GE NEMA Manual Motor Starter

These non-reversing NEMA manual motor starters with thermal overloads have enclosures that protect their internal components from impacts, debris, and dust. Non-reversing motor starters connect and disconnect power to motors and other high-current equipment and machinery in a single direction. Thermal overload relays, also known as heaters, prompt motor starters to break electrical connections with downstream equipment once a set temperature is reached. They are made of either bimetallic strips or solder-type materials and change shape as electrical current increases and temperatures rise. As the material changes shape, it opens and closes contacts that signal motor starters to disconnect power and prevent connected loads from overheating and causing damage.