The Hirschmann BOBCAT BRS20-4TX/2SFP-EEC is the extended temperature variant of Hirschmann’s compact 6-port SFP-uplink managed Fast Ethernet BOBCAT switch, combining a -40 to +70°C operating range with two interchangeable 100 Mbit/s SFP uplink slots that accept single-mode, long-haul single-mode, and multimode fiber modules. Manufactured by Hirschmann, a Belden brand, it is designed for harsh-environment applications in railway rolling stock and wayside systems, outdoor energy substations, wind farm control networks, and heavy industrial plant across Nordic and Baltic climates where both thermal extremes and fiber backbone connectivity must be accommodated from a single compact DIN rail device, with the added benefit of SFP media flexibility allowing fiber type selection to match the infrastructure at each installation point. The switch provides 4x 10/100BASE-TX RJ45 copper ports alongside the two SFP uplinks in a 57 mm wide fanless PC-ABS DIN rail housing rated to IP30, with dual redundant 12 to 24 VDC power inputs and USB-C local management consuming 7 W. TSN 802.1Qbv support on interfaces 1/1 to 1/3 delivers deterministic real-time Ethernet across both copper and fiber segments, and the full industrial protocol suite — PROFINET, EtherNet/IP, Modbus TCP, IEC61850 — ensures direct integration with PLCs, SCADA, and protection relay systems across automation, energy, and transportation sectors. Redundancy capabilities span HIPER-Ring, MRP (IEC62439-2) as both client and manager, RSTP, LACP, Link Backup, and Redundant Network Coupling. Security features include Secure Boot, signed firmware, 802.1X, RADIUS, VLAN-based ACLs, and DoS prevention. Vibration and shock compliance per IEC 60068-2-6 and IEC 60068-2-27, an MTBF of approximately 5.72 million hours, and a 60-month guarantee confirm its suitability for demanding long-lifecycle field deployments. Available from Recab, your Nordic partner for Hirschmann industrial switch solutions.