Ansaldo N16661203 Power Supply Module MicroLok II

The Ansaldo N16661203 MicroLok II Power Supply Module is the dedicated backplane power board for the MicroLok II interlocking system, delivering the +5 V, +12 V, and -12 V rails plus an isolated output to power the CPU, cardfiles, and I/O modules within a Microlok II installation. It accepts a DC input from 9.8 V to 32 V (auto-off below 9.8 V; minimum about 11.5 V to turn on), enabling operation from typical field power sources while preserving safe startup margins. The module provides a 12 V isolated output for external devices (12 V at 20 mA) and incorporates protection through on-board fuses (F1, F2, F3) on the power rails. Connections to the MicroLok II backplane are via a 96-pin lower connector (J2) and related interface headers, with the board designed to support the system’s vital/non-vital power distribution and VCOR-powered distribution across the supported rails.