Allen-Bradley · Stratix 2100
Allen-Bradley 1783-USP1S4T / 1783-USP2S6T Stratix 2100 Unmanaged Ethernet Switches
copper and SFP unmanaged switch pair
Product Profile
Where an unmanaged machine network must combine local copper devices with fibre media, Allen-Bradley 1783-USP1S4T and 1783-USP2S6T provide two Stratix 2100 alternatives in the same Layer 2 product family. Both place copper access and SFP-based network media in a compact industrial switching role without adding managed configuration.
Their shared system purpose is to carry device traffic between machine equipment and an optical or mixed-media path. Each uses fixed front-panel interface roles, so the network drawing can distinguish device-side copper connections from the fibre link rather than treating all ports as interchangeable.
The difference is the media capacity: 1783-USP1S4T pairs four copper connections with one fibre slot, while 1783-USP2S6T expands the machine side to six copper connections and the fibre side to two slots. The two models therefore share an unmanaged access-layer role but serve different connection architectures.
Technical Specifications
| Specification | 1783-USP1S4T / 1783-USP2S6T |
|---|---|
| Brand | Allen-Bradley |
| Product family | Stratix 2100 unmanaged Ethernet switches |
| Switching role | Layer 2 unmanaged |
| 1783-USP1S4T copper | 4 x 10/100Base-T(X) RJ45 |
| 1783-USP1S4T fiber | 1 x 100BASE-X SFP slot |
| 1783-USP1S4T consumption | 1.8 W |
| 1783-USP2S6T copper | 6 x 10/100Base-T(X) RJ45 |
| 1783-USP2S6T fiber | 2 x 100BASE-X SFP slots |
| 1783-USP2S6T consumption | 3.1 W |
| Protection class | IP30 |
| Mounting | DIN rail |
| Operating temperature | -40 to 75 °C (-40 to 167 °F) |
| Clearance, top/bottom/sides | 51 mm |
| Clearance, front | 64 mm |
Copper and fiber path verification
System focus
Copper and fiber path verification
Read the exact front-panel drawing before choosing a spare: the 1783-USP1S4T has one fiber slot after four copper ports, while the 1783-USP2S6T retains two fiber slots after six copper ports. A switch with the wrong SFP count can leave a ring or uplink cable without a destination even though the family name looks correct.
Use only the media type specified for the chosen port. The manual distinguishes the 100BASE-X SFP path from the 10/100Base-T(X) copper path, so a cable schedule should list both port number and medium rather than just a total port count.
- USP1S4T: 4 copper + 1 SFP
- USP2S6T: 6 copper + 2 SFP
- 100BASE-X fiber slots
Installation space and power check
Technical reference
Installation space and power check
Both units need readable indicators, accessible power connectors and unrestricted front-port cable space. Provide 51 mm at the top, bottom and sides and 64 mm at the front so the enclosure does not turn a small unmanaged switch into an inaccessible maintenance point.
Fit the device to the DIN rail, ground it using the prescribed chassis path, and connect the supply only after conductor polarity has been checked against the switch label. The catalog number should remain on the commissioning record because its 1.8 W versus 3.1 W published consumption follows the different port layouts.
- DIN rail and IP30
- 51 mm side clearance
- 1.8 W versus 3.1 W
Frequently Asked Questions
When a fiber path is requested, how should 1783-USP1S4T / 1783-USP2S6T be distinguished?
1783-USP1S4T / 1783-USP2S6T must be selected by the documented interface arrangement rather than a shared family name. 1783-USP2S6T specifically has two 100 Mb SFP slots beside six 100 Mb copper ports.
Why is a copper-only spare not automatically suitable for 1783-USP1S4T / 1783-USP2S6T?
The 1783-USP1S4T / 1783-USP2S6T pair includes RJ45 and SFP interface choices. A spare must preserve the installed media path and complete catalog designation.
What shared cabinet condition applies to 1783-USP1S4T / 1783-USP2S6T?
Both 1783-USP1S4T / 1783-USP2S6T are part of the DIN-rail, IP30 Stratix 2100 unmanaged-switch installation family. Their cabinet supply is specified as SELV/PELV.
How should an installer reserve space for 1783-USP1S4T / 1783-USP2S6T?
For the documented 1783-USP2S6T variant, use a 114 x 44 x 70 mm device envelope. The other pair member should be installed only after its own official dimensional record is confirmed.
What temperature risk should be checked for 1783-USP1S4T / 1783-USP2S6T?
1783-USP1S4T / 1783-USP2S6T use the listed -40 to 75 °C operating context for this Stratix 2100 family. Cabinet heat must be controlled within that published range.
Can 1783-USP1S4T / 1783-USP2S6T be treated as managed switches during startup?
No. 1783-USP1S4T / 1783-USP2S6T are identified as unmanaged Layer 2 switches. A commissioning plan should not rely on managed-switch functions that are not assigned to these models.
Moore Automation
Moore Automation
Responsive commercial support
Moore Automation provides a direct route for industrial automation component enquiries. Sharing the complete port-variant designation helps keep the response tied to the requested hardware.
- Original products
- Fast delivery
- 1-year warranty
- 12-hour online response
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