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Metal industrial switch with five Ethernet ports and one SFP slot

Lantronix

Lantronix SISTP1040-551-LRT 5-port hardened PoE++ network switch

SKU CH-W9VF-A53BJ MPN SISTP1040-551-LRT

Hardened five-port Gigabit switch delivers up to 90 W PoE++ per port with redundant power for -40 to +75 °C operation

  • Network Management TypeUnmanaged
  • Hardened design withstands -40°C to +75°C operating temperatures
  • Four PoE++ ports deliver up to 90 W each simultaneously
  • Dual-speed SFP slot enables 100/1000Base-X fibre uplinks
  • Redundant power inputs maintain operation if one feed fails
  • Complies with IEEE 802.3bt, 802.3at and 802.3af PoE standards

Hardened PoE++ switch for outdoor networks

The Lantronix SISTP1040-551-LRT is an unmanaged five-port Gigabit Ethernet switch built for harsh environments. Four ports deliver up to 90 W each under IEEE 802.3bt, with a fifth copper port plus a dual-speed SFP slot for fibre uplinks. Redundant power inputs and a -40 °C to +75 °C operating range keep cameras, lighting and signage running in extreme conditions.

Installers needing high power in tough climates

This unit suits integrators deploying PoE lighting, high-power IP cameras or digital signage where temperatures swing wide and uptime matters. The DIP-switch PoH mode adds 95 W capability for HDBaseT devices. It is not for offices needing managed features such as VLANs, QoS or remote monitoring, nor for sites that require fanless silence in climate-controlled racks.

90 W per port under IEEE 802.3bt

Each of the four PoE++ ports can supply 90 W simultaneously, making the per-port power budget the deciding spec. If connected devices draw less, a standard 802.3at switch may suffice; if they need more, this model cannot exceed the 90 W limit.

Highlights

  • Hardened design withstands -40°C to +75°C operating temperatures
  • Four PoE++ ports deliver up to 90 W each simultaneously
  • Dual-speed SFP slot enables 100/1000Base-X fibre uplinks
  • Redundant power inputs maintain operation if one feed fails
  • Complies with IEEE 802.3bt, 802.3at and 802.3af PoE standards

Specifications

BrandLantronix
ModelSISTP1040-551-LRT
Part NumberSISTP1040-551-LRT
Network Management TypeUnmanaged
Shipping weight1.13 kg
Package size180 × 163 × 91 mm

Questions about this item

What mounting hardware is required for the SISTP1040-551-LRT in an industrial cabinet?

The unit is a hardened switch designed for industrial environments; it operates from -40°C to +75°C and uses redundant input power connections, so it typically mounts on a DIN rail or panel with standard industrial brackets.

How do I enable the 95 W PoH mode on the four PoE++ ports, and what step is often missed?

Set the DIP switch to PoH mode; the step often missed is confirming that the redundant power inputs are both live so the switch can deliver 95 W per port without shutting down.

Which replaceable component should I plan for after several years in a -40°C to +75°C installation?

The dual-speed SFP transceiver in the 100/1000Base-X slot is the only field-replaceable optical module; keep a spare 100/1000Base-X SFP on hand for link restoration.

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