Brochure
Eaton’s motor protection offering
XTOB, XTOT C306 C440, XTOE C441 Motor InsightE
General Features
Relay type Thermal bi-metal (fixed) Thermal bi-metal
(adjustable heaters)
Electronic Electronic
FLA range 0.1–630A 0.25–1368A 0.3–1500A 1–540A
FLA maximum:minimum ratio 1.5:1 3:1 5:1 18:1 and 9:1
Trip class 10 or 30 10 or 20 Selectable 10A/10/20/30 5–30, stepped by 1s
Reset type Selectable manual/automatic Selectable manual/automatic Selectable manual/
automatic/remote
Selectable manual/
automatic/remote
Mounting
Direct connect to contactor XT IEC, DP NEMA, DP XT IEC, Freedom NEMA, DP —
Standalone mounting Panel or DIN Panel or DIN Panel or DIN Panel
Protection
Thermal overload protection Yes Yes Yes Yes, programmable
Phase loss (single-phasing) Yes Yes Yes, 10 seconds Yes, programmable
Current unbalance protection — — Yes, 10 seconds Yes, programmable
Ground fault — — Yes, 50% of FLA dial Yes, programmable
Jam — — — Yes, programmable
Phase reversal — — — Yes, programmable
Undercurrent/overcurrent — — — Yes, programmable
Low/high power — — — Yes, programmable
Overvoltage/undervoltage — — — Yes, programmable
Voltage unbalance — — — Yes, programmable
Monitoring
Current per phase and average rms — — Yes Yes
Current unbalance percent — — Yes Yes
Ground fault current — — Yes Yes
Thermal capacity — — Yes Yes
Voltage per phase and average rms — — — Yes
Voltage unbalance percent — — — Yes
Power — — — Yes
Power factor — — — Yes
Frequency — — Yes Yes
Motor run hours — — — Yes
Motor starts count — — — Yes
Time to restart after fault — — — Yes
Overload status — — Yes Yes
Advanced Features
Programmable reset/backspin timers — — — Yes
Programmable reset attempts — — — Yes
Programmable trip delays — — — Yes
Programmable alarming contact — — — Yes (optional)
Programmable start time — — — Yes
Communications with I/O — — Yes (Modbus, DeviceNet, PROFIBUS,
Modbus TCP, EtherNet/IP)
Yes (Modbus, DeviceNet, PROFIBUS,
Modbus TCP, EtherNet/IP)
Remote display — — — Yes (NEMA 1, 12 and 3R)
Lockable user interface or tamper proof — — Yes Yes
Alarm-no-trip mode — — — Yes, for GF and line faults
Diagnostics — — Yes Yes, 10 fault queue
7EATON Eaton C440 relay