Eaton C4410109NOUI Motor Protection Relay

Product Type: Motor Protection & Monitoring Relay
Model: C4410109NOUI
Series: C441 Motor Insight
Manufacturer: Eaton

Model clarification: The C4410109NOUI is technically a Motor Insight overload/protection relay, rather than a simple “Motor Protection Module.” Eaton specifies 120 V AC control power and a 1–9 A motor current range for this model.

Technical Specifications

Parameter	Specification
Model	C4410109NOUI
Product Type	Motor Protection / Overload Relay
Series	C441 Motor Insight
Control Power	120 V AC
Control Voltage Range	93.5–132 V AC
Motor Voltage Monitoring	170–660 V AC
Motor Current Range	1–9 A
Trip Class	Selectable 5–30
User Interface	NOUI – Without Internal User Interface
Protection Functions	Thermal overload, phase loss, phase reversal, current/voltage imbalance, ground fault
Pump/Load Protection	Undercurrent, low power, high power
Monitoring	Current, voltage, power, power factor, frequency, thermal capacity
Communication	Optional communication modules available
Dimensions	Approx. 3.94 × 4.92 × 3.94 in
Weight	Approx. 2.5 lb
Certifications	UL Listed, CSA Certified, CE, RoHS

Eaton specifies the C4410109NOUI for 120 V AC control power, with a 1–9 A FLA range; external CTs can extend the monitored motor range up to 540 A.

Advantages & Features

Advanced Motor Protection — Protects against overload, jam/stall, phase loss and phase reversal.
Current Monitoring — Monitors individual phase and average RMS current.
Voltage Monitoring — Detects undervoltage, overvoltage and voltage imbalance.
Ground-Fault Protection — Provides residual ground-fault current monitoring.
Pump Protection — Supports undercurrent, low-power and high-power protection.
Adjustable Trip Class — Trip class can be selected from 5–30.
Power & Energy Monitoring — Can calculate motor power, power factor and energy-related operating information.
Expandable Communications — C441 systems support optional Modbus, DeviceNet, PROFIBUS and Ethernet-based communication modules.
NOUI Configuration — Designed without the internal user interface, useful for applications using external communication or control interfaces.