Schneider Electric 78050AT0-1R Thermal Overload Relay

Schneider Electric's Square D 78050AT0-1R Thermal Overload Relay is a Class 9065 motor-protection device designed to guard motors from overload in control circuits. The part number 78050 and the model designation AT0-1R identify it as part of Schneider Electric's 9065 thermal overload relay family, a legacy line built for durable, thermally operated motor protection. This relay protects by monitoring the heat generated by motor current and will trip when the preset limit is exceeded, helping prevent motor damage and unplanned downtime. It is intended to be used as part of a complete motor-control assembly alongside compatible Square D contactors, enabling reliable overload protection within panel installations. Within the 9065 family, these relays emphasize robust construction and straightforward integration into standard control schemas, offering a compact form factor suitable for industrial environments and consistent protection across motor-driven systems within the Square D ecosystem.