Schneider Electric STBDDI3725 Digital Input Module

The Schneider Electric STBDDI3725 is a 16-channel 24 V DC digital input module for Advantys STB distributed I/O systems, designed to acquire signals from 24 V DC field devices and sensors. It uses IEC Type 3 sink inputs with an operating voltage range of 19.2–30 V DC, and input thresholds of 11–30 V DC for ON and -3 to +5 V DC for OFF, delivering a 2 ms input response time. The module provides 1500 V DC field-to-bus isolation with resistor-limited input protection and reverse polarity protection, and mounts in the Advantys STB I/O Base (STBXBA3000) as an OEM direct replacement, with manufacturer part number STBDDI3725 from Telemecanique (Schneider Electric). It is intended for PLC control panels, automated production lines, packaging machinery, conveyor systems, and other process automation equipment requiring reliable distributed digital input acquisition.