Hirschmann BRS20-04009999-STCY99HHSESXX.X.XX: BRS20-4TX Technical Selection Guide for Compact Managed Copper Ethernet Connections
Hirschmann BRS20-04009999-STCY99HHSESXX.X.XX is the BRS20-4TX ordering code, associated with part number 942170001. This compact BOBCAT switch provides four 10/100BASE-TX RJ45 ports in a managed, fanless DIN rail device. The PC-ABS enclosure is 57 mm wide, with a full dimension set of 57 × 138 × 115 mm, making installation space a useful selection consideration.
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 BRS20-04009999-STCY99HHSESXX.X.XX.
Dimensions, interfaces and supply at a glance
| Brand / series | Hirschmann / BOBCAT |
| Type | BRS20-4TX |
| Product code | BRS20-04009999-STCY99HHSESXX.X.XX |
| Part number | 942170001 |
| Network connections | 4 × 10/100BASE-TX RJ45 |
| Mounting | DIN rail |
| Power supply | 2 × 12–24 V DC |
| Power consumption | 5 W |
| Operating temperature | 0 to +60 °C |
| Housing | PC-ABS |
| Protection class | IP30 |
| Dimensions (W × H × D) | 57 mm × 138 mm × 115 mm |
| Weight | 380 g |
Four ports require a deliberate connection plan
A small switch can suit a limited connection point, but every network link must be counted. If one port is used to connect upstream, that leaves three physical ports for other connections in that arrangement. Review service access and future additions before confirming the four-port choice. The published twisted-pair segment range is 0–100 m.
Small footprint with industrial control-power details
The unit is listed at 380 g, with IP30 protection and an operating range of 0 to +60 °C. Two 12–24 V DC supply inputs and 5 W consumption are specified. The catalog includes a six-pin power/signaling block and a separate two-pin digital input. Check cabinet clearance, plug access and the actual temperature at the DIN rail position.
Managed behavior remains part of the specification
A four-port unit still needs an approved network configuration and a clear asset record. The listed industrial profiles include EtherNet/IP, PROFINET, Modbus TCP and IEC 61850 MMS server / switch-model functions. Verify required firmware and features before installation, then record port assignments and settings. This helps keep a future spare purchase aligned with the installed unit rather than with only its appearance or size.
Information to include in your RFQ
For a quotation, provide HKXY with the complete product code, BRS20-4TX, part number 942170001 and quantity. State whether the unit is for a new machine or an installed-system spare. Include the required supply voltage, available cabinet space, firmware reference and delivery destination to define the supply requirement.
Technical source: Belden catalog for Hirschmann BRS20-4TX.
