Mitsubishi Electric A1SY10 Relay Output Module

The Mitsubishi Electric A1SY10 is a digital relay output module for the MELSEC-A PLC platform, delivering 16 relay outputs that switch external devices such as relays, solenoids, and contactors from the CPU in industrial automation systems. It supports a rated load voltage of 240 VAC or 24 VDC and provides up to 2 A per point, with a 16-point (common grouped) output configuration. Mounted in a rack on the A-series base unit and wired via a terminal-block connection, it is commonly used in control panels and production lines for system expansion, output control, and replacement of legacy I/O modules. This module is discontinued/legacy, with common replacements including Mitsubishi A1SY41P, A1SY81, and QY41P (Q-series upgrade).