Parameter Value Product Range EOCR (Electronic OverCurrent Relay) - I3DM Series Product Type Communication-type, Integral (One-body) Intelligent Motor Protection Relay Product Code / Model EOCR-I3DM-WRDUHZ (also written as EOCRI3DM-WRDUHZ) Current Setting Range Definite Time: 0.5 ~ 80 A (direct through-hole) Inverse Time / Thermal Inverse: 0.5 ~ 32 A (direct) Above ranges require external CTs Control Supply Voltage (Us) 100-240 V AC/DC (85%~110% of rated voltage) - indicated by "U" Supply Frequency 50 / 60 Hz Power Consumption ≤ 3 W (typical) / < 7 VA Measurement Accuracy ±1% (True RMS, 32-bit MCU) - enhanced with "Z" revision code THD Monitoring Total Harmonic Distortion real-time display, adjustable alarm threshold (with "Z" revision) Protection Functions Overcurrent (OC), Undercurrent (UC), Phase Loss (Open Phase), Reverse Phase (Reversal), Locked Rotor/Stall (Sc/JA), Current Unbalance (Ub), Short Circuit (SH - optional) Time Characteristics Definite Time / Inverse Time (1-30 classes) / Thermal Overload Inverse Time Time Settings Overcurrent Trip Delay (O-Time): Definite time: 0.2-30 sec; Inverse time: 1-30 classes Undercurrent Delay (U-Time): OFF, 0.5-30 sec adjustable Start Delay (D-Time): 0-200 sec adjustable Phase Loss Trip Time: OFF, 0.5-5 sec adjustable Reverse Phase Trip Time: Within 0.15 sec Locked Rotor (Running Stall) Delay: 0.2-10 sec adjustable Current Unbalance Trip Time: 1-10 sec adjustable, setting range 10-50% Display 5-digit 7-segment LED (3-phase current values cycle at 5-sec intervals, trip causes, setting parameters); Bar graph (load factor 65%~100%) Communication Modbus RTU / RS-485 (2400 – 38400 bps) Output Contacts OL (Overload): 1 NC + 1 NO (95-96 / 97-98) - D type configuration AL (Alarm): 1 NO (07-08) for pre-alarm/undercurrent Rating: 3 A / 250 V AC (resistive load), Ith 3A Reset Mode Manual (front panel) / Electric (remote) / Automatic (0.5-1200 sec adjustable) / Power-off (0-1 sec) / Communication remote Fault Memory Records last 3 fault causes with corresponding current values Additional Functions Password protection (3-digit), Running time accumulation with alarm, Pre-alarm, Fail-safe mode selectable, Restart limit, Self-diagnosis Wiring Type Through-hole - indicated by "H" in model code Mounting 35 mm DIN rail mounting Dimensions (W x H x D) Through-hole type: 70 mm × 56.3 mm × 108.1 mm Net Weight Through-hole type: 0.355 kg Rated Insulation Voltage (Ui) 600 V AC (UL/CSA), 690 V AC (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 Humidity 30-85% RH (non-condensing) 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 Shock Resistance 15 gn, 11 ms conforming to IEC 60068-2-7 Vibration Resistance Panel mount: 4 gn; DIN rail: 2 gn conforming to IEC 60068-2-6 Standards / Approvals IEC 60947-4-1, IEC 60255-6, UL, CSA, CE, CCC, RoHS Warranty 18 months Short-circuit Protection (Fuse) BY 4 A gG Connection Specifications Control circuit: 1×1～2.5 mm² (flexible), tightening torque 0.8～1.2 N·m Main circuit: 1×2.5～25 mm² (flexible), tightening torque 2.5 N·m