Connecting Copper Equipment and Multimode Fiber with Hirschmann BRS20-1000M2M2-STCY99HHSESXX.X.XX, the BRS20-8TX/2FX BOBCAT Ethernet Switch
Hirschmann BRS20-1000M2M2-STCY99HHSESXX.X.XX identifies the ten-port Hirschmann BRS20-8TX/2FX, part 942170004. The connection layout combines eight 10/100BASE-TX RJ45 ports with two fixed 100BASE-FX multimode SC interfaces. This layout separates local copper cabling from the fiber connections without requiring an SFP choice for those two fixed optical ports. All listed fiber interfaces operate at 100 Mbit/s.
Reference photograph: shared Hirschmann product image. The photographed unit may be a different model; this image does not establish the configuration or availability of Hirschmann BRS20-1000M2M2-STCY99HHSESXX.X.XX.
A fixed optical interface must match the far end
Specify multimode fiber and the SC connector arrangement when reviewing the route. The fixed MM-SC ports are not single-mode ports or interchangeable SFP slots. Check the optical characteristics and connector preparation at the opposite switch before ordering; a matching connector shape alone does not prove that the two ends are compatible.
Port layout and cabinet data
| Brand / series | Hirschmann / BOBCAT |
| Type | BRS20-8TX/2FX |
| Product code | BRS20-1000M2M2-STCY99HHSESXX.X.XX |
| Part number | 942170004 |
| Ports | 8 × 10/100BASE-TX RJ45; 2 × 100BASE-FX multimode SC |
| Operating temperature | 0 to +60 °C |
| Supply inputs | 2 × 12–24 V DC |
| Power consumption | 8 W |
| Mounting | DIN Rail |
| Dimensions (W × H × D) | 73 mm × 138 mm × 115 mm |
| Housing / protection | PC-ABS / IP30 |
| Weight | 500 g |
Interpret the catalog distance correctly
The manufacturer lists 0–5,000 m for 50/125 µm multimode fiber and 0–4,000 m for 62.5/125 µm, under its stated link-budget conditions. These are engineering references, not guarantees for any installed cable route. Include connector, splice and cable losses in the assessment and keep the specified optical reserve in the design.
From network drawing to enclosure layout
The standard-temperature device is specified for 0 to +60 °C, and power consumption is 8 W. Allow access to the optical connectors as well as the copper plugs when planning the 73 mm-wide DIN rail position. Keep the port assignments and fiber identification clear so maintenance staff can reconnect the intended links.
Information for your HKXY enquiry
For an HKXY quotation, send BRS20-1000M2M2-STCY99HHSESXX.X.XX, part 942170004, quantity and the existing fiber specification. Include the far-end equipment model where available. Confirm the exact fixed-optic configuration and delivery requirements rather than requesting only a generic ten-port switch.
Technical reference: Belden catalog for Hirschmann BRS20-8TX/2FX.
