Key Features
1. Robust Power Conversion
Input: 85–264V AC / 18–36V DC (auto-ranging)

Output: 24V DC (±1% regulation), up to 20A continuous

Redundant hot-swappable modules (N+1 configuration)

2. Railway-Specific Safety
EN 50155 certified (railway electronic equipment)

SIL2 compliant (EN 50126/8/9)

Galvanic isolation (3kV input-output)

3. Smart Monitoring & Protection
Real-time voltage/current monitoring

Active PFC (Power Factor Correction) >0.95

Protections: Overvoltage, short-circuit, overtemperature

4. Ruggedized Design
-40°C to +70°C operation (EN 50155 Class TX)

EN 61373 vibration/shock resistant

IP54 enclosure (dust & splash proof)

Technical Specifications
Parameter Specification
Model P127 (P127ALSTOM variant)
Efficiency ≥92% (at full load)
Ripple Noise <1% p-p
MTBF >300,000 hours
Cooling Convection/forced air
Communication RS-485/Modbus RTU (optional)
Applications
✔ Trackside signaling (interlockings, axle counters)
✔ Level crossing power systems
✔ Onboard train control units (TCR, ATP)
✔ ERTMS/ETCS equipment power backup

Benefits
✅ Ultra-Reliable – Redundant design ensures 24/7 operation
✅ Energy Efficient – Low power loss with active PFC
✅ Easy Maintenance – Front-access modules & LED diagnostics
✅ Global Compliance – Meets UIC, IEEE, and regional standards