Cutler Hammer-Eaton C440A1A005SDD Electronic Overload Relay 3PH 50-60Hz

The Cutler Hammer Eaton C440A1A005SDD Electronic Overload Relay that is suitable for three-phase systems with 50/60 Hz frequency. This part serves a protection function for motors from being overloaded while in HVAC systems. The relay works by continuously measuring the current passing through the motor and whether this current is above set values, the relay then open to cut power in case there is a high current surge which can cause heating of the windings. Some advantages of the advanced electronic design include accurate detection of the current, phase loss protection, and adjustable tripping current making it superior to the thermal overload relays. Also, it can accumulate data for maintenance.