Schneider Electric SA-3 0-120 Vac-Dc Input Module

Schneider Electric's Square D SA-3 0-120 VAC/DC Input Module is a 16-channel digital input board designed for Square D Class 8881 programmable controllers. It accepts 0–120 VAC/DC discrete field signals from devices such as push buttons, selector switches, limit switches, and relay contacts, enabling reliable PLC input processing for factory automation, machine control panels, and process control systems. Mounted in a PLC rack, this I/O card provides 16 digital inputs that feed PLC logic for real-time monitoring and control, with a 0–120 VAC/DC input range that supports a wide variety of field devices while maintaining compatibility with Square D Class 8881 controllers. Maintenance technicians, OEMs, and system integrators use this module for PLC repairs, control system upgrades, and replacement of defective I/O modules in industrial automation, conveyors, packaging equipment, and material handling machinery. Common replacements within the Square D 8881 family include SA-1, SA-2, and SA-5.