Railway DC DC Converter Power Supply 24V Rectifier Module

Our company has developed the TH series intelligent high-frequency switching power supply modules. Adopting active PFC power factor correction plus digital LLC control, the modules feature small size, light weight, high efficiency and high reliability. Equipped with a standard RS‑485 interface, the modules can be easily integrated into automation systems and are suitable for sites with single-phase AC input.

High efficiency: the peak efficiency of the module reaches 94%.
Dimension conforms to the 1/4 module size specification recognized by the Ministry of Railways.
Adopts isolated automatic current sharing; the current imbalance for parallel operation is less than ±3%, enabling stable parallel connection of more than 20 modules.
Built-in RS‑485 interface and digital tube display for a user-friendly human-machine interface.
Supports communication, data display, data calibration, constant current control and fault alarm functions.
Power factor > 0.98.
Two sets of fault contacts are available. The relay is closed under normal module conditions and open upon fault occurrence.
100ms hold-up time upon input power failure.

Railway-grade reliability & compliance
Our 24V rectifier module meets railway standards EN50155 / EN45545-2. It passes vibration, shock, wide temperature (-40℃ ~ +85℃) and EMC tests, built-in multi-protection: over-voltage, over-current, over-temperature, short-circuit protection. Stable output under railway voltage transients and surges.
Customization & flexible engineering support
We support ODM / OEM for voltage trimming, pin definition, mechanical structure, conformal coating and parallel redundant design. Our power electronics team provides pre-sales technical calculation, schematic review and integration guidance for your rolling stock or wayside system.
Strict quality control & traceability
100% full-load aging test before shipment. Each module comes with test report. High MTBF design, low failure rate. All components are automotive/railway grade, with full batch traceability for after-project audit.
Global after-sales & long lifecycle service
Long product availability to match railway project long service cycle. Fast technical response, remote troubleshooting. We offer spare parts supply and on-site service option. Standard warranty with extended warranty available upon request.
Cost & delivery optimization
In-house manufacturing reduces intermediate cost. Standard models have stock for quick delivery. We support small batch sample order and mass production. Compact modular design saves cabinet space and lowers your total system installation & maintenance cost.

Q1: What railway standards does this 24V rectifier module comply with?
A: The module complies with EN50155 (railway electronic equipment) and EN45545-2 fire & smoke standard. It supports wide temperature, vibration, shock and EMC requirements for on-board and trackside railway applications.
Q2: Can the module work under big input voltage fluctuation in railway system?
A: Yes. It adopts wide input design to handle railway voltage transient and surge. Built-in active regulation keeps stable 24V DC output even with large input variation.
Q3: Is OEM / ODM customization available? What can be modified?
A: Customization is supported. We can adjust output voltage, rated power, mechanical housing, connector type, conformal coating, parallel function and communication interface according to your system specification.
Q4: What is your warranty term and MTBF of the 24V rectifier module?
A: Standard warranty is 3 years. MTBF is designed over 65,000 hours under normal operating conditions. Extended warranty can be negotiated for large railway projects.
Q5: Do you provide sample testing before bulk order? What is the lead time?
A: Yes, samples are available for lab and field validation. Standard stock items can be shipped within 3–7 working days. Customized orders depend on specification, normally 3–6 weeks.