M57121021001C is railway EN standard 3U plug-in signal acquisition and interlock board for Alstom metro and light rail traction converter racks. It collects high-precision current, DC-link voltage, power module/motor temperature 4–20mA analog signals, processes safety chain digital interlock signals, transmits filtered sampled data to EP3-E-4-EN / EPIC-III master traction CPU via rack proprietary backplane bus.

KVFG14201L51AEH is EU EN certified railway-grade 3U plug-in gate drive control board for Alstom metro & light rail traction converter racks. It provides galvanically isolated PWM trigger pulses for high-power traction IGBT stacks, real-time monitors power module temperature, DC-link voltage, phase current and all hardware faults, exchanges operational data with EP3-E-4-EN / EPIC-III master traction CPU via rack proprietary backplane bus.

MCAA11J1BP9010C is EN standard railway-grade 3U plug-in digital input/output and vehicle bus communication board for Alstom European metro/light rail traction racks. It handles vehicle-level digital interlock signals, traction system status feedback, fault remote reporting, and realizes data exchange between traction CPU and vehicle TCMS via dedicated train communication bus.

MCTI40N1AF07S1C is EU EN certified railway-grade 3U plug-in TCMS communication and digital logic I/O board for Alstom European metro & light rail traction converter racks. It serves as the data gateway between traction master CPU (EP3/EPIC-III) and vehicle train control management system, processes all high-voltage safety interlock signals, traction/brake command transmission and fault status upload.

6001-787-050 is a railway standard 3U slide-in plug-in signal interface board for Alstom metro & light rail traction converter racks.

762084 A62-319 is railway certified 3U slide-in plug-in signal conditioning board for Alstom metro and light rail traction converter racks. It collects galvanically isolated DC-link voltage, inverter phase current and multi-channel 4–20mA temperature sensor signals, processes high-voltage safety chain digital interlock signals, and communicates real-time sampled data to EP3 / EPIC-III traction master CPU via proprietary rack backplane bus.

KCEG14201N51EEE is EU EN standard railway-grade 3U plug-in gate drive control board for Alstom European metro and light rail traction converter racks. It outputs isolated high-speed PWM trigger pulses to high-power traction IGBT modules, collects power unit temperature, DC-link voltage, phase current and multi-type hardware fault signals, and exchanges real-time operating data & fault logs with EP3-E-4-EN / EPIC-III master traction CPU via proprietary rack backplane bus.

KBCH12001P15MEL is railway EN compliant 3U plug-in high voltage auxiliary power board for Alstom metro and light rail traction converter racks. It converts wide-range traction DC-link high voltage into multiple galvanically isolated low-voltage power rails for EP3/EPIC traction master CPU, IGBT gate drive PCBs, analog signal sampling boards and RIOM remote I/O modules.

ALSTOM 57721819 is railway certified 3U plug-in signal processing & safety interlock board for Alstom metro and light rail traction converter racks, EU EN compliant rolling stock version. It integrates multi-channel isolated analog sampling, high-voltage safety chain digital IO and rack backplane communication, collecting DC-link voltage, phase current, power module temperature signals and processing vehicle safety interlock logic, exchanging real-time operational data and fault codes with EP3/EPIC master traction CPU.

P/N 55999-943-01 is EN certified railway-grade 3U plug-in gateway board for Alstom metro & light rail traction racks. It acts as bidirectional data bridge between EP3/EPIC traction master controller and vehicle TCMS (Train Control & Management System), integrates opto-isolated digital safety interlock I/O, fault log storage and internal rack backplane communication.