Bridging the gap

Our RUGGEDCOM family of RMC media converters are designed to bridge the gap between different types of network segments, speeds and protocols. This reduces installation and configuration costs.  

Find the right product for your needs



Rugged communications for harsh environments

Designed for and put to the test under the harshest environments, RUGGEDCOM products meet and exceed recognized industry standards for performance in mission-critical applications.

Reduce installation and configuration costs

Tiny but mighty, this family of RUGGEDCOM media converters bridge the gap between different types of network segments, protocols and speeds.


A utility-grade fiber optic media converter, the RUGGEDCOM RMC is designed specifically to operate in harsh environments such as those found in electric utility substations and factory floors. The RUGGEDCOM RMC provides industrial strength Ethernet copper-to-fiber media conversion allowing for 10BaseT-to-10BaseFL and 100BaseTX-to-100BaseFX over single-mode or multi-mode fiber optics.


The RUGGEDCOM RMC20 is a utility-grade, protocol-independent, serial-to-fiber, and serial standards converter for all your serial communication requirements. Among its numerous functions, the RMC20 allows RS485, RS422, or RS232 devices or networks to communicate over secure, noise immune, optically isolated, fiber optic cabling at extended distances as well as convert RS232 to either RS485 or RS422 serial standards.


The RMC20 is also specifically designed to provide years of maintenance-free operation for all your mission-critical, real-time control applications.


A utility-grade, 2-port Serial-to-Ethernet server, the RUGGEDCOM RMC30 is specifically designed to operate in harsh industrial environments.


Take advantage of both an RS232 port and an RS485/422 port simultaneously via a solid screw down terminal block. The 10Base-T Ethernet port supports both auto-negotiation and auto crossover detection and simplifies cabling. Setup is a breeze due to the simple, intuitive network-based configuration using either the built-in web or Telnet server.


The RUGGEDCOM RMC40 is a 4-port unmanaged Ethernet switch that provides both copper-to-fiber media conversion as well as 10Mbps to 100Mbps speed conversion. Not only does the RMC40 come with an option to use in place of traditional copper-to-fiber media converters, it also has the added ability to convert speed from 10Mbps to 100Mbps. With dual fiber optics, daisy chaining of Ethernet enabled devices can easily be accomplished. For the most demanding of systems, a dual-redundant fiber optic connection can be created for a device that only offers a single 10/100TX port.


The RUGGEDCOM RMC41 is a 2-port unmanaged Ethernet switch that provides both copper-to-fiber media conversion as well as 10Mbps to 100Mbps speed conversion. The versatility and wide selection of fiber optics allows the RMC41 to be used in a variety of applications. It can be used in place of traditional copper-to-fiber media converters along with the added ability to convert speed from 10Mbps to 100Mbps.

Products at a glance

Ethernet media converter (copper-to-fiber)
Serial media converter (copper-to-fiber)
2-port serial device server
4-port Ethernet media and speed converter
2-port Ethernet media and speed converter
Media Conversion
10BASE-T to 10BASE-FL or 100BASE-TX to 100BASE-FX
RS485/RS422/RS232 conversion to multimode fiber and back
RS232/RS422/485 serial to IP conversion
Provides media and speed conversion.
10/100BASE-TX to 100BASE-FX or 10/100BASE-TX
10/100BASE-TX to 100BASE-FX converter
Operating Temperature Range
  -40°C to +85°C
  -40°C to +85°C
  -40°C to +85°C
  -40°C to +85°C
  -40°C to +85°C
Power Supply
24 VDC, 48 VDC or HI
24 VDC, 48 VDC or HI
24 VDC, 48 VDC or HI
24 VDC, 48 VDC or HI
24 VDC, 48 VDC or HI
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Technology that meets industry requirements

True to their name, RUGGEDCOM solutions are built tough – delivering error-free communications under high levels of electromagnetic interference in extreme temperatures and over long distances. See how RUGGEDCOM solutions have been put to the test. Discover special features, examples of international standards compliance, and more.

Further information

The knowledge and support you need, when you need it

Get a detailed overview of all Siemens has to offer – from RUGGEDCOM product information to support and services.
Professional Services for Industrial Networks

Professional services for industrial networks

It’s easy to acquire a top-of-the-line industrial communication network when you’re backed by our first-class network components and strong network design expertise. Work directly with us and our certified Solution Partners to help develop a network solution tailored to your needs. 

Industrial networks education

Industrial networks education

Need in-house specialists? Participate in Siemens industrial networks training program and earn the subsequent certification aligned with international Industrial Ethernet standards. 

Warranty information

Gain an overview of the general terms and conditions of sale for RUGGEDCOM products. 


Proven technology

Day in and day out, RUGGEDCOM products perform without fail under extreme conditions around the world. Read on to find out more.
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Rugged communications equipment for harsh environments

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