Extreme Industrial Ethernet Switches - Refurbished, Used, and New

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Extreme Industrial Ethernet switches are compact DIN-rail switches built for plant floors, utility substations, outdoor cabinets, traffic and transit systems, and any site where a standard rack switch would not survive the heat, cold, dust or vibration. The ISW line in this collection pairs PoE+ RJ45 ports for cameras, access points and sensors with SFP fiber uplinks back to the main network, and it runs from DC power fed by a separate DIN-rail power supply. NetworkTigers sells Extreme industrial switches and the matching DIN-rail power supplies refurbished, used and new. Every unit is tested before it ships so it works when it arrives.

Industrial switches and power supplies

Model or part	Ports and power	Shop
16803	4x 1G PoE+ RJ45 and 2x 1G SFP, DIN-rail mount, DC input from an external supply	16803
16807	240 W AC-to-DC DIN-rail power supply for an industrial switch with a modest PoE load	16807
16920	480 W AC-to-DC DIN-rail power supply for a fully loaded PoE+ switch or more than one switch	16920
Switch and power supply pairs	The switch does not include its power supply; buy the 16803 with a 16807 or 16920 to get a complete, powered unit	16803 \| 16807
1G SFP uplink optics	Single-mode or multimode 1G SFP transceivers for the fiber uplinks back to the distribution switch	1G SFP
Related industrial	Other ruggedized switches and Extreme campus switching	Cisco industrial \| Aruba CX 4100i \| Extreme campus edge \| All Extreme

Which Extreme industrial switch do I need?

Count the powered devices first. The 16803 has four PoE+ RJ45 ports, so it suits a cabinet with up to four cameras, access points or controllers, plus two SFP ports for fiber uplinks or a ring to the next cabinet. Then size the power supply: add up the PoE draw of every device on the switch, add the switch's own consumption, and leave headroom for cold starts, which is where the 240 W 16807 or the 480 W 16920 comes in. A 480 W supply also lets one supply feed two switches in the same enclosure. Check the DC voltage the switch expects against the supply's output before you order, confirm the temperature range at the install site is within what the switch is rated for, and use fiber on the SFP ports for any run that leaves the building or crosses high-voltage equipment, since copper picks up electrical noise.

Frequently asked questions

Can an Extreme industrial switch be managed from the same tools as the campus switches?
Yes. The ISW switches are managed through a web interface, a CLI and SNMP, and they can be monitored alongside other Extreme switches in ExtremeCloud IQ or an SNMP management platform.

Do these switches need a fan or a cabinet with cooling?
No. They are fanless and cool by convection through the metal housing, which is why DIN-rail mounting with clear space around the unit matters more than airflow. Mount them vertically as the housing is designed and keep them away from heat sources in the cabinet.

What is the difference between a DIN-rail power supply and a normal switch power supply?
A DIN-rail supply is a separate brick that clips onto the same rail as the switch and converts site AC to the DC the switch runs on. It can be replaced without touching the switch, and two can be wired to the switch's dual DC inputs for redundancy.

NetworkTigers has sold enterprise network equipment since 1996. Every switch and power supply carries the NetworkTigers 365-day warranty. Need a quantity? Ask us for a quote.