Port count alone does not determine whether an Ethernet switch fits a railway project. The onboard voltage and the temperature at the installation point can be just as important. The ITP-G804T series keeps the same port layout across all four models; the DC input and operating temperature determine the right choice.
Four Models for Railway Power and Temperature Requirements
| Model | Nominal supply voltages | Permitted DC input | Operating temperature |
|---|---|---|---|
| ITP-G804T-8PH24i | 24/48 V DC | 20–57 V DC | −10 to +60 °C |
| ITP-G804T-8PHE24i | 24/48 V DC | 20–57 V DC | −40 to +75 °C |
| ITP-G804T-8PH-WVi | 24/48/72/96/110 V DC | 16–130 V DC | −10 to +60 °C |
| ITP-G804T-8PHE-WVi | 24/48/72/96/110 V DC | 16–130 V DC | −40 to +75 °C |
The 20–57 V DC models are designed for 24 and 48 V onboard supplies. Where a railway vehicle uses a nominal 72, 96 or 110 V supply, the 16–130 V DC input provides the required range. Models with the E designation extend operation from −40 to +75 °C; the other two are specified for −10 to +60 °C. Selection should be based on the actual minimum and maximum input voltage, not only the nominal system voltage.
Gigabit M12 Connectivity with Eight PoE Ports
All four switches provide twelve 10/100/1000Base-T ports through X-coded M12 connectors. Eight ports support PoE according to IEEE 802.3af, IEEE 802.3at and IEEE 802.3bt. They share a total PoE power budget of 60 W, so the combined demand of the connected devices must be considered during system design.
An internal boost stage provides a regulated 53 V DC PoE output and supports power delivery over cable runs of up to 100 metres. Typical powered devices include onboard cameras and wireless access points. As unmanaged devices, the switches can be commissioned without prior configuration.
M12 Power Connection and Railway Certification
The dual redundant DC inputs are galvanically isolated and connected through a five-pin M12 power connector. Reverse polarity protection and overload current protection are included. The IP40 metal enclosure is intended for wall mounting and measures 116.5 × 184.6 × 118 mm (D × W × H).
The ITP-G804T models are certified to EN 50155, EN 50121-4 and EN 45545-2. Shock and vibration testing follows IEC 61373. Each model carries a five-year warranty.
For a model recommendation, IPC2U needs the actual DC input range, minimum and maximum operating temperature, number of PoE devices, combined PoE load and available installation space. Browse our EN 50155 Ethernet switches for railway applications or send us your project requirements.
