Key Specifications Parameter Value Brand nVent / Schneider Electric (Samwha EOCR legacy) Series EUCR Product Type Electronic Undercurrent (Underload) Protection Relay Model / Reference EUCR-30RBMQ Application Three-phase Motor Underload Protection (Pumps, Conveyors, Mixers, etc.) Current Setting Range 30 type: 3 - 30 A (adjustable) Current Measurement Via two integrated current transformers (2-CT method) Control Voltage Dependent on specific variant (typically 24VAC/DC, 110VAC, or 220VAC - check model suffix) Frequency 50/60 Hz Protection Functions • Undercurrent (Underload / No-load / Dry-run protection) Trip Time (Undercurrent) U-TIME: Adjustable (typically 0.2 - 30 seconds) Time-Current Characteristic Definite time (定时限) Output Contacts 1 x SPDT (1 C/O - Changeover contact) Contact Rating: 3A / 250VAC resistive Reset Mode Manual (Instant) / Electric (Remote) selectable Mounting 35mm DIN Rail / Panel mount Case Design Compact,密集型设计, with integrated CTs Display / Indication LED indicators for power ON and trip status Standards Compliant with relevant IEC/UL standards (typically IEC 60947) Degree of Protection IP20 (relay body) Operating Temperature -20°C to 60°C Storage Temperature -30°C to 80°C Dimensions (W x H x D) Compact size (approx. 40 x 90 x 100 mm, verify with exact datasheet) Weight Approximately 0.15 - 0.2 kg Terminal Wiring Screw clamp terminals for solid/stranded wires