Schneider Electric CC68.5 Motor Overload Relay

Schneider Electric CC68.5 thermal overload unit (melting alloy) is designed for use with Square D CC and S motor starters to protect three‑phase motors in 480 V circuits. This eutectic alloy thermal protection element sits in the overload path of compatible contactors and relies on a solder link that melts when the motor overheats, allowing a ratchet wheel to free and open the control circuit contacts to stop motor current. Rated for up to 600 VAC operation and a 40 °C ambient, CC68.5 targets motor full‑load currents in the 40.1–42.8 A range for 480 V configurations, providing Class 20 trip characteristics as part of Schneider Electric’s thermal overload family. The device is intended to be used with the corresponding CC or S overload relay and NEMA‑style motor starters, helping prevent motor damage due to overload or stall while keeping protection coordination with the rest of the starter assembly. As a purely mechanical protection device, it requires no external power to operate and reacts to motor heat by melting the fuse link, providing a reliable, field‑replaceable solution for motor protection in industrial control panels.