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8-Port Real-time Redundant Ring Switch


● Automatic MDI / MDI-X crossover for plug-and-play
● Each port supports both 10/100 Mbps speed auto negotiation
● Store-and-forward architecture
● Full duplex IEEE 802.3x and half duplex backpressure flow control 
● 3.2Gbps high performance memory bandwidth
● Frame buffer memory: 1 Mbit
● Integrated look-up engine with dedicated 2 K unicast MAC addresses
● Redundant Power Inputs +10 ~ +30V DC
Power failure alarm by relay output
● Supports operating temperatures from -30°C ~ +75°C
● DIN-Rail mount and screw hole for wall mounting kit



The RSM-408 is a 8-Port Industrial Ethernet (10/100Base-TX) Real-Time Redundant Ring Switch. RSM-408 supports 10/100M auto-negotiation feature and auto MDI /MDIX function. It can automatically switches the transmission speed (10 Mbps or 100 Mbps) for corresponding connections. The connectors of Ethernet port are shielded RJ-45. The shielded RJ-45 connectors offer a high reliability Ethernet environment for industrial control and automation.


RSM-408 built-in ICP DAS Cyber-Ring technique that enable multiple switches to be placed into a redundant ring. It detects and recovers from a fiber or copper link failure within approximately 300ms – for the majority of applications a seamless process. Modbus/TCP, Modbus/RTU and OPC supported, SCADA application can monitor status of Ethernet and fiber port with Modbus or OPC protocol.


RSM-408 provides two power inputs that can be connected simultaneously to live DC power sources. If one of the power inputs fails, the other live source acts as a backup to automatically support the RSM-408's power needs. And, the relay output facility can deliver warning signal while dual power or network link failure.


Artikelnummer RSM-408
Fabrikant ICPDAS
Completely compliant IEEE 802.3, IEEE 802.3u, IEEE802.3x
Ethernet switch type Intelligent store & forward
MAC addresses supported 2K
Memory Bandwidth 3.2 Gbps
RJ45 ports (shielded) 10/100BaseT(x)
RJ45 speed (auto-negotiating) 10 Mbps or 100 Mbps
RJ45 auto-mdi/mdi-x All 8 ports
Ethernet isolation 1500Vrms 1 minute
Required supply voltage +10 ~ +30 VDC
Power input isolation 1KV
Power consumption
(Redundant input terminals)
8 W
(typical - all ports active at 100 Mbps)
Case Metal
Flammability UL 94V-0
|Dimensions (w x h x d) 64 x 110 x 97.5mm
Installation DIN-Rail
Operating Temperature -30 ~ +75°C
Storage Temperature -40 ~ +85°C
Included Cable CA-090510


8-Port Real-time Redundant Ring Switch


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