Parameter Value Product Range EOCR (Electronic OverCurrent Relay) - PMZ Series Product Type Multifunctional Intelligent Motor Protection Relay Product Code / Model EOCR-PMZ-WRDUH (also written as EOCRPMZ-WRDUH) Current Setting Range 0.5 ~ 100 A (definite time, direct through-hole) 0.5 ~ 60 A (inverse time/thermal inverse, direct) Above ranges require external CTs (up to 6000A) Ground Current Setting Range 0.03 ~ 10 A (adjustable) Short Circuit Setting Range 2 ~ 50 × OC (up to 500A) Control Supply Voltage (Us) 100-240 V AC/DC (85%~110% of rated voltage) Supply Frequency 50 / 60 Hz Power Consumption < 7 VA Measurement Accuracy ±1% (True RMS measurement) Protection Functions Overcurrent (OC), Undercurrent (UC), Phase Loss (Open Phase), Reverse Phase (Reversal), Locked Rotor (Stall), Current Unbalance, Ground Fault (Leakage), Short Circuit, Pre-alarm Time Characteristics Definite Time / Inverse Time (1-30 classes) / Thermal Overload Inverse Time Time Settings Overcurrent Trip Delay: Definite time: 0.2-30 seconds; Inverse time: 1-30 classes Undercurrent Delay: OFF, 0.2-30 seconds adjustable Phase Loss Trip Time: Within 3 seconds Reverse Phase Trip Time: Within 0.1-0.3 seconds Locked Rotor Delay: 0.1-10 seconds adjustable Current Unbalance Trip Time: Within 8 seconds Ground Fault Delay: 0.05, 0.1-10 seconds adjustable Short Circuit Delay: 0-20 seconds adjustable Display 7-segment LED (3-phase current values, ground leakage current, trip causes, setting parameters) cycles at 5-second intervals; Bar graph (load factor 65%~100%) Communication Modbus RTU / RS-485 (up to 200 nodes) Analog Outputs Dual 4-20 mA (isolated) Output Contacts OL (Overload): 1 NC + 1 NO (95-96 / 97-98) GR (Ground): 1 NO (57-58) SH (Short): 1 NO Contact Rating 3 A / 250 V AC (resistive load) Reset Mode Manual (front panel) / Electric (remote) / Automatic (adjustable) / Power-off Fault Memory Records last 3 fault causes with corresponding current values; fault waveform recording available Additional Functions THD (Total Harmonic Distortion) measurement, RTC clock for fault time stamping, Temperature and humidity measurement, Digital low-pass filter, Running time accumulation Wiring Type Through-hole (贯穿型) - indicated by "H" in model code Mounting 35 mm DIN Rail or Panel mounting Dimensions (W x H x D) 90.3 mm × 55 mm × 126.5 mm Net Weight 0.425 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