Eaton C440 relay Reliable and accurate intelligence Eaton’s line of C440 electronic overload relays
Increased flexibility, enhanced protection Motor failure has the potential to cause production downtime, costly repair bills and numerous safety concerns for plant personnel. For these reasons, motor protection should be a key element in protecting your organization’s most valuable assets. Selecting accurate and reliable motor overload protection is the best way to manage your costs and maintain system integrity.
Flexible design The electronic design of Eaton’s C440 electronic overload relay delivers enhanced motor protection based on the ability to directly monitor motor current in each phase. Thermal modeling is performed electronically with precision solid-state components. The electronics accurately identify excessive current or phase loss and react to the condition with greater speed, reliability and repeatability than a traditional electromechanical device.
Is Continuously Overheated Enhanced protection and monitoring • Faster response time under phase loss and phase unbalance conditions • Increased motor life due to thermal modeling design • Common design for single-phase and three-phase applications 50 Phase Loss Trip Times Under Full Load Current Conditions 45 Approximate Trip Time in Seconds The superiority of electronic overload relays versus traditional thermal overload relays 40 35 30 25 20 15 10 5 0 C440 Electronic Overload Relay Traditional The
Communications capabilities The C440 and XT electronic overload relays provide two levels of communications capabilities—monitoring only, and monitoring and control—to allow easy integration into existing plant management systems.
Versatile design for global applications 6 EATON Eaton C440 relay
Eaton’s motor protection offering XTOB, XTOT C306 C440, XTOE C441 Motor InsightE General Features Relay type Thermal bi-metal (fixed) Electronic Electronic FLA range FLA maximum:minimum ratio Trip class Reset type 0.1–630A 1.5:1 10 or 30 Selectable manual/automatic Thermal bi-metal (adjustable heaters) 0.25–1368A 3:1 10 or 20 Selectable manual/automatic 0.
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