SwitchBlox Rugged -40°C to +105°C Ethernet Switch


The Small, Robust Ethernet Switch

  • Tiny, rugged ethernet switch for the harshest applications.
  • Operating temperature = -40°C to +105°C
  • Storage temperature range = -55°C to +125°C
  • Conformal coating
  • Wide, reverse and transient protected input voltage range from 5.1 to 65V.
  • Power (idle) = 600mW, Power (all ports 100M speed) = 1200mW
  • Made in the USA, parts sourced only from USA manufacturers
  • STACKABLE! Two boards can stack to create a 10 port switch
  • 5 port ethernet network switch works out the box.
  • 10/100MB Speed.
  • Auto MDI-X crossover.
  • All picoblade to RJ45 cables included.
  • 15W PoE injector onboard selectable per port (IEEE 802.3af).
  • Directly footprint compatible with SwitchBlox
  • Volume discounts available, please get in touch
  • STEP file here
  • SwitchBlox Rugged DataSheet

Available on back-order

SKU: BB-SWR-A-1-1 Categories: ,


The Small, Ruggedized Ethernet Switch

SwitchBlox Rugged is an ultra-tough, 5 port, 10/100M ethernet switch designed for the world’s toughest environments.  Let your drone go where no drone has gone before!

Unprecedented -40°C to +105°C Operation Range

Every single part on the BoM for SwitchBlox Rugged is rated for operation from -40°C to + 105°C (or more). We use military-grade passives, and the switch IC is automotive rated for use in the -40°C to + 105°C range. This makes SwitchBlox Rugged the most temperature tolerant commercially available switch, easily beating the competition’s rating (which tops out at 85°C). If you’re looking for the best reliability in networking for a harsh application, SwitchBlox Rugged is for you.

Extra Wide 5-65V Voltage Operation

Along with the wide temperature range, SwitchBlox Rugged can operate off any voltage from 5V to 60V (tolerant to 65V), with reverse and transient over-voltage protection onboard. You’ll have to work hard to kill this board.

Market-Leading Size and Cost

SwitchBlox Rugged retains the same footprint as SwitchBlox, making it far smaller than anything else on the market while retaining a price-point that makes it attractive enough for integration into your robot, drone, or other industrial equipment.

Designed in the UK, Manufactured in the USA

Every part on the BoM of SwitchBlox Rugged is sourced from USA distributors; from the Microchip ethernet switch chip down to the smallest capacitor. (Need to inspect our BoM? We’ll need an NDA, please get in touch). The boards are designed in London and manufactured in Houston, Texas.

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Stackable Board


  • SwitchBlox Rugged exposes RGMII on a stackable header, allowing two SwitchBlox Rugged to be stacked together to create a 10 port switch (unmanaged and managed).
  • The stackable header also allows integration into any other board over RGMII. This can be used for network extension or in-band switch management (Developing an application? We can help, get in touch.)
  • To stack two boards, you will need a pin header (MPN: M22-2520705), 8mm hex standoffs (MPN: 24382), and M2.5 machines screws (MPN: 29300).

A Whole Range of Other Features

  • All boards are conformally coated to provide protection against ingress, even without integration into a chassis.
  • SwitchBlox Rugged can supply downstream ports with power (PoE IEEE 802.3af) up to 15W (selectable per port).
  • Port activity indicator signals can be brought off-board via an onboard connector.
  • An STM32 is embedded onboard, allowing all the managed switch features of the KSZ8567S to be enabled (requires onboard firmware).


Plug and play network switch

As an unmanaged network switch, it works straight out the box, all you need to do is…

  1. Apply a 5 to 65V DC supply.
  2. Connect your devices using the included cable set.
  3. It will automatically begin forwarding packets, no coding or setup needed.


We’ve squeezed all necessary Ethernet circuitry into SwitchBlox without making performance compromises. We use magnetics for improved signal integrity and electrical isolation between each ethernet bus.


We use Molex Picoblade connectors on all our boards to keep them tiny, and we include all the cables needed to get started, which are…

5 x SwitchBlox RJ-45 Network Cables (Molex male to RJ-45)

Use this cable to connect an external ethernet device with an RJ-45 port.

2 x SwitchBlox Power Cables (Molex male to tinned wires)

Use this cable to connect a 5 – 51V DC power supply to power SwitchBlox.

Also use this cable to get a clean 5V, 2A supply from SwitchBlox to power external devices like Embedded Computers, Motor drivers, or IP Cameras.

Ethernet Pinout

Below is a handy graphic that shows how we transition from a Molex Picoblade pinout to the standard RJ-45 ethernet cables. For 10/100 Mbps ethernet we use two differential channels, transmit and receive, for a total of four conductors.

Additional information

Additional information

Weight 20 g
Dimensions 44.5 × 44.5 × 10 mm