pictogram Safety lamp Standard cable Cable with maintenance of function to E30

Clear portfolio, wide range of uses Six variants for all applications The FireBox is available in a number of variants, which can reliably cover any area of use and all applications. The distribution over only six product groups means that it still remains clear. All the junction boxes have practical external fastening. The junction boxes are available in pre-terminated form with soft plug-in seals, allowing simple, quick mounting that meets the conditions of the approval. Further processing of the junction box is not required. These FireBox variants are available in three sizes. In...

The FireBox stands out through the halogen-free material, meaning that in the event of fire, no toxic gases are created, thus reducing injury to people and keeping damage to property to a minimum. All the junction boxes have the protection rating IP66. Closed FireBox, empty with support rail and external fastening made of stainless steel, for free termination FireBox with 1 fuse holder to protect a branch, with single and double terminals FireBox with 2 fuse holders to protect two branches, with single and double terminals Accessories V-TEC cable gland, plug-in seals, single and double...

Connection technology The ceramic connection terminals as the core of the FireBox The heart of the OBO FireBox is the ceramic connection terminal. It is available as a single and double terminal. The housing of the terminal block is made of high-temperature-resistant ceramic materials and is the basis for a secure mechanical and electrical connection. In combination with the thermoplastic housing, the ceramic connection terminal forms a system with fire protection testing. The different junction box sizes are adapted to the appropriate nominal cross-sections of the terminals: The FireBox...

Volume of the ceramic terminals per connection Nominal cross-section of wires Nominal cross-sections of the terminals • Versions as single and double terminal • Branching of different cable cross-sections with the double terminals • Protection of the branch possible using separate fuse holder • Protective conductor terminal directly on support rail – no covering of the metal parts required * -2 = 2x n When using the double te

Minimum mounting work for maximum safety and security Accessories and mounting options Mounting plates Two universal, specially angled, beading-stiffened mounting plates are available for fastening the FireBoxes to cable support systems: Type F for mounting on the front side of the cable support system and type B for mounting on the rear side. In both cases, the opening of the junction box is always accessible and the cables do not need to be run over the edge of the cable support system. The mounting plates are suitable for cable trays and ladders, as well as mesh cable trays.

Bolt ties The supplied bolt ties are approved for fastening the junction boxes to concrete and various types of masonry, allowing mounting on walls and ceilings in line with the approval. Plug-in seals Just as simple as the mounting of the FireBox is the cable entry: The cables are inserted or run out through the pre-mounted elastic plug-in seals. The soft seals adjust themselves to the cable in a flexible manner and make it dust-proof and waterproof. V-TEC cable gland In combination with the closed FireBox, cables can also be installed with a robust cable gland. They can be positioned...

OBO Support: Help from the fire protection experts A first consultation, a concrete question or a comprehensive problem: Via OBO's Customer Service, you can reach a direct contact who can help you with any matter connected with fire protection. Our technically qualified Customer Service is in constant contact with our product managers and developers and can offer rapid help with practical solutions. In the case of more comprehensive enquiries or tricky challenges, you will be forwarded to the appropriate fire protection expert. Or we can organise a member of our field service to develop...