All-Copper Port Allocation and Cabinet Installation Review for Hirschmann BRS40-00209999-STCY99HHSESXX.X.XX BRS40 Twenty-Port Managed Ethernet Switch
Hirschmann BRS40-00209999-STCY99HHSESXX.X.XX identifies Type BRS40-20TX, part number 942170089, in the Hirschmann BOBCAT range. For a cabinet designed around copper Ethernet cabling, this configuration offers twenty RJ45 interfaces supporting 10/100/1000BASE-TX. There are no SFP positions in the specified layout. It is therefore a different purchasing choice from a twenty-port switch that divides its connections between copper sockets and removable fiber modules, even when both descriptions use the same total port count.
Turn the equipment list into a port map
Count each controller, operator terminal, drive interface and connection to another switch that needs a physical port. Reserve service and expansion capacity deliberately instead of treating all twenty sockets as available for end devices. Record intended link speeds and cable destinations, then compare that schedule with the selected hardware before purchasing the switch.
Copper reach is a cabling requirement
The source lists a 0–100 m twisted-pair segment reference. Check installed cable construction, terminations and the applicable Ethernet cabling requirements before commissioning Gigabit links. A higher interface rating does not repair damaged cabling or force an older endpoint to operate faster. Where a route requires fiber, select the appropriate verified configuration rather than assuming optics can be added here.
Configuration data
| Brand / range | Hirschmann / BOBCAT |
| Type | BRS40-20TX |
| Product code | BRS40-00209999-STCY99HHSESXX.X.XX |
| Part number | 942170089 |
| Ethernet interfaces | 20 × 10/100/1000BASE-TX RJ45 |
| Operating Voltage | 2 × 12–24 V DC |
| Power Consumption | 17 W |
| Operating temperature | 0 to +60 °C |
| Dimensions (WxHxD) | 109 mm x 138 mm x 115 mm |
| Housing | PC-ABS |
| Mount Type | DIN Rail |
| IP Protection Rating | IP30 |
| Local Management and Device Replacement | USB-C |

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 BRS40-00209999-STCY99HHSESXX.X.XX.
Provide room for a fully connected switch
The listed housing is 109 × 138 × 115 mm, with PC-ABS construction and DIN rail mounting. Twenty connected cables need managed routing and access for maintenance beyond the housing dimensions. Include the 17 W consumption in the cabinet review and check the temperature at the device position against its 0 to +60 °C operating range.
Enquire with HKXY
Send HKXY the complete twenty-port copper reference, quantity and destination. Add your documentation requirements and target delivery date, with a label photograph if the request is for an installed-base replacement.
Technical reference: Belden catalog for BRS40-20TX. Confirm the current documentation and supplied revision before final engineering approval.