1. What is the RIA12 Filter 150W Series used for?

The filter is installed between a railway DC supply and a DC-DC converter or other electronic load. It absorbs high-energy supply surges and transients that could damage downstream equipment. It is a protection filter and does not replace the DC-DC converter.

2. Which input-voltage options are available?

Three versions are available: 24 Vdc model: 14.4–36 Vdc input 48 Vdc model: 28.8–70 Vdc input 110 Vdc model: 43–154 Vdc input This range supports common railway battery voltages and supply variations.

3. What surge voltages can the filter withstand?

The 24 Vdc model supports an 84 Vdc surge, the 48 Vdc model supports 182 Vdc, and the 110 Vdc model supports 385 Vdc. These surge ratings apply for 20 ms under the specified test conditions.

4. Is the filter suitable for harsh railway environments?

Yes. The filter has a die-cast IP66 enclosure, keyed Deutsch connectors and integral chassis-mounting flanges. It operates from −40°C to +70°C and is tested for shock and vibration in accordance with EN 61373:2010 Category 1.

5. Which railway standards does the filter support?

The RIA12 Filter 150W Series is designed to meet RIA12 surge and transient requirements, together with EN 50155 and EN 50121 requirements for railway electronic equipment and EMC. Final compliance should be confirmed at complete-system level.

RIA12 Filter 150W

The RIA12 Filter 150W Series is designed for use ahead of DC-DC converters and electronic loads rated up to 150 W. Separate models cover continuous input ranges of 14.4–36 Vdc, 28.8–70 Vdc and 43–154 Vdc for nominal 24, 48 and 110 Vdc railway supplies. The RIA12 filter absorbs RIA12 supply surges while continuing to power downstream equipment, with efficiency above 95% and built-in reverse-polarity protection. Its die-cast IP66 enclosure, integral mounting flanges, free-air convection cooling and keyed Deutsch connectors support installation in demanding railway and transportation systems. The series is designed to meet RIA12, EN 50155 and EN 50121 requirements.

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Category: Chassis Mount, Chassis Mount, DC-DC Converters, EMC Filters

Brands: Relec Electronics

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RIA12 Filter 150W

The RIA12 Filter 150W Series is a rugged DC surge and transient filter for 24, 48 and 110 Vdc railway power systems. It protects downstream DC-DC converters and electronic equipment while providing reverse-polarity protection and IP66 environmental sealing.