Parameters Category Parameter Specification for OT630E03P General Type Self-Powered Electromechanical Induction Disk Relay Standard Function Inverse Definite Minimum Time (IDMT) Phase Overcurrent (ANSI 51, IEC 51) Auxiliary Supply Not Required (Powered from CT secondary circuit) Input Circuit Rated Frequency 50 Hz or 60 Hz (as ordered) Thermal Rating (Continuous) Typically 10 A (CT Secondary) Burden (@ Rated Current) Approx. 3.0 to 8.0 VA (Higher than OT400, varies with plug setting) Saturation Withstands high transient currents without damage. Settings Plug Setting (PS) / Tap Range Typically 0.5 - 2.0 A or 2.0 - 8.0 A in 0.1A or 0.25A steps (e.g., 0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0 A). Represents 50% to 200% of CT secondary. Time Multiplier Setting (TMS) Adjustable, typically 0.1 to 1.0 (or 0.05 to 1.0) Time-Current Characteristic ("03") Specific Curve: e.g., Normal Inverse, Very Inverse, Long-Time Inverse. Must be confirmed from manufacturer tables for code "03". Output Contacts Contact Configuration DTL (Dynamically Trip-Locked): One NO trip contact that latches mechanically, plus one NC alarm contact. Contact Rating Trip Contact: Make & Carry: 30 A for 3s; Break: 0.2 A at 250 V DC (inductive). Alarm Contact: 5 A continuous. Mechanical Operation Indicator Two mechanical flags: Red for trip operation (latched), Yellow for disk start indication. Reset Manual push-button to reset the tripping mechanism and red flag. Case Flush-mounted, draw-out case for easy testing without disconnecting wiring. Mounting Panel Mounting Accuracy Operating Time Within ±10% of the theoretical curve value at TMS=1.0. Reset Time Typically < 10 seconds (for 90% reset) Environmental Operating Temperature -25°C to +55°C Vibration & Shock Designed for severe switchgear environments. Standards Compliance IEC 60255-3, ANSI/IEEE C37.90