Quick Verdict
If your industrial networking fieldbus needs a switch that can be dropped into a demanding automation environment right away, the Cisco IE-3400-8P2S-A Rugged Series is the stronger, more expensive choice-provided you are comfortable with a used unit and sourcing a power adapter. If you want the more affordable option for factory automation and process control, the PHOENIX CONTACT 1085255 is the practical pick. The $3,205 price gap between them is the first thing to settle in your mind.
Price and Specs at a Glance
| Feature | Cisco IE-3400-8P2S-A Rugged Series | PHOENIX CONTACT 1085255 |
|---|---|---|
| Listed price | USD 3,400.00 | USD 194.99 |
| Condition | Used | New In Box |
| Model | IE 3400 | 1085255 |
| Target role | Rugged Series industrial switch | Industrial Ethernet switch for factory automation |
Where the Cisco Wins
The Cisco IE-3400-8P2S-A is the choice when your network needs the Rugged Series designation and the assurance of a switch known to be in working order. The unit's rugged industrial positioning makes it a strong candidate for replacing a unit in an existing Cisco-based industrial network.
Where the Phoenix Wins
The PHOENIX CONTACT 1085255 wins on affordability. It is a much smaller upfront investment, so it fits tighter budgets, and its new-in-box status means you are the first owner. The rugged design described for the Phoenix is aimed at resisting vibration and electrical interference, making it a sensible fit for factory automation and process control networks. For a fresh installation that does not need to match an existing Cisco environment, this switch offers a clean starting point.
Product Notes
#### Cisco IE-3400-8P2S-A Rugged Series Industrial Ethernet Switch

The Cisco makes the most sense when you are running an industrial network where the Rugged Series positioning matters and you need the Cisco model designation. This switch was professionally pulled from a working office environment and tested to be working, so it comes to you as a known, functional unit rather than a blind purchase. The main limitation to plan around is the power adapter: it is not included, so your installation will need a power source with the correct connection ready before you go live. That is a small but important detail. If you already run other Cisco networking gear, this switch is likely to slot in more naturally than a switch from a different product line. The Rugged Series name gives you a specific industrial positioning that some buyers will want to match across their network.
#### PHOENIX CONTACT 1085255 Industrial Ethernet Switch

The Phoenix is the right call when you want a switch that arrives from the factory ready for industrial duty. It is specifically described as ideal for factory automation and process control networks, with a rugged design that resists vibration and electrical interference. For a fresh build on an assembly line or in a process control cabinet, that is exactly the kind of component you want to install. The trade-off is that it does not carry the Cisco Rugged Series designation, so if your procurement or engineering standards require that specific series name, the Cisco is the one to spec. If you do not need that naming, the Phoenix stands on its own as a direct industrial switch. It is a straightforward, no-frills option for getting automation devices talking to control systems.
Final Choice by Use Case
If you are building a new industrial network on a budget and want a switch that is ready for factory automation, choose the PHOENIX CONTACT 1085255. If you need a rugged-series switch with the Cisco model number, the Cisco IE-3400-8P2S-A is the one to buy.