24V DC DC Converter Rectifier Railway Power Supply Tonhe

Product Introduction
• TH24L75NZ-S is a railway-grade DC-DC rectifier converter module, developed for railway on-board equipment and trackside DC power supply applications.
• Adopts fully digital soft-switching topology, supports wide DC input range and provides stable 24VDC output. Rated power: 7500W.
• Complies with strict railway standards for vibration resistance, wide operating temperature and EMC electromagnetic compatibility.
• Equipped with fully sealed metal housing and thermal silicone potting, featuring dust-proof, moisture-proof and anti-shock performance.
• Supports N+1 redundant parallel operation and RS485 intelligent communication interface, enabling remote monitoring of voltage, current, temperature and fault alarms.
• Built-in comprehensive multi-protection functions to guarantee safe and reliable operation.
• Typical application scenarios: locomotive on-board auxiliary equipment, railway signal systems, trackside communication power supplies and rail monitoring devices.
• Designed to meet railway reliability requirements, suitable for export to railway projects in Southeast Asia, the Middle East, Australia and other overseas markets.

Product Specifications

Service Advantages
• Railway Grade Reliability: Designed in accordance with EN50155 rolling stock electronic equipment standard. Adaptable to harsh on-board conditions with strong vibration and extreme temperature differences. 100% aging test before delivery.
• Customization Support: Customizable output voltage, communication protocol, mounting structure and protection class. Supporting complete power system solution matching.
• Full Export Document Support: Able to provide Commercial Invoice, Packing List, CO, Form E, CE test reports to satisfy customs clearance requirements of Southeast Asia and the Middle East.
• Global After-sales: 2-year warranty; remote fault diagnosis and fast spare parts delivery. Technical manuals, commissioning guidance and on-site technical support available.
• Bulk Shipment Capacity: Stable production capacity from our own factory. Small batch samples and mass orders are acceptable with flexible MOQ.

Export Case
Case: Southeast Asia Railway Trackside Power Project
We supplied TH24L75NZ-S DC-DC rectifier modules for a suburban railway signal power upgrade project in Southeast Asia. The modules were installed in outdoor wayside power cabinets, converting high-voltage DC into stable 24VDC to supply railway signal and monitoring equipment.
Challenge: Wide temperature variation, strong electromagnetic interference and continuous vibration along the railway line.
Solution: Railway-grade anti-vibration design, full potting and EN50121 EMC compliance. N+1 redundant parallel architecture ensures uninterrupted power supply.
Result: Stable continuous operation for more than 3 years with low failure rate. The customer placed repeat orders for Phase 2 & Phase 3 expansion.

FAQ
Q1: What is the main application of TH24L75NZ-S?
A: It is a railway dedicated DC-DC converter, mainly used for railway locomotive auxiliary power, trackside signal power, railway station DC power supply and railway monitoring equipment power supply.
Q2: Can multiple modules work in parallel?
A: Yes. It supports N+1 redundant parallel and automatic current sharing. If one module fails, the remaining modules can keep the system running without power interruption.
Q3: What certificates can you provide for customs clearance?
A: We can offer CE, RoHS, commercial invoice, packing list, certificate of origin, Form E and test reports as required by customers.
Q4: What is the warranty period?
A: 24 months warranty. We provide permanent remote technical support. Damages caused by improper operation are not covered by warranty.
Q5: Can I get a sample for testing before bulk order?
A: Yes, samples are available. Sample lead time is about 7~14 working days. Lead time for bulk orders depends on order quantity.