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Industrial Ethernet Switch USR-SDR021


SKU: Industrial Ethernet Switch USR-SDR021 Categories: ,


Industrial Ethernet Switch USR-SDR021 Introduction

Industrial Ethernet Switch USR-SDR021 is a Industrial Ethernet-unmanaged electric and fiber network switches with 2 electric port and 1 fiber port. Plug and play, simple and reliable, quickly realize the expansion function of the network port, and enhance the reliability and security of the industrial network.

Features of USR-SDR021

  • Support 2 Ethernet ports (electrical ports) and 1 fiber port, 10/100Mbps rate adaptation.
  • Support level 4 electrostatic protection, level 4 power surge protection, level 3 network port surge protection, IP40 and other advanced protection.
  • Phoenix terminal power interface.
  • Support 10-58V wide voltage, natural heat dissipation, DIN-Rail mounting.

Function of Industrial Ethernet Switch

  • Wide Power Supply.
  • Natural heat dissipation.
  • DIN-Rail Mounting.
Shell IP40
Power Surge Protection IEC 61000-4-5 Level 3(4KV/2KV)(8/20us)
Ethernet Port Surge Protection IEC 61000-4-5 Level 3(4KV/2KV)(10/700us)
EMI Class A
Anti-Static IEC 61000-4-2 Level 4 (8K/15K)


  • Intelligent transportation network transmission
    • In the case of intelligent traffic scene, high-definition camera increases the data volume and increases the pressure of network bandwidth.USR-SDR021 unmanaged industrial ethernet switch supports 100-megabyte rate to handle heavy traffic through smoothing. It reduce the construction cost.


Model USR-SDR021
Interface Power interface Phoenix terminal, redundant dual power supply
Network interface 10/100 Base – T
Ethernet port number 2*10/100M,1*100 Base-FX
LED indicators PWR,Link/ACT
Cable type Twisted-pair 100m(CAT5E, CAT6)
Monomode optical fiber 20/40/60/80/100KM
Multimode (optical) fiber 550m
Electrical specifications Input voltage DC 10-58V
Power consumption Normal model<5W; POE model<65W
Network Topology Star topology support
Bus topology support
Tree Topology support
Parameters MAC address table 1K
Buffer 512K
Forwarding delay <3us
MDX/MIDX support
Flow control support
Jumbo frame 2048 bytes
Switching capacity 1G
Packet forwarding rate 0.744Mpps
EMC&Ingress protection IP level IP40
Power surge protection IEC 61000-4-5  Level 3(4KV/2KV)(8/20us)
Ethernet port surge protection IEC 61000-4-5  Level 3(4KV/2KV)(10/700us)
ESD IEC 61000-4-2  Level 4(8K/15K)
Free fall 0.5m
Environment Operating temperature -40℃~+85℃
Storage temperature -40℃~+85℃
Relative humidity 5%~95%,(non-condensing)
MTBF MTBF 100000 hours
Mechanical structure Size 143X104X48mm
Installation method DIN rail
Shell material Aluminium alloy
Weight 0.52kg