The HPS High Power Precision 4-terminal shunt resistor series by RARA stands out as a reliable solution for engineers seeking precision in high-power applications. Engineered with a 4-terminal design, it operates within a temperature range of -55°C up to 100°C. This series offers a substantial power rating of up to 250W, achievable on a suitable heat sink, with a maximum current limit of 387A at a resistance value of 1mΩ.

Available resistance values range from 0.001Ω to 0.1Ω, providing flexibility for various applications. Tolerance options are as low as ±0.05%, ensuring accuracy, and the maximum Temperature Coefficient of Resistance (TCR) is ±5 ppm/°C. Notably, the HPS series exhibits exceptional short-term stability (≤±0.02%) at maximum current load for 1 hour and a long-term stability of ≤±0.2% after 1,000 hours.

This precision shunt resistor is designed for high-current sensing and reference resistors in laboratories, charge/discharge test equipment for high-capacity batteries, and current sources and laboratory power supplies. With forced cooling capabilities and excellent stability, it addresses the demands of critical applications with precision and efficiency.

For engineers in search of an alternative to the Isabellenhütte RUG-Z, the HPS series stands as a robust and reliable choice.