Choosing an Ethernet switch for an industrial networking fieldbus often comes down to one uncomfortable question: how much switch do you actually need, and how much should you spend to get it? The two units in this comparison sit at opposite ends of the price ladder. The Cisco IE-3400-8P2S-A Rugged Series Industrial Ethernet Switch is listed at USD 3,400.00. The N-TRON 708TX Industrial Ethernet Switch is listed at USD 34.99. Both are marketed as industrial Ethernet switches, and both are suited to factory-floor communication. The challenge is deciding which one belongs in your specific setup.
Quick verdict
For a PLC/HMI-heavy network with a limited equipment budget, the N-TRON 708TX is the lower-cost route into industrial switching. For a deployment where the Cisco Rugged Series platform is a requirement and you can absorb the higher price, the IE-3400-8P2S-A represents the larger investment.
Comparison at a glance
| Attribute | Cisco IE-3400-8P2S-A | N-TRON 708TX |
|---|---|---|
| Listed price | USD 3,400.00 | USD 34.99 |
| Price bar | ||
| Condition | Used | Used |
| Model / MPN | IE-3400-8P2S-A / IE 3400 | N-TRON 708TX / 708TX |
| Stated focus | Rugged Series Industrial Ethernet Switch | Industrial automation, motion control, PLC/HMI communication |
Where each product wins
The Cisco IE-3400-8P2S-A has the upper hand if you need the Rugged Series designation in an industrial Ethernet switch. The listing says the unit was professionally pulled from a working office environment and tested to be working, so you are getting some pre-sale verification. The catch is the missing power adapter and possible surface wear.
The N-TRON 708TX wins when the purchase price is your main constraint. Its description emphasizes industrial automation, motion control, and PLC/HMI communication. At a much lower listed price than the Cisco unit, it leaves far more room in your budget for the rest of the build.
Cisco IE-3400-8P2S-A Rugged Series Industrial Ethernet Switch
The Cisco IE-3400-8P2S-A is the higher-priced option in this pairing, with a Rugged Series designation that stands out in its title. The description notes it was professionally pulled from a working office environment and tested to be working. That gives you a unit that has already been checked for operation. On the downside, the listing explicitly states that the power adapter is not included, so you will need to source one separately. The unit may also show light surface scratches, scuff marks, and edge wear from previous ownership. If you want the Cisco Rugged Series platform and can accept the extra cost and the missing adapter, this is the switch you'll be considering.
N-TRON 708TX Industrial Ethernet Switch
The N-TRON 708TX is the lower-priced option in this pairing. Its description positions it for industrial automation and motion control systems, with a specific focus on the communication needs of PLCs and HMIs. It highlights reliable performance and sturdy construction, which is useful when you're putting a switch on a factory floor. The trade-off is that this is a used unit, so you won't be getting a brand-new piece of hardware. If your application is centered on connecting PLCs and HMIs, the N-TRON 708TX gives you a switch that matches that use case without the higher dollar commitment.
Final choice by use case
Choose the N-TRON 708TX if you are assembling or repairing a fieldbus system on a tight budget, your network endpoints are mostly PLCs and HMIs, and you don't need the Cisco Rugged Series designator. Choose the Cisco IE-3400-8P2S-A if the Rugged Series platform is important to your deployment, you have the capital to spend at the Cisco level, and you are prepared to supply a power adapter and accept cosmetic wear. There is no universal right answer; the right switch is the one that matches both your network's needs and your spending plan.
