Specify Hirschmann BRS20-1000M2M2-TTCY99HHSESXX.X.XX for BOBCAT DIN Rail Networks Combining Multimode Fiber with an Extended Temperature Range
The Hirschmann BRS20-8TX/2FX-EEC, part 942170014, uses product code BRS20-1000M2M2-TTCY99HHSESXX.X.XX. This EEC preset combines eight 10/100BASE-TX RJ45 interfaces with two fixed 100BASE-FX MM-SC links. Its -40 to +70 °C operating range distinguishes it from the standard-temperature multimode version, while the fiber connections remain Fast Ethernet rather than Gigabit.
Selected EEC configuration at a glance
| Brand / series | Hirschmann / BOBCAT |
| Type | BRS20-8TX/2FX-EEC |
| Product code | BRS20-1000M2M2-TTCY99HHSESXX.X.XX |
| Part number | 942170014 |
| Ports | 8 × 10/100BASE-TX RJ45; 2 × 100BASE-FX multimode SC |
| Operating temperature | -40 to +70 °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 | 570 g |
Two engineering checks: temperature and fiber
Start with the expected temperature at the DIN rail location, then review the optical route separately. Passing the temperature check does not establish that a multimode port matches the cable or the far-end equipment. Check core size, optical budget and connector condition, and verify that both connected interfaces are the appropriate 100BASE-FX type.

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-TTCY99HHSESXX.X.XX.
Know what the enclosure rating covers
The device has a PC-ABS housing with IP30 protection. An extended operating range is not a weatherproofing claim; the installation still needs an enclosure appropriate to its environment. Include local heat sources, cable access and the available supply arrangement in the design review rather than assessing the switch in isolation.
Use route details in the quotation
A useful fiber description states the cable type, length and far-end switch instead of simply saying “fiber uplink.” The source references up to 5,000 m on 50/125 µm and 4,000 m on 62.5/125 µm multimode fiber under specified loss assumptions. Actual connector and splice losses must be evaluated before accepting a planned route.
Request a configuration-specific HKXY quotation
Ask HKXY for Hirschmann BRS20-1000M2M2-TTCY99HHSESXX.X.XX, Type BRS20-8TX/2FX-EEC, with the required quantity and delivery location. Add the temperature requirement and multimode cable details. The written quote should identify part 942170014 and confirm accessories, documentation and the expected delivery schedule.
Technical reference: Belden catalog for Hirschmann BRS20-8TX/2FX-EEC.