Industrial Ethernet switch, ESULS4-M1-B

Industrial Ethernet switch, unmanaged, (4) 10/100Mbps IEEE802.3af/at PoE/PoE+ copper ports, (1) 100Mbps SFP port, IP40 industrial level 3 ESD protection. DIN rail mount. Input 48-57VDC. Requires power supply sold separately.


The KBC ESULS4-M1-B Series is a high performance, unmanaged industrial switch with 4*10/100M auto sensing copper port, and 1*100M SFP port. Four copper ports support PoE/PoE+ which means each port offers a maximum of 30w power. The SFP port can connect to our full SFP switch ESBUMN8-P2 (8*100M SFP+ 2Gigabit SFP), or modular switch ESBM28M00 to achieve full fiber communication from site to center. The switch is rugged in design with IP40 and industrial level 3 ESD protection. Unique mount design makes DIN mounting and removal simple. The switch is rugged in design and suitable for use in harsh environment applications, such as Power, Transportation, Pipeline, Petrochemicals, Automation Industries and IP surveillance.


  • 4×10/100M Base-T(X) ports
  • 1×100M SFP ports
  • Unmanaged industrial switch
  • Supporting IEEE802.3af&at
  • Redundant power supply input
  • Overload current protection and reverse polarity protection
  • Level 3 ESD protection
  • IP40 housing design
  • Supporting DIN rail or wall-mounted
  • Unique DIN mount design makes mounting and removal simple
  • Both PoE and Non-PoE models are available



    • IEEE Standards:
      • IEEE802.3
      • IEEE802.3u

Switch Performance

    • Architecture: Store-and-forward
    • Buffer: 512K
    • Switch Capacity: 1Gbps


    • Standard: 802.3af/at
    • PSE Type: End-span
    • Power Pin Assignment: 1/2(+), 3/6(-)
    • PoE Power Output: up to 30 watts max per port


    • 10/100MBase-T: 4, PoE/PoE+
    • 100MBase-X SFP (1): 1


    • Enclosure: IP40
    • ESD: Industrial level 3


    • Power Input: 48 ~ 57Vdc
    • Power Consumption: < 8W (no PoE output)
    • PoE Budget: 120W
    • Overload Current Protection: Yes
    • Reverse Polarity Protection: Yes


    • Operating Temperature: -40° ~ +75°C
    • Storage Temperature: -40° ~ +85°C
    • Operating Humidity: 5% to 95% non-condensing


    • Dimensions (L x W x H): 62mm × 86.5mm × 100mm
    • Weight: 0.6kg


Datasheet of ESUMN8-P2-B


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