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КРО-8-2 Support Distribution Box


КРО-8-2 Outdoor support distribution box is designed for FTTN network and is suitable for usage in cottage private sector for overhead aerial communication lines.


КРО-8-2 is designed for connection up to 8 users with possibility to assemble up to 2 PLC splitters with 1/4 division or 1 1/8 splitter and is designed for support installation. In this case main cable can be laid with aerial approach (КС-ОКТ, КС-ОКТо-А/П cables), or by underground approach (КС-ОКЛ cable). In some projects this box can be mounted on the wall. It is recommended to connect users by means of FTTH small-sized cables: КС-FTTHSC cable with strength member for support mounting and КС-FTTH cable for wall mounting.

Technical specifications

Box overall dimensions (HхWхD) – 260х260х90 mm (260x300x90mm with cable outputs and grounding bolt)

Bracket dimensions for cable winding (HхWхD) - 461x300x87mm

Maximum SC/APC port number – 12(10 for users’ connection, 2 for input splitters connection)

Protection sleeve set number – 36 (18 in each two rows)

Maximum splitter number – 1 – 1/8 or 2 – 1/4

Total weight, kg – 9.8kg (including 5.15kg box weight and 4.65kg bracket weight)

Cable input number – 10 ( one oval input for 2 main line cables or 1 transit, 2 PG inputs for 4 users ‘cables each)

Metal thickness – 1,5mm

Paint – polymeric coating, RAL 7035, shagreen, rough structure, glossy

IP-55 protection class according to State Standard 14254-96

Operating temperature: from -450С to +450С

U category climate design 1 location according to State Standard 15150-69



Constructively the product consists of a КРО-8-2 box and a bracket for main line cable storage. KPO-8-2 distribution box for support mounting is a metal welded box with 1,5mm metal thickness. There is a lock on the box door and a doorstop with 115° opening angle.

КРО-8-2 Box is designed for mounting on round or multisided supports with diameter about 200-260mm. That is why the box is completed with 2 clamps which are adjusted according to required length. There is a rotary panel, which is a universal two-sided cassette, in the center of the box. There are locating blocks for protections sleeves and organizers for spare fibers and pigtails storage on the interior side. On the front side there is a slat for up to 12 SC simplex connectors installation and an organizer for optic splitters assembling and for excess splitters output/input storage. On the back wall of the box there are 2 reels for optical module storage and rings for users’ optical network laying out.

At the right bottom part there are 2 inputs for users’ optical cable. Each user’s input is provided with rubber gland, specified for 4 user’s cable input (from 2 to 4, 5 mm cable diameter). At the left bottom part of the box there is a cable input for the main line cable with diameter from 9 to 12 mm.

Main line optical cable transit is possible without transit modules cutting and welding.

Note: It is necessary to connect user’s cable without fiber welding on pigtails! It is recommended to use pre-terminated cable technology, connectors welding without pigtails or fast connector termination.

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