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Souriau has introduced what it claims are the first Quadrax-contact connectors on the market intended for railway applications.

The company offers seven dedicated ranges and around 100 different layouts intended for onboard or track-side applications.

The Ethernet Quadrax solution can be installed on new or upgraded stock.

It is used with copper cable, transmitting data according to MVB, WTB and Ethernet protocols at speeds up to 1GB/sec.

Connectors with railway Quadrax contacts have been adapted to railway cables, which have specific cross-sections and diameters.

The Souriau railway range has five connectors with Quadrax: one layout with one Quadrax for the VGE1 series; one layout with pne Quadrax for the FER1 series; and three layouts for the 838 series – two Quadrax, four Quadrax and four Quadrax plus eight signal contacts.

These connectors have been installed on new Alstom stock and in SNCF upgrade programmes.

Alstom has selected Souriau to supply all the intercarriage signal connectors for the MI09 programme.

The 60 train sets will run on Paris suburban tracks (RER A), replacing the current stock.

The SNCF has also awarded a contract to Souriau for the supply of 838 series connectors and harnesses, with four Quadrax and eight signal contacts for the Z2N upgrade programme.

The Quadrax connectors are installed between carriages to equip the carriages with passenger information screens at the front and rear of the train.

VGE1 and FER1 connectors with a single Quadrax contact are already installed on the MP05 Paris metro trains.

The VGE1, FER 1 and 838 Series Quadrax connectors have been qualified according to the NF F 61-030 standard.

The composite materials used have a requirement II fire-smoke class according to standards NF F 16-101 and 16-102, and the Quadrax contacts have been placed in category 6 according to the Ethernet standard IEC 11801.

The most significant example, according to the company, is the use of a single AWG 16-size contact, which is derived from the Trim Trio industrial range, for all railway ranges.

A platform of seven dedicated ranges with around 100 layouts is available, to provide flexibility and versatility for embedded equipment, signalling and infrastructure applications.

The customer manages a single contact listing, reducing management costs.

A single type of crimping tool is required for all connectors, enabling the wiring process to be standardised.

The connectors, made of composite materials, are installed on train sets and contribute to weight savings, reducing train energy consumption.

In high-speed transmission, Souriau is working on connector solutions with optical fibres, which will eliminate heavy copper cables for certain applications.

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