Technical Parameters Basic Information Brand: ALSTOM / Converteam Part Number: PRS12N04TH Form Factor: Standard 3U slide-in rack pluggable low-voltage power module Matching peripheral boards: MVTU/MVTT traction master CPU, MCND series IGBT gate drive boards, MCGV/MCGG analog sampling boards, MCAA/TRVC/P127 TCMS communication boards, MMLB/MMLG digital I/O expansion boards Application: European urban metro & light rail traction converter, backup & steady-state low-voltage logic power supply for all control plug-in boards Input Power Specifications Input rated voltage: DC 110V vehicle auxiliary battery power Wide operating input range: DC 77V ~ 137.5V Rated input power: 120 W Input protection: Overvoltage cut-off, undervoltage lockout, reverse polarity protection, TVS surge absorption, input fuse Stabilized Isolated Output Channels DC24V / 4.0A Standard working power for digital I/O boards, relay loops, signal conditioning circuits ±15V / 1.8A Precision power for analog sampling, temperature signal acquisition circuits ±5V / 3.0A Core logic power for DSP master CPU, backplane communication chips, fault memory All outputs isolated from DC110V input; each channel independent hardware protection Per-channel protection: Overcurrent limiting, short-circuit auto latch-off, over-temperature shutdown, auto-recovery after fault removal Mechanical Specifications Overall dimension: H130 mm × W98 mm × D220 mm PCB protection: Full acrylic conformal coating, anti-moisture, anti-corrosion, anti-dust, anti-mold Front panel LED indicators: Input Power OK, 24V Output Normal, ±15V Output Normal, ±5V Output Fault, Overheat Alarm Fastening structure: Anti-looseness lock buckle, stable contact under long-term vehicle vibration and impact Railway Environmental & EU EN Compliance Operating ambient temperature: -25 ℃ ~ +70 ℃ Storage & transport temperature: -40 ℃ ~ +85 ℃ Relative humidity: 5% ~ 95% non-condensing Vibration test standard: IEC 61373 railway rolling stock Shock resistance: 12g half-sine wave impact test EMC standard: EN 50121-3-2 railway vehicle electromagnetic compatibility Fire safety grade: EN 45545-2 HL2 low smoke, low toxicity flame retardant material