The Hirschmann RSP25-11003Z6ZT-SK9V9HPE2S is a hardened managed fanless DIN rail switch from the RSP25 series, sharing the same eleven-port architecture as the standard RSP25 — four 10/100BASE-TX RJ45 copper ports and seven SFP Fast Ethernet slots — but distinguished by its single high-voltage universal power input accepting 60–250 VDC (48–320 VDC range) and 110–230 VAC (88–265 VAC), making it uniquely suited for substations, power plants, and industrial sites where high-voltage AC or DC power distribution is available but low-voltage 24 VDC feeds are not. Power consumption is 22 W. The enhanced software feature set matches the broader RSP25 series, delivering PRP per IEC62439-3, HSR, Fast MRP per IEC62439-2, RSTP, LACP link aggregation, link backup, and HSR-PRP RedBox and SAN RedBox configurations for maximum network resilience in power infrastructure. NAT with L3 routing supports network address translation and static IP routing for complex segmented OT architectures. Industrial protocol compatibility covers PROFINET, IEC61850 MMS server, EtherNet/IP, and Modbus TCP for deep integration with protection relays, PLCs, and IEDs across energy and process automation environments. Management, security, diagnostics, and time synchronisation capabilities are identical to the rest of the RSP25 enhanced family, including SNMP v1/v2/v3, SSHv2, 802.1X, RADIUS, PTPv2, and ACA31 SD card autoconfiguration. IEC 61850-3 and IEEE 1613 substation certifications, CE, FCC, EN61131 basis approval, 0 to +60 degrees Celsius operation, and a 60-month product guarantee apply. Available from Recab, your Nordic partner for Hirschmann industrial switch solutions.