Hirschmann BRS20-4TX industrial switch for compact control cabinets: verified ports, power and replacement checks
Hirschmann BRS20-4TX is a compact managed DIN-rail Ethernet switch in the BOBCAT family. The manufacturer identifies four 10/100BASE-TX RJ45 ports and part number 942 170-001. This listing is for the exact BRS20-4TX reference; the shared collage is a category reference image, not a photo of this exact unit.
Key technical data
| Technical item | Verified value / selection note |
|---|---|
| Complete type | BRS20-4TX |
| Manufacturer order number | 942 170-001 |
| Product family | Hirschmann BOBCAT managed DIN-rail switch |
| Ethernet ports | 4 × 10/100BASE-TX RJ45 |
| Operating supply | 12–24 V DC for the standard variant in the manufacturer brochure |
| Ambient rating | 0 to +60 °C for the standard brochure variant |
| Management | HiOS Layer 2 Standard in manufacturer brochure |
| Installation | DIN rail; verify terminal and wiring arrangement from the installed label |
For BRS20-4TX, the manufacturer description establishes the product class, while the installed code and site drawing establish the actual configuration. Check both sources before treating a related code as a drop-in replacement.
What the four ports are for
The four copper ports make BRS20-4TX suitable for a small machine cell, a cabinet edge network or a local control segment. Before ordering BRS20-4TX, count the actual Ethernet connections, confirm whether a fiber uplink is required and record the existing network topology. A visual match to a larger BOBCAT chassis does not make the interfaces identical.
Keep the exact BRS20-4TX wording, the official product record and the installed equipment evidence together in the order file.
Power and cabinet checks
Confirm the available DC supply, wiring polarity, terminal type and cabinet temperature for BRS20-4TX. The brochure's standard temperature range must not be applied to EEC or custom-configured variants without checking their separate data. Allow room for the Ethernet connectors and service access on the DIN rail.
Configuration handover
A managed BRS20-4TX replacement may need VLAN, redundancy, security, IP-address and monitoring settings. Save the current configuration and software information before removing an installed switch. After installation, check every port link and the application traffic rather than relying only on a power LED.
Purchasing decision
Ask the supplier to quote BRS20-4TX with the exact order reference, condition, firmware and included terminals. If another BRS20 code is offered, compare port count, copper or fiber media, power and software options in writing before approving it as a replacement.
Similar-looking model and order references
The BRS20 strings below share a visible family pattern. They may differ in port count, fiber media, software, supply or environmental options; none is asserted to be directly interchangeable with BRS20-4TX.
Final enquiry check
For BRS20-4TX, match the full printed type, order number and installed interface. Ask for written confirmation if the offered unit differs in code, revision or included accessories. Retain the site approval and receiving result with the BRS20-4TX asset record.
A useful quotation for BRS20-4TX includes condition, availability, documentation and return terms as well as the technical reference. Test the delivered item in the actual application under the site's authorized maintenance procedure.
