Choosing Hirschmann BRS20-0600Z6Z6-STCX99HHSESXX.X.XX for Compact BOBCAT Networks with Four Copper Connections and Selectable Fiber Links
Hirschmann BRS20-0600Z6Z6-STCX99HHSESXX.X.XX identifies the Hirschmann BRS20-4TX/2SFP-HL, part number 942170029. This BOBCAT managed switch provides four 10/100BASE-TX RJ45 ports and two SFP slots rated for 100 Mbit/s. The 57 mm-wide fanless device is a compact option to review when a cabinet needs local copper connections and fiber interfaces selected to suit the installed cable. Its SFP slots should not be specified as Gigabit uplinks.
Match the optics before comparing prices
An SFP-based order needs more detail than the switch code alone. Identify the fiber type, wavelength, connector and link distance at both ends, then confirm a compatible 100 Mbit/s module. The source catalog refers fiber-distance information to the selected SFP; it does not establish one universal transmission distance for this switch.
Ordering identity and cabinet requirements
| Brand / series | Hirschmann / BOBCAT |
| Type | BRS20-4TX/2SFP-HL |
| Product code | BRS20-0600Z6Z6-STCX99HHSESXX.X.XX |
| Part number | 942170029 |
| Ports | 4 × 10/100BASE-TX RJ45; 2 × 100 Mbit/s SFP slots |
| Operating temperature | 0 to +60 °C |
| Supply inputs | 2 × 12–24 V DC |
| Power consumption | 7 W |
| Mounting | DIN Rail |
| Dimensions (W × H × D) | 57 mm × 138 mm × 115 mm |
| Housing / protection | PC-ABS / IP30 |
| Weight | 420 g |
| Hazardous-location standard listed | ISA12.12.01; verify certificate conditions |
Document the HL requirement
The manufacturer listing includes ISA12.12.01 under hazardous-location approvals. Obtain the certificate and installation conditions relevant to the delivered device before using that listing in a project specification. The HL Type suffix does not justify assuming every hazardous-area classification or installation method is permitted. Keep approval review separate from the choice of fiber module.

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 BRS20-0600Z6Z6-STCX99HHSESXX.X.XX.
A practical replacement check
Record the existing port assignments and configuration before removal. Check the 0 to +60 °C operating range against the temperature inside the enclosure, and allow access to the supply and signaling terminals. A physically similar BOBCAT unit may have a different port arrangement, temperature option or ordering code; the front-panel appearance alone is insufficient.
Information for your HKXY enquiry
Ask HKXY to quote BRS20-4TX/2SFP-HL using product code BRS20-0600Z6Z6-STCX99HHSESXX.X.XX and part number 942170029. Add the requested SFP types, quantity, destination and approval documentation needed. Agree the supplied accessories and delivery schedule in the quotation.
Technical reference: Belden catalog for Hirschmann BRS20-4TX/2SFP-HL.