Non-Stop to Market Success:
Power Solutions for Mobility.

Modern display systems in the driver's cab require specific voltages for various on-board power systems—typically ranging from 14.4 to 154 VDC. Exista supplies suitable DC/DC converters that cover all common input voltages and are designed to comply with EN 50155. Thanks to their exceptionally slim design, the converters can be integrated directly behind high-resolution displays.

The fanless solutions dissipate heat loss directly to the housing via gap pads or custom cooling surfaces. This reduces moving parts, increases robustness, and significantly improves the Mean Time Between Failures (MTBF). As a result, display systems remain stable in operation even under shock, vibration, and high temperature fluctuations.

Reliable and interference-resistant power supplies are essential for embedded PCs, control units, and I/O units on trains or along the tracks. Exista offers DC/DC converters and AC/DC power supplies specifically designed for harsh railway and outdoor environments. High EMC requirements, transient-loaded on-board power systems, and limited space are taken into account as early as the concept phase.

Through close collaboration with your development and EMC teams, we optimize layout, filtering, and grounding concepts. Coated PCBs, potted modules, and mechanically secured components increase resistance to moisture, dirt, shock, and vibration—ensuring reliable control systems throughout the entire lifespan of your systems.

Today, passengers expect 230-volt outlets to be available throughout the entire train. Exista develops and manufactures inverters that reliably convert on-board voltages—such as 24, 36, 72, or 110 VDC—into a stable 230 VAC. The devices are designed for installation on the roof, inside the passenger compartment, or under the floor, incorporating various cooling and protection concepts.

Robust mechanics, a wide temperature range, and optimized EMC filters ensure that inverters operate reliably even under extreme conditions. This ensures that passengers can charge their devices at any time without affecting the onboard power supply or other systems.

When it comes to railroad crossings, train control systems, and braking and control applications, there can be no compromises on safety. Exista understands the requirements for power supplies in safety-critical systems, up to SIL 2 and SIL 4. Even before the actual development phase begins, processes, documentation, and tests are aligned with the required safety level.

Working closely with you, we define interfaces, diagnostic functions, redundancy concepts, and monitoring mechanisms. The goal is a power supply that integrates seamlessly into your safety concept and provides transparent support for testing and certification processes—ensuring maximum operational safety on the tracks.

Signal technology, point machines, and communication and radio systems along the track are often exposed to extreme weather conditions. Exista supplies power supplies designed for outdoor installation that can reliably withstand moisture, dust, temperature fluctuations, and power surges caused by lightning or switching operations. Protective coatings, optimized filter stages, and mechanical reinforcements are standard features.

Thanks to modular designs, solutions can be scaled for different power classes and voltage ranges. This simplifies spare parts inventory management and reduces service times, as uniform platforms can be used in various applications.

Condition monitoring systems, telematics, and data logger applications often require compact, high-availability power supplies with a particular focus on EMC and energy efficiency. Exista develops DC/DC converters and AC/DC solutions that reliably power sensors, communication, and data processing—even when vehicle electrical system voltages fluctuate significantly.

Optional monitoring and signal outputs enable condition diagnostics of the power supply and facilitate integration into higher-level monitoring systems. This lays the foundation for predictive maintenance and high availability of your fleet.

EN 50155 defines the requirements for electronic equipment in rail vehicles, particularly with regard to temperature range, shock, vibration, humidity, and power interruptions. For power supplies, this means they must reliably withstand fluctuations in the on-board power supply, transients, and undervoltage conditions. EN 50155-compliant solutions increase reliability in daily operation and simplify the certification process for the entire system.

In addition to standards such as EN 50155 and EN 50121-3-2 (EMC), power supplies used in railway and transportation applications must meet high shock and vibration resistance, extended temperature ranges, and fire safety requirements in accordance with EN 45545. In addition, ultra-wide input voltage ranges, galvanic isolation, fanless cooling, and high MTBF values are often required. Depending on the application, additional requirements such as SIL levels, redundancy, or diagnostic functions may also apply.

Specialized railway power supplies are required wherever equipment is connected directly to the onboard power systems of trains, trams, or other rail vehicles—such as for displays, passenger information systems, embedded PCs, control systems, inverters, or signaling equipment. Wayside-installed systems such as railroad crossings, point machines, or radio systems also require robust, standards-compliant solutions. Standard industrial power supplies are generally insufficient here, as environmental influences and certification requirements are significantly more stringent.