Unmanaged Hardened Gigabit Ethernet PoE+ Switch with Low Voltage Input
(8)10/100/1000Base-T Ports + (2) 100/1000Base-X SFP Slots

  • SISTP1040-382B-LRT
  • SISTP1040-382B-LRT-Front
  • SISTP1040-382B-LRT-Back

This switch is an unmanaged full Gigabit Ethernet hardened PoE+ switch that complies with IEEE 802.3at and IEEE 802.3af. The switch has (8) 10/100/1000Base-T PoE+ ports with (2) 100/1000 dual speed SFP slots. In many fields such as Vehicle, Factory or Solar systems, there are no standard power input requirements of 52 to 57 volts for PoE devices. The SISTP1040-382B-LRT uses booster technology to allow the user to deploy the PoE switches in the power input range of 12 to 24 volts. It can still deliver up to 30 Watts on each PoE+ port. The two fiber uplink ports can also be used in a daisy chain for maximum network reliability. It has redundant input power connections to ensure safe reliable operation in temperatures between -40°C and +70°C. Transition Networks’ hardened switches are certified to operate reliably in harsh environments such as those found on factory floors, outdoor enclosures or other hazardous environments.


SISTP1040-382B-LRT Overview


  • Support Jumbo Frame up to 9K bytes
  • Layer 2 wire-speed switching engine
  • Ruggedized metal closure
  • IEEE 802.3az Energy Efficient Ethernet
  • Fan-less design
  • Wide operating temperature range (-40°C to +70°C)
  • Dual Power input
  • Din Rail and Wall Mount options

PoE Features

  • IEEE 802.3at compliant
  • IEEE 802.3af compliant

SISTP1040-382B-LRT Tech Specs


    • IEEE 802.3
    • IEEE 802.3u
    • IEEE 802.3z
    • IEEE 802.3ae
    • IEEE 802.3x
    • IEEE 802.1p
    • IEEE 802.3az
    • IEEE 802.3af
    • IEEE 802.3at


    • CSMA/CD


    • Store-and-forward switching architecture


    • (8) 10/100/1000Base-T RJ-45 ports
    • (2) 100/1000Base-X SFP slots

    MAC Address

    • 4K MAC address table

    Status LEDs

    • System, Power1, Power2, Port Status


    • Width: 1.7” [44 mm]
    • Depth: 5.1″ [130 mm]
    • Height: 5.3” [135 mm]

    Reset button

    • Reset the switch

    Power Input

    • 12 – 24 VDC; Redundant input; reverse power protection


    • 24VDC Input:
      • Total PoE Budget: 120 Watts
      • 30 Watts output on 4 ports
      • 15 Watts output on all 8 ports
    • 12VDC Input:
      • Total PoE Budget: 60 Watts
      • 30 Watts output on 2 ports
      • 15 Watts output on 4 ports

    Ingress Protection

    • IP30


    • Operating: -40°C to +70°C
    • Humidity: 5% to 95% (non-condensing)


    • 1.01 lbs. [0.46 kg]


    • UL Listed; EMI: CE, FCC Part 15;
    • Safety: EN60950


    (Designed to Meet) *Please contact sales with certification needs

    • Class 1 Div 2


    • 5 Years

SISTP1040-382B-LRT Resources

Application Spotlights
Press Releases
Case Studies

SISTP1040-382B-LRT Downloads

Note: Some Documentation may have Transition Networks named or pictured. Transition Networks was acquired by Lantronix in August 2021. Learn more about the acquisition here.

SISTP1040-382B-LRT Part Numbers

SISTP1040-382B-LRT SISTP1040-382B-LRT

(8) 10/100/1000Base-T PoE+ [100 m/328 ft.] ports + (2) 100/1000Base-X SFP slots (Din Rail Bracket included)

Lantronix Part # Name Description Order Now

Compatible Accessories

Lantronix Part # Legacy Part # Name Description Order Now
SFP Modules SFP Modules See Relevant SFP Modules
OCA-P181610 OCA-P181610 Outdoor Cabinet Assembly 18 x 16 x 10” Polycarbonate Enclosure for Outdoor Switches
DRBH-01 DRBH-01 Din Rail Bracket for Hardened Switches
WMBH-01 WMBH-01 Wall Mount Bracket for SISPM1040-384-LRT-C, SISPM1040-362-LRT, SISPM1040-582-LRT
25175 25175 Industrial DIN Rail Mounted Power Supply