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1SDA038324R1

The ABB 1SDA038324R1 is a low-voltage, split-core, wrapping-type current transformer (CT) designed for retrofit installation and energy measurement in existing low-voltage switchgear and distribution boards without the need to disconnect the primary conductor.

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Technical Specifications Parameter Category Specification Product Type Split-Core (Wrapping-Type) Current Transformer Standard IEC 61869-2 (Measuring Transformers) Rated Primary Current (Ipn) 300 A Rated Secondary Current (Isn) 1 A or 5 A (The exact secondary current is a key variant. This code likely specifies one, with R1 potentially indicating 1A. The product label will confirm.) Accuracy Class Typically Class 1 or Class 0.5 for measurement. Common for this type is 1.0 (1%). Rated Output (VA) Commonly 2.5 VA or 5 VA at the specified accuracy class. Accuracy Limit Factor (ALF) Typically 5 (for measurement purposes, not protection). Frequency 50/60 Hz Rated Insulation Voltage 0.72 / 3 kV (Category III, for installation on systems up to 1000V AC). Core Construction Split-core, with a secure latching or screw-clamping mechanism. Window Diameter / Size A key physical parameter determining the maximum conductor size it can accommodate. Common sizes are Ø50mm, Ø65mm, or rectangular openings (e.g., 80x30mm). Mounting Can be mounted via integrated lugs, DIN rail clip (optional), or simply secured around the conductor. Connections Secondary terminals are typically screw-type for secure connection of measurement wires. Ambient Temperature -25°C to +70°C (Operating) Safety Standard Designed for connection to secondary circuits which are normally earthed. The secondary must NEVER be left open-circuited under load. Typical Use Connecting to: • Multi-function energy meters (e.g., ABB B23, B24 series) • Power quality analyzers • Building Management System (BMS) inputs • SCADA system transducers