Key Specifications Parameter Value Brand Schneider Electric / nVent (formerly Samwha EOCR) Series EOCR-MME (MMEB model) Product Type Multifunctional Motor Protection Relay with Control Functions Model / Reference MMEB-WRUH Protection Functions • Overcurrent (Overload) • Undercurrent (Underload) • Phase Loss / Open Phase • Phase Reversal (Reverse Phase) • Phase Unbalance / Imbalance (10...50%) • Locked Rotor (Stall) at Start: 2...8 times OC setting • Locked Rotor (Stall) at Run: 1.5...5 times OC setting • Earth Fault (Ground Fault): 0.03...10A Current Measurement Integrated CTs (window type) Current Setting Range 0.5...100 A (wide range) Control Voltage (Us) 100...240 V AC/DC (wide range) Frequency 50...60 Hz (power circuit) 5...200 Hz (VFD applications) Communication Modbus RTU protocol, RS-485 interface Time Delay Settings • D-Time (Start delay): 0...200 s • E-Time (Earth fault): 0.1...10 s • Ed-Time: 1...30 s, off • O-Time (Overcurrent): 1...30 class (inverse/thermal) or 0.2...120 s (definite) • U-Time (Undercurrent): 0.5...120 s Output Contacts • O1: 1 NO (OL/UL output) • O2: 1 NO (Logic output) • O3: 1 NO (Selectable GR/AL output) • Contact Rating: 250V, 3A Reset Modes • Manual reset • Automatic reset: 0.5...1200 s • Electrical reset: 0...1 s by power interruption Display / Indication • 7-segment LED display • 4 LED indicators • Bar graph display • Current amplitude bar Mounting Base unit: 35 mm DIN rail or panel mount Display unit: Flush mounting Control Functions • Local/remote control selectable • Multiple starting modes: DOL, Star-Delta, Reversing, Inverter • Control via buttons, panel, auto, or communication bus Special Features • Records last 3 faults (cause, current values, time) • Date and time setting • Restart limit function • Total running time display • Phase/Neutral load protection selectable • PC parameter setting via PCON software • Separate display up to 150m Standards IEC 60947-4-1, UL, CSA Rated Operational Voltage (Ue) • 600 V AC (UL) • 690 V AC (CSA, IEC 60947-4-1) Rated Insulation Voltage (Ui) 600 V AC (UL/CSA) / 690 V AC (IEC) Rated Impulse Withstand Voltage (Uimp) 6 kV Degree of Protection IP20 Operating Temperature -20...60 °C Storage Temperature -30...80 °C Power Consumption 3 W Dimensions (W x H x D) 70 mm × 56.3 mm × 108.1 mm Weight 0.32 kg Terminal Wiring Control circuit: 1...2.5 mm² flexible Tightening torque: 0.8...1.2 N·m Shock Resistance 15 gn for 11 ms Vibration Resistance 4 gn (panel mount) / 2 gn (DIN rail)