UNE-EN 50411-3-1:2025

1.1 Product definition

This document contains the dimensional, optical, mechanical and environmental performance requirements of a fully installed optical fibre wall or pole mounted box for up to 288 fibre splices, in order for it to be categorized as a European standard product.

The typical configuration is splicing of incoming fibres to optional splitters, connecting on the other side to outgoing fibres.

A box is a protective housing containing a fibre management system with splice trays of various fibre separation levels. The box can contain one or more of the following:

storage and routing for fibre and cable;

uncut fibre cable storage;

splice trays;

passive optical devices (optical splitters or WDM).

A box can be installed on a vertical indoor or outdoor surface above ground level. If the box is required to be relocatable with cables attached, the following additional tests are expected to be performed:

cable bending;

cable torsion.

This document specifies the number of splice trays and splice capacity for each fibre separation level. The maximum capacity is 288 splices. For housings with a higher number of splices, EN 50411-4-1 (street cabinets) can be used.

Boxes for fibre splice and patchcord connections are covered in EN 50411-3-4.