The RS20-0400M2M2SDAE switch is a fast Ethernet switch of the managed type and that has 4 available ports. The unit is part of the OpenRail series and it comes in a compact housing with an IP 20 rating. The available ports are one 100BASE-FX/MM-SC (1. uplink) port, one 100BASE-FX/MM-SC (2. uplink) port, and 2 standard 10/100 BASE TX/RJ45 ports. This Ethernet switch by Hirschmann provides a plug-in terminal block with 6 pins, an RJ11 socket, and a USB to connect the AutoConfiguration adapter known as the ACA21-USB.  

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Warranty: 1 year Networking-Hardware Warranty Included
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Repairs: We offer repair service for the RS20-0400M2M2SDAE.
Exchange: Exchange credit for your defective unit available.

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About RS20-0400M2M2SDAE

The catalog number RS20-0400M2M2SDAE is used for a Fast Ethernet switch that has been designed and manufactured by Hirschmann. This managed switch supports Layer 2 Enhanced software, DIN Rail mounting, and the store-and-forward switching modes. Additionally, the unit has a fan-less design and an IP 20 protection rating. The RS20-0400M2M2SDAE managed switch comes with a power supply/signaling contact with a plug-in terminal block with 6 pins, a V.24 interface with an RJ11 socket, and a USB interface for connection to the AutoConfiguration adapter known as the AC121-USB adapter. The network size of the RS20-0400M2M2SDAE managed switch supports multi-mode fiber cables in a length of 0 to 5000 meters or 0 to 4000 meters. The supported Ethernet network can be in any line or star topology and it has a maximum ring structure quantity of 50 switches. The reconfiguration time for the network ring structure is less than 0.3 seconds.


The Hirschmann RS20-0400M2M2SDAE Fast Ethernet managed switch has an operating voltage rating of 12, 24, or 48 Volts DC and 24 Volts AC. In addition to that, the current consumption rating at 24 Volts DC is 321 milliamps and the power consumption rating at 48 Volts DC is 161 milliamps. The RS20-0400M2M2SDAE managed switch provides a power output rating of 26.3 BTU per hour. The switch offers various software solutions for management, diagnostics, security, configuration, filter, redundancy functions, time synchronization, and flow control. The operating temperature range of the unit is from 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) while the unit has a specified transport or storage temperature of -40 to 70 degrees Celsius (-40 to 158 degrees Fahrenheit). The permitted relative humidity range is 10 to 95% (non-condensing). The scope of the switch delivery includes the device, a terminal block, and an operating manual.


Technical specifications


Managed Switches



1x 100BASE-FX/MM-SC (1. uplink), 1x 100BASE-FX/MM-SC (2. uplink), 2 x standard 10/100 BASE TX/RJ45

0 to 5000 meters or 0 to 4000 meters

12/24/48 Volts DC and 24 Volts AC

321 milliamps

161 milliamps

26.3 BTU per Hour

IP 20

400 grams (0.8 pound)

47 x 131 x 111 millimeters (1.8 x 5.1 x 4.3 inches)

0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit)

-40 to 70 degrees Celsius (-40 to 158 degrees Fahrenheit)


Common misspellings:

Common misspellings: