Parameter Value Product Range EOCR (Electronic OverCurrent Relay) - FE420 Series Product Type Split-body Intelligent Motor Protection Relay Product Code / Model EOCR-FE420 (Series) Protection Functions Overcurrent (OC), Undercurrent (UC), Phase Loss (Open Phase), Reverse Phase (Reversal), Locked Rotor (Stall), Current Unbalance Current Setting Ranges 05 type: 0.5 ~ 7 A (direct) 80 type: 5 ~ 80 A (direct) With external CTs: Up to 800-960 A Control Supply Voltage (Us) 100-240 V AC/DC (U type) Supply Frequency 50 / 60 Hz Power Consumption ≤ 5 W Measurement Accuracy ±1% (True RMS measurement) Analog Output 4-20 mA (isolated, current transmitter function) Time Characteristics Definite Time / Inverse Time (1-30 classes) Time Settings Overcurrent Trip Delay (O-Time): Definite time: 0.2-30 sec; Inverse time: 1-30 classes Undercurrent Delay (U-Time): 0.5-30 sec Start Delay (D-Time): 0-200 sec Phase Loss Trip Time: Within 3 sec Reverse Phase Trip Time: 0.1-0.3 sec Current Unbalance Trip Time: Within 8 sec Display 7-segment LED (3-phase current values, trip causes) cycles at 5-second intervals; Bar graph (load factor) Output Contacts OL (Overload): 1 NC + 1 NO (95-96 / 97-98) AL (Alarm): 1 NO Rating: 3A / 250V AC (resistive load) Reset Mode Manual (front panel) / Electric (remote) / Automatic Fault Memory Records last 3 fault causes with corresponding current values Additional Functions Motor operating time recording, Pre-alarm, Self-diagnosis, Fail-safe mode (FS) selectable Wiring Types H type: Through-hole (window-type) T type: Terminal type Mounting 35 mm DIN rail or Panel mounting Dimensions (W x H x D) Through-hole type: 70 mm × 56.3 mm × 106 mm Terminal type: 70 mm × 91.3 mm × 106 mm Net Weight Through-hole type: 0.47 kg Terminal type: 0.64 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 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, IEC 60255-6, UL, CSA, CE, CCC, RoHS Warranty 18 months