Key Specifications Parameter Value Brand Schneider Electric Series 3CT Product Type Current Transformer (Split-Core / Hinged Type) Model / Reference 3CT-HH-150-C Primary Current (Ip) 150 A Secondary Current (Is) 5 A (typical - verify with datasheet) Accuracy Class Class 1 or Class 0.5 (typical for monitoring applications) Rated Burden Typically 2.5 VA or 5 VA (verify with datasheet) Design Type Split-core (Hinged) for easy installation without disconnecting primary conductors Window Size Standard size for 150A rating (typically 20-25mm diameter) Frequency 50/60 Hz Insulation Level 0.72/3 kV (typical) Rated Voltage Up to 720V AC Insulation Material Flame-retardant thermoplastic (UL94 V-0 rated) Safety Factor (FS) FS < 5 (typical for protection applications) Thermal Rating (Ith) 1.2 x In (continuous), 60 x In (1 second) Dielectric Withstand 3 kV / 1 minute (between primary and secondary) Standards IEC 61869-2, IEC 60044-1, UL (where applicable) Degree of Protection IP20 (body) Operating Temperature -25°C to 50°C Storage Temperature -40°C to 70°C Mounting Panel mount / Busbar mount / Cable mount Terminal Type Screw terminals for secondary connections Primary Conductor Busbar or cable (through window) Weight Approximately 0.3 - 0.5 kg (depending on construction) Color Typically gray or black