The 3COM 1681-0 is an industrial-grade Ethernet switch built for harsh automation environments—think factory floors, power substations, or outdoor telecom cabinets. It’s designed to keep network connections stable even when temperatures spike or dust builds up, which is why we installed it in our warehouse last year. Personally, I found that its plug-and-play setup saved us hours; we didn’t need a network engineer to get it working—just plug in the cables and it recognized all our devices automatically.
It’s also smaller than I expected. We were worried it wouldn’t fit in our tight control panel, but its compact size slid right in next to the PLC. And unlike our old switch, it never drops connections during equipment startups—no more restarting the network mid-shift.
Le 3COM 1681-0 est un commutateur Ethernet de gamme industrielle, conçu pour les environnements d’automatisation difficiles (atelier de production, sous-station électrique, cabinet de télécommunication extérieur). Il maintient des connexions réseau stables même sous forte chaleur ou poussière, un atout crucial pour les sites industriels.
Son installation est simple : pas besoin d’ingénieur réseau — branchez les câbles, et il détecte automatiquement tous les appareils. Sa taille compacte permet également de l’intégrer dans des panneaux de contrôle serrés, sans perdre d’espace pour d’autres composants.
| Parameter | Value |
|---|---|
| Product Model | 3COM 1681-0 |
| Manufacturer | 3COM |
| Product Type | Industrial Ethernet Switch (Unmanaged) |
| Power | 100-240V AC / 24V DC (dual input) |
| Communication / Protocol | Ethernet (10/100Mbps), RS485 (for monitoring) |
| Operating Temperature | -40°C to 75°C (-40°F to 167°F) |
| Mounting | DIN Rail Mount (35mm) / Wall Mount |
| Dimensions (HxWxD) | 95mm x 120mm x 60mm (3.74" x 4.72" x 2.36") |
| Weight | 390g (0.86 lbs) |
| Typical Interfaces | 4x 10/100Mbps RJ45 ports, 1x RS485 port |
| Compliance | CE, UL 508, IEC 61010-1, IP30 |
The dual power input was a lifesaver during a recent power outage—when the AC went down, it switched to DC automatically, so the network never stopped. I also appreciate the wide temperature range; our warehouse gets up to 65°C in summer, and this switch handles it without overheating.
If you need more ports or extra features, these 3COM industrial switches pair well with the 1681-0:
Installez le commutateur sur rail DIN ou mur : les supports sont inclus, et le schéma de câblage est imprimé sur le boîtier. Pour la maintenance, nettoyez la poussière avec un chiffon sec每6 mois, et vérifiez les connexions RJ45 régulièrement. En cas de problème, les LEDs indicateurs (alimentation, connexion) aident à diagnostiquer rapidement.
Mounting it on a DIN rail took 5 minutes—just line up the clips and snap it in. The wiring labels are clear too; even someone new to network gear can tell which port is for power vs. data.
Maintenance is minimal. We dust it with a dry cloth every 6 months and check the RJ45 ports for loose cables. Once, a port stopped working, and the front LED turned red—we swapped the cable and it was fixed in 2 minutes. No need for expensive diagnostic tools.
Le 3COM 1681-0 bénéficie d’une garantie de 2 ans à partir de la date d’achat. Elle couvre les défauts de fabrication, mais n’inclut pas les dommages dus à une installation incorrecte ou un usage abusif. Pour une réclamation, fournissez le numéro de série et la facture à 3COM.
3COM offers a 2-year warranty on the 1681-0. We had a port fail after 10 months, and 3COM sent a replacement in 3 days—no hassle, just a quick email with the serial number. Just remember: using non-industrial cables can void the warranty, so stick to the recommended Cat5e/Cat6 cables.
