Hirschmann BRS20-24009999-TTDY99HHSESXX.X.XX: BRS20-24TX-EEC Selection Guide for Extended-Temperature High-Port-Count Copper Networks
Hirschmann BRS20-24009999-TTDY99HHSESXX.X.XX is the full ordering code for BRS20-24TX-EEC, part number 942170084. The switch provides twenty-four 10/100BASE-TX RJ45 ports, a metal housing and a -40 to +70 °C operating range. This fanless managed DIN rail configuration brings the temperature specification and the complete copper-port schedule into the same product selection.

Reference photograph: shared Hirschmann stock image. The photographed unit may show a different model; this image does not establish the configuration or availability of Hirschmann BRS20-24009999-TTDY99HHSESXX.X.XX.
Environmental suitability at a heavily connected node
Use actual enclosure conditions when evaluating the extended operating range. The switch is rated IP30, and its metal housing does not itself establish outdoor weather protection. The catalog specifies 1–95% relative humidity without condensation. Confirm that the cabinet arrangement protects the device and leaves access for servicing the many connected cables.
Technical facts for the selected BRS20 model
| Brand / series | Hirschmann / BOBCAT |
| Type | BRS20-24TX-EEC |
| Product code | BRS20-24009999-TTDY99HHSESXX.X.XX |
| Part number | 942170084 |
| Network connections | 24 × 10/100BASE-TX RJ45 |
| Mounting | DIN rail |
| Power supply | 2 × 12–24 V DC |
| Power consumption | 16 W |
| Operating temperature | -40 to +70 °C |
| Housing | Metal |
| Protection class | IP30 |
Power and connection planning
Power is specified through two 12–24 V DC inputs, with consumption of 16 W and a six-pin plug-in block for supply and signaling. All twenty-four network ports are copper Fast Ethernet connections. A link to the next switch occupies a port just like a connected device, so define the entire network-port schedule before finalizing the bill of materials.
Keep exact ordering and software information together
For a spare, compare BRS20-24TX-EEC, part number 942170084 and the full TTDY ordering code with the installed label. Preserve the configuration and firmware requirements alongside that record. The catalog lists EtherNet/IP, PROFINET, Modbus TCP and IEC 61850 MMS server / switch-model functions, but the system's required functions and settings still need to be confirmed during commissioning. Matching the port count alone does not settle those requirements.
Send an accurate product inquiry
HKXY inquiries should state the complete product code, quantity, intended temperature conditions and required delivery destination. Include the existing switch label where available, plus the firmware and documentation requirements. Ask for confirmation of the exact offered configuration, accessories, availability and lead time in the quotation.
Technical source: Belden catalog for Hirschmann BRS20-24TX-EEC.