TK30N5005203 CURRENT TRANSFORMER 500/5A, 2.5 VA, CL 0.5, 30mm
The TK30N5005203 (TK 30N Series) is a precision low-voltage measuring current transformer engineered for high-accuracy power metering and energy management applications. Featuring a 500/5A transformation ratio, it steps down 500A primary AC currents to a standard 5A secondary output with Class 0.5 precision and a 2.5VA rated burden capacity. Housed in a flame-retardant, self-extinguishing polycarbonate casing with a 30mm aperture (designed for $30 \times 10\text{ mm}$ busbars or round insulated cables), this CT provides excellent insulation, thermal stability, and vibration resistance for industrial switchboards and control cabinets.
Specification | Technical Value |
|---|---|
Part / Model Number | TK30N5005203 (TK 30N Series) |
Product Type | Low Voltage Busbar / Ring Current Transformer |
Primary Rated Current ($I_{pn}$) | 500A AC |
Secondary Rated Current ($I_{sn}$) | 5A AC |
Current Transformation Ratio | 500/5 A |
Accuracy Class | Class 0.5 (Cl. 0.5 Precision Metering) |
Rated Burden Power Capacity | 2.5 VA |
Internal Aperture Dimensions | 30 \text{ mm} Diameter / 30 \times 10 \text{ mm} Busbar Window |
Operating Frequency | 50 / 60 Hz |
Max System Operating Voltage ($U_m$) | 0.72 kV (720V Maximum Operating Voltage) |
Test / Isolation Voltage | 3 kV AC for 1 minute |
Rated Short-Time Thermal Current ($I_{th}$) | 60 \times I_{pn} for 1 second |
Continuous Overload Capacity | 1.2 \times I_{pn} |
Housing Material | Self-Extinguishing Polycarbonate / ABS Plastic |
Flammability Rating | UL94 V-0 |
Secondary Connection | Screw Clamp Terminals with Integrated Sealable Cover |
Mounting Options | Busbar Clamping / Base Mounting Feet / DIN Rail Adapter Clip |
Operating Temperature | -25°C to +55°C |
Compliance & Standards | IEC 61869-2, IEC 60044-1, CE |
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