Schneider Electric RM4UA01F Relay

Schneider Electric RM4UA01F is a Zelio RM4U voltage measurement relay from the Telemecanique/SQ‑D family. It monitors a low‑level voltage input in the 0.05 to 5 V range and operates from a 110 to 130 V AC supply, enabling it to trigger its relay output when the measured voltage crosses a preset threshold. This device is designed for industrial automation and control panels, providing reliable voltage sensing for applications such as fault detection, process monitoring, and interlock logic in machines and building automation systems. As part of Schneider Electric's RM4U voltage measurement relay series, the RM4UA01F integrates with Schneider Electric automation ecosystems to support compact, modular control architectures in panel installations.