Schneider Electric 140DAI55300C Programmable Logic Controller Module

Schneider Electric’s 140DAI55300C is a Modicon Quantum discrete input module that provides 32 digital input channels for 115 V AC signals, configured as four banks of eight inputs to fit the backplane addressing used in Quantum I/O architectures. This coated version of the module, part of the Modicon Quantum family, is designed to monitor field devices such as pushbuttons, limit switches, and proximity sensors in industrial automation, interfacing with compatible 115 VAC devices and the Quantum controller ecosystem. The model is listed as discontinued from commercialization as of August 8, 2025, with end-of-service planned for December 31, 2029; Schneider Electric notes BMXDAI1604H as a recommended replacement for many applications, including a 16-input X80 option for environments requiring different packaging, or an equivalent 16-input replacement when appropriate. This module is commonly used in factory automation and process lines where robust 115 VAC discrete inputs are required, enabling reliable status monitoring and control within a Modicon Quantum system.