Parameter Value Product Range EOCR (Electronic OverCurrent Relay) - i3DM Series Product Type Communication-type, Integral (One-body) Electronic Motor Protection Relay Product Code / Model EOCR-i3DM-WRDBWZ (also written as EOCRI3DM-WRDBWZ) Current Setting Range 0.5 ~ 80 A (definite time, direct) 0.5 ~ 30 A (inverse time, direct) Above ranges require external CTs Control Supply Voltage (Us) 24 V AC/DC (85%~110% of rated voltage) Supply Frequency 50 / 60 Hz Power Consumption Less than 3 W Measurement Accuracy ±1% (enhanced with "Z" revision code) Protection Functions Overcurrent (OC), Undercurrent (UC), Phase Loss (Open Phase), Reverse Phase (Reversal), Locked Rotor (Stall), Current Unbalance, Pre-alarm Time Characteristics Definite Time / Inverse Time (1-30 classes) / Thermal Overload Inverse Time Time Settings Start Delay (D-Time): 0-200 seconds Trip Delay (O-Time): Definite time: 0.2-30 seconds; Inverse time: 1-30 classes Undercurrent Delay: OFF, 1-10 seconds adjustable Phase Loss Trip Time: OFF, 0.5-5 seconds adjustable Locked Rotor Delay: 0.3-5 seconds adjustable Reverse Phase Trip Time: Within 0.15 seconds Current Unbalance Trip Time: 1-10 seconds adjustable Display 7-segment LED (3-phase current values, trip causes, setting parameters) + Bar graph (load factor 65%~100%) Communication Modbus RTU / RS-485 Output Contacts OL (Trip): 1 NC + 1 NO (1a1b) AL (Alarm): 1 NO Rating: 3 A / 250 V AC (resistive load) Reset Mode Manual (front panel) / Electric (remote) / Automatic (0.5 sec - 20 min adjustable) Fault Memory Records last 3 fault causes with corresponding current values Wiring Type Window-type (through-hole) - indicated by "W" in model code Mounting 35 mm DIN Rail or Panel mounting Dimensions (W x H x D) Window type: 70 mm × 74.5 mm × 83.8 mm Net Weight Window type: 0.315 kg Rated Insulation Voltage (Ui) 600 V AC conforming to UL/CSA/IEC 60947-4-1 Rated Impulse Withstand Voltage (Uimp) 6 kV conforming to IEC 60947-4-1 Operating Temperature -20 °C to +60 °C Storage Temperature -40 °C to +85 °C IP Degree of Protection IP20 (enclosure) conforming to IEC 60529 Dielectric Strength 2 kV, 50/60 Hz, 1 minute (case to circuits) conforming to IEC 60255-5 Standards / Approvals IEC 60947-4-1, UL, CSA, CE Warranty 18 months Short-circuit Protection 4 A gG fuse