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22/12/2025

S3 Series MDU/MBU Enclosures
Art.-Nr. 857-03147 | MDU-S3C-C03A2-14A | 

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Internal view of the MDU - S3 Enclosure.
MDU - S3 shown with lid and optional lock.
MDU - S3 (front view)
MDU - S3 (side view)
MDU - S3 (bottom view)
MDU - S3 (rear view)

    • Up to 32 connections
    • Maximum 96 Fibre Splices
    • Small Angled IR Fibre Management System (FMS)
    • 4 SE MKII trays with 3A Splice Bridges
    • Horizontal Splice Orientation for 4 FMS cable entry points
    • 1 entry port fitted with Loop Through Anchor Gland
    • 1 Multi Drop Seal
    • Optional MDU Accessories
    • IP54/IK08
    • UV Stable / UL-94 V0 Rating
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    Application The HellermannTyton S3 Multi-Dwelling Unit (MDU) Enclosure is designed for deploying within the last mile of an FTTX network.
    The S3 is available in numerous configurations of tray styles, connector counts, port types and optical functions depending on the particular
    requirements of the operator. The cornerstone of the enclosure is the modular fibre management system (FMS) which is present in many of HellermannTyton’s fibre optic solutions. Numerous styles of both splice tray and splice holder are available for point-to-point (P2P) configurations as well as many options for splitter-based splice trays for more typical passive optical network (PON) or point-to-multi-point (P2MP) requirements.

    Connectivity within the last-mile, be that with LC or SC style connectors is often the operator’s preferred presentation and makes day-one customer connection and day-two network trouble shooting and support more straightforward, especially where a PON solution requires bi-directional testing but needs to avoid testing the wrong way through the splitter. Connector counts from 8 to 64 are available with several styles of connector mounting options possible.
    Content MDU-S3C enclosure
    Centre Small Angled Fibre Management System (FMS)
    4 x SE MKII Splice Trays (3A)
    Metal Connector Plate
    8 x LC APC Quad Adaptors (32Way)
    1 x Loop Though Anchor Kit
    1 x S3 Multi Drop seal (24 ports x 5mm)
    PART DESCRIPTION MDU-S3C-C03A2-14A
    Product Family Fibre Optic External/Internal Enclosure
    Product Group S3 Series MDU/MBU Enclosures
    Qty Trays 4
    Splice Capacity 96
    Technical Description The MDU S3 enclosure is a modular solution that can be configured in a number of ways to suit the deployment of a specific indoor/outdoor project or installation.

    The 340 x 247 x 76mm (H x W x D) enclosure is manufactured in light grey (RAL 7035) ABS (Acrylonitrile Butadiene Styrene): the S3 is UV stable with an UL-94 V0, IP54 and IK08 rating.
    The MDU S3 cover can be customised with a moulded or labelled customer logo.

    Designed with the small angled HellermannTyton IR Fibre Management System (FMS), the S3 C (Connectorised) accommodates 4 SE IR MKII splice trays giving a maximum of 96 3A fibre splices and 3 PLC splitters with a metal connector plate loaded with 12 LC APC quad adaptors.

    A loop through anchor bracket is pre-fitted on the left port of the base. The dual outlet of the bracket allows for loop through applications. The black rubber seals cover a cable range of 3.0mm to 14.0mm.
    The position of the FMS in the centre allows for horizontal splices and two additional red retaining blocks for easier access of the fibre routing onto the trays.
    The 4 red retaining blocks guide the fibre elements onto the FMS and their foam pads can be cut through to accommodate a range of fibre counts.
    One multi-drop seal (24 x 5mm drops) is pre-fitted on the right port of the base.

    An extensive range of optional accessories is available upon request and include lock, multi-drop seals (24 x 5mm), M20 cable glands (up to 14mm), loop through anchor kit, drop cable anchor brackets, SC or coloured splice trays, splitter holders for trays, internal or external loop storage baskets, PLC bare end of connectorised splitters (1:32, 1:16, 1:8, 1:4), easy strip coloured pigtails, internal corridor cables (bare end or fanout).
    Type MDU-S3C-C03A2-14A
    Variant Indoor/Outdoor FTTx Enclosures
    Height (H) 340mm
    Width (W) 247mm
    IP-Rating IP54
    ROHS compliant Yes
    Specifications
    Country of Origin CN
    GTIN-13 / EAN 4031026792231
    ETIM 7.0 Key EC000000
    ETIM 8.0 Key EC001124
    ETIM 9.0 Key EC001124
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