Eight local copper connections, four optical paths: Hirschmann BRS30-0804OOOO-STCY99HHSESXX.X.XX
Hirschmann BRS30-0804OOOO-STCY99HHSESXX.X.XX brings eight 10/100BASE-TX RJ45 ports and four 100/1000 Mbit/s SFP slots into a fanless DIN rail switch. The BRS30-8TX/4SFP configuration is worth considering when a machine network needs copper connections for local equipment and separately selected fiber links to the surrounding network. Its twelve-port total includes both groups; the eight RJ45 ports are Fast Ethernet, even when a fitted optical link operates at Gigabit speed.
Where the four SFP positions make a difference
Using an optical slot for the connection to another cabinet leaves the eight copper interfaces available for local devices. A design could allocate two optical positions to a supported ring and reserve the others for separate paths or expansion. That is an example of port allocation, not a preconfigured topology: the selected redundancy method and peer devices still determine the working arrangement.
This distinction matters when comparing the switch with an all-copper model. A project that needs Gigabit RJ45 connections for local equipment requires a different port specification. Here, the higher-rate capability is in the SFP group. Assess traffic through each proposed uplink, especially where several local devices share the same path.
Order the optical connection, not just an empty slot
The switch code identifies four SFP positions but does not identify a particular fitted transceiver. The official fiber-distance fields refer to the SFP modules, so there is no single fiber reach to assign to this switch. For each path, specify a supported module with the required operating rate, fiber type, connector and optical characteristics. Check it against the far-end interface and the link budget.
| Switch reference | Hirschmann BRS30-0804OOOO-STCY99HHSESXX.X.XX |
|---|---|
| Catalog Type | BRS30-8TX/4SFP |
| Part Number | 942170007 |
| Copper connections | 8 × 10/100BASE-TX, RJ45 |
| Optical positions | 4 × SFP slots, 100/1000 Mbit/s |
| Module selection | Specify supported transceiver references and quantities for the intended links. |
Keep the transceivers as separate line items in the inquiry and confirm the offered supply scope. A 100 Mbit/s module and a 1000 Mbit/s module do not describe the same optical connection, and sharing the SFP form factor does not establish compatibility. The exact module selection also determines the fiber reach and must suit the installation conditions.
Hirschmann reference image. The pictured configuration may differ from BRS30-8TX/4SFP.
Managing traffic and locating a link problem
VLANs and traffic prioritization allow port roles to follow the equipment groups and traffic classes in the design. IGMP snooping/querier functions are relevant where the application uses multicast. For redundant connections, the catalog lists HIPER-Ring, MRP and RSTP; LACP is also listed for link aggregation. Choose these functions according to the required topology rather than enabling several overlapping arrangements without a defined purpose.
The diagnostic tools distinguish copper-side checks from optical-side checks. Copper cable testing and speed/duplex monitoring help investigate an RJ45 connection, while SFP management supports inspection of the optical interfaces. Port mirroring and Syslog provide additional information when a link is present but application traffic needs investigation. HTTPS, SSHv2 and SNMP provide documented management access options.
For time-sensitive projects, the catalog lists PTPv2 and 802.1AS functions, with TSN 802.1Qbv support specifically stated for interfaces 1/1–1/3. Treat that interface restriction as part of the selection; it should not be generalized to all twelve ports or taken as a guarantee of application timing.
A 73 mm-wide device for a protected cabinet
| Enclosure dimensions (W × H × D) | 73 × 138 × 115 mm |
|---|---|
| Weight | 570 g |
| Housing / mounting | PC-ABS / DIN rail |
| Operating temperature | 0 to +60 °C |
| Ingress protection | IP30 |
| DC supply | 2 × 12–24 V DC |
| Power consumption / heat output | 9 W / 31 BTU/h |
| Local management connection | USB-C |
The dimensions describe the enclosure; leave additional room for connectors and optical patch-cord routing. This is the standard-temperature PC-ABS version. If the cabinet requires extended-temperature operation, compare the corresponding complete EEC reference before ordering. The IP30 rating also needs to be considered with the surrounding cabinet protection.
For a configuration-specific quotation, send Hirschmann BRS30-0804OOOO-STCY99HHSESXX.X.XX, part number 942170007, the quantity and the four-slot transceiver plan. Identifying the optical modules at the inquiry stage makes the offered connection scope easier to compare.
Manufacturer configuration reference: Hirschmann BRS30-8TX/4SFP
