1783-US6T2H — Stratix 2000 Unmanaged Switch, 6 Copper + 2 Fiber Ports

The 1783-US6T2H is an unmanaged Stratix 2000 industrial Ethernet switch with six RJ-45 copper ports and two 100BASE-FX fiber optic ports. All eight ports operate at 10/100 Mbps. It runs on 24V DC, mounts on a 35 mm DIN rail, and requires no configuration. The fiber ports accept standard 100BASE-FX SFP modules (multimode, SC connector), extending the switch's reach beyond the 100 m copper limit and providing immunity to EMI on long cable runs between panels.

Specifications

Parameter	Value
Part Number	1783-US6T2H
Copper Ports	6 × RJ-45, 10/100 Mbps, auto-negotiate, auto-MDIX
Fiber Ports	2 × 100BASE-FX, SFP (multimode, SC)
Max Fiber Distance	2 km (multimode, 62.5/125 μm typical)
Management	None — unmanaged
Switching Mode	Store-and-forward
Power Input	24V DC (18–32V DC)
Power Consumption	~5W typical
Mounting	35 mm DIN rail
Enclosure	IP20
Operating Temperature	−10°C to 60°C
Standards	UL 508, CE, ATEX Zone 2

Copper + Fiber in One Device

The hybrid port configuration solves a specific architectural problem: local devices at a panel node connect via copper, while the connection to a distant panel, building section, or main switch room goes over fiber. In a typical deployment, the six copper ports serve the drives, I/O adapters, and HMI within the local enclosure; the two fiber ports carry the network connection to and from the broader machine or plant network.

The unmanaged design means no setup is required. Connect copper devices, connect fiber uplinks, apply power. There are no VLANs, no QoS, no configuration to corrupt. For machine nodes where the only requirement is physical connectivity — including a long-distance fiber run — the 1783-US6T2H handles it without the overhead of a managed switch.

Where Fiber Solves Problems Copper Can't

Three situations where the fiber ports are functionally necessary, not just convenient:

Distances beyond 100 m: IEEE 802.3 limits 100BASE-TX copper to 100 m. Fiber at 100BASE-FX supports 2 km on multimode, eliminating the need for intermediate switches or media converters on long inter-panel runs.
High-EMI environments: drives, welders, and arc furnaces generate electromagnetic interference that degrades copper Ethernet signals on long cable runs. Fiber is immune to EMI — no induced noise, no signal degradation, regardless of what runs adjacent to the fiber cable.
Ground potential difference between panels: copper Ethernet requires a shared ground reference between connected panels. When two panels have different ground potentials (common in large facilities with multiple distribution panels), copper connections can inject ground loop currents into the network. Fiber has no ground path — it bridges panels with different potentials safely and without network interference.

FAQ

Q: Are SFP modules included with the switch?

No. The SFP transceivers for the fiber ports are ordered separately. Select modules compatible with the cable type and distance in use — 100BASE-FX SFPs for standard multimode applications up to 2 km.

Q: Can the fiber ports connect to a managed switch or media converter at the other end?

Yes. The fiber ports are standard 100BASE-FX interfaces compatible with any device that supports 100BASE-FX — managed switches, other unmanaged switches, or dedicated media converters. Both ends of the fiber link need compatible 100BASE-FX interfaces.

Q: Does this switch support DLR topology?

No — it's unmanaged and doesn't support DLR ring supervision. For DLR, a managed switch with ring supervisor capability or dual-port EtherNet/IP devices forming the ring directly are required.

Q: Can a fiber port and a copper port be bridged for a media conversion function?

Yes, that's a standard use case. The switch internally bridges all ports. A device connected to a copper port communicates transparently with a device connected via the fiber uplink — the switch handles the copper-to-fiber media conversion in the process.

1783-US6T2H Brand New 1783US5T Stratix 2000 Ethernet Switch Series B