Cincinnati Milacron 3-531-3957A Thermocouple Interface Module

The Cincinnati Milacron 3-531-3957A Thermocouple Interface Module is a six-channel interface card designed to bring thermocouple signals into a Cincinnati Milacron control system, conditioning and routing temperature data to the host PLC/CNC controller for real-time monitoring and closed-loop control. Verified in multiple listings as Rev C and Rev D variants, this module sits in the manufacturer’s thermocouple interface family and is documented in surplus catalogs under the 3-531-3957A part number. Although Cincinnati Milacron has discontinued the model, third-party distributors continue to offer stock, with Radwell listing it as discontinued by the manufacturer but in stock and other catalogs referencing Rev C or Rev D revisions. Common applications include multi-point temperature sensing in industrial automation, CNC machinery temperature monitoring, and process-control loops where simultaneous readings from several thermocouples must be conditioned and presented to the control system. The device label and catalog entries identify it specifically as a thermocouple interface module, separating sensor inputs from control logic and enabling reliable temperature feedback in complex manufacturing environments.