Eaton Cutler-Hammer C321KM30 Mechanical Interlock 322838-753 ensuring the hydronic heating system

ensuring the hydronic heating system operates within the manufacturer's specified thermal parameters without nuisance lockouts

Industrial-Grade Materials: Stainless steel construction protects against corrosion and fatigue in extreme temperature and high-humidity applications

Simplified Installation: Features a snap-on clip mechanism that securely grips shaft grooves for a non-slip connection

and control boards from voltage fluctuations

Eaton Cutler-Hammer C321KM30 Mechanical Interlock 322838-753 ensuring the hydronic heating systemThe Eaton Cutler Hammer C321KM30 Mechanical Interlock is a critical field installable accessory designed for Freedom Series NEMA size 00, 0, 1, and 2 starters and contactors. Engineered for horizontal mounting configurations, this heavy duty mechanical link ensures positive electrical isolation by preventing two opposing contactors from closing simultaneously. This hardware is essential for reversing motor applications and multi source power transfers