The Hirschmann BOBCAT BRS20-4TX/2SFP is a 6-port managed industrial Fast Ethernet switch from Hirschmann, a Belden brand, designed for industrial automation and infrastructure networks where fiber uplink media flexibility is a priority. Unlike fixed-fiber variants, the two 100 Mbit/s SFP uplink slots accept interchangeable SFP modules supporting single-mode, long-haul single-mode, and multimode fiber types, allowing network engineers to tailor the fiber media to the specific distance and infrastructure requirements of each installation without changing the switch hardware. Combined with 4x 10/100BASE-TX RJ45 copper ports, USB-C local management, and dual redundant 12 to 24 VDC power inputs in a 57 mm wide fanless PC-ABS DIN rail housing rated to IP30 and 0 to +60°C, the BRS20-4TX/2SFP is well suited to machine builders, panel integrators, and system architects who need a compact, future-adaptable fiber-capable switch. TSN 802.1Qbv support on interfaces 1/1 to 1/3 brings deterministic real-time Ethernet to compact SFP-connected nodes, while the full redundancy stack — HIPER-Ring, MRP (IEC62439-2) as both client and manager, RSTP, LACP, Link Backup, and Redundant Network Coupling — enables participation in high-availability ring and star topologies. PROFINET, EtherNet/IP, Modbus TCP, and IEC61850 protocol support ensures compatibility with major PLC, SCADA, and protection relay platforms across manufacturing, energy, and process sectors. Security features include Secure Boot, signed firmware, 802.1X, RADIUS, VLAN-based ACLs, and DoS prevention. With an exceptional MTBF of approximately 5.72 million hours and a 60-month guarantee, the BRS20-4TX/2SFP is one of the most reliable compact fiber-capable switches in the BOBCAT family. Available from Recab, your Nordic partner for Hirschmann industrial switch solutions.