Railway 500W DC/DC Converters with Wide Input Range

The CLS-500 is a railway 500W DC/DC converters designed for train systems that require maximum reliability and performance. It features a wide input range of 50.4…137.5 Vdc (3:1) allowing a single unit to cover both 72 V and 110 V battery profiles in accordance with EN50155.

It provides an isolated and regulated 24 Vdc output, with 10% peak power capability for dynamic loads and a typical efficiency of 95%. The converter includes reinforced insulation up to 5 kVdc, ensuring safe operation even under demanding electrical conditions.

Thanks to its baseplate and robust thermal design, the CLS-500 enables derating-free operation up to +70 ºC and withstands +85 ºC for up to 15 minutes, meeting OT4 + ST1/ST2 classification. This ensures stable performance even under severe temperature variations.

The unit includes active reverse polarity protection, inrush current limitation, remote on/off, a DC-OK relay, and parallel or redundant operation capability, providing flexible and secure integration into multiple power architectures.

The CLS-500 complies with the main railway standards: EN50155, EN45545-2, and EN50121-3-2, ensuring reliable operation in environments with vibration, humidity, and the electrical conditions typical of rolling stock.

KEY FEATURES:

• Wide input voltage range: 4…137.5 Vdc.
• Full power from –40 ºC to +85 ºC without heat sink (OT4 + ST1 & ST2 applications).
• Adjustable output (19.2–25.2 VDC) for long cable runs or battery charging.
• 10 ms hold-up time.
• Remote ON/OFF control.
• Integrated OR-ing diode (parallel or redundant operations).
• 10% peak power capability for 10 s.
• EN50155 compliant with no external circuitry required.
• 2 years warranty