SSL20-4TX/1FX-SM – 5-Port Single-Mode Fibre DIN Rail Switch by Hirschmann, a Belden Brand

The Hirschmann SSL20-4TX/1FX-SM is a five-port unmanaged industrial Fast Ethernet switch from the SPIDER III family, combining four auto-crossing, auto-negotiating, auto-polarity 10/100BASE-TX RJ45 copper ports with one 100BASE-FX single-mode fibre port using SC connectors, making it the long-reach version of the five-port SPIDER III access switch family. Identified by product code SPIDER-SL-20-04T1S29999SY9HHHH and part number 942132009, the switch supports single-mode 9/125µm fibre distances up to 30km with a 16dB link budget at 1300nm, enabling Ethernet connectivity across large industrial sites, substations, utility networks, and campus installations where multimode fibre distances are insufficient. Each copper port supports auto MDI/MDIX crossing and auto-negotiation for tool-free copper link establishment, and store-and-forward switching ensures data integrity at the copper-to-fibre boundary across all five ports. Power is supplied via a 3-pin terminal block accepting 12/24V DC within a 9.6V to 32V DC range, with a maximum of 2.4W and 100mA current draw at 24V DC, keeping panel heat generation minimal. The operating temperature is 0°C to +60°C, and the MTBF is rated at 2,286,711 hours under Telcordia methodology. The compact IP30 DIN rail plastic housing measures 26 x 102 x 79mm at 120g. Industrial EMC immunity including EN 61000-4-2 ESD at 6kV contact, EN 61000-4-4 burst at 2kV power line, and EN 61000-4-5 surge at 2kV line-to-earth is included, alongside CE, FCC Class A, EN61131, and cUL 61010-1/61010-2-201 approvals. IEC 60068-2-6 vibration and IEC 60068-2-27 shock compliance add mechanical robustness. A 60-month guarantee applies. Available from Recab, your Nordic partner for Hirschmann industrial Ethernet switch solutions.