Dual Ethernet Master Selector for two redundant EtherCAT®, Sercos III, PROFINET®, ... -Masters

Designed to build redundant Ethernet based Master Systems like EtherCAT, Sercos III, PROFINET, ...

  • A network (EtherCAT, Sercos III, PROFINET, ...) with cable redundancy is switched via a simple control signal to the primary master or the secondary master
  • Ideal to establish redundancy on the master side as an extension to the EtherCAT Technology Group Standard (ETG) or Sercos III standard

Compatible with Ethernet-based Systems

  • Flexible application when switching a network between two masters / PCs due to compatibility to all Ethernet based systems or fieldbus standards like EtherCAT, Sercos III, PROFINET, etc. with 100BASE-TX

Optically isolated Switching Signal

  • The switching signal is galvanically isolated
  • Characteristic according to DIN EN 61131-2, Type 3
  • DIN-EN rail mounting
  • Ethernet physics according to IEEE 802.3

The product is also listed on the product pages of the following user organizations:


The ECX-Master-Selector features a LAN selector switch. Controlled by a simple input switching signal, the ECX-Master-Selector can connect an EtherCAT network to one of two EtherCAT masters with cable redundancy and switch easily. The control signal is galvanically isolated.


The ECX-Master-Selector is designed for DIN-EN mounting rail installation. The module thus enables user-friendly connection of the supply voltage.
The supply voltage can be connected via the InRailBus connector (TBUS-Connector), integrated in the mounting rail, or separately via the power connector with clamp connection.

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We are happy to provide you with a customer-specific option or adjustment to our products when purchasing appropiate quantities. Please contact our sales team for detailed information.

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Telephone: +49 (0) 511 37298-0

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Number: E.3021.01

Dual EtherCAT Redundant Master Selector, IEEE 802.3, 24VDC, rail mounting

  • galvanically isolated
  • Ethernet
Form factor: Railmount  
  • Digital Input
  • EtherCAT
  • Ethernet
  • Ethernet/IP
HS Code: 85176200